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CAS No. : | 100361-18-0 | MDL No. : | MFCD08458865 |
Formula : | C12H8ClFN2O3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | OXNZWNNMJBOZQO-UHFFFAOYSA-N |
M.W : | 282.65 | Pubchem ID : | 11055142 |
Synonyms : |
|
Num. heavy atoms : | 19 |
Num. arom. heavy atoms : | 10 |
Fraction Csp3 : | 0.25 |
Num. rotatable bonds : | 2 |
Num. H-bond acceptors : | 5.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 66.69 |
TPSA : | 72.19 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | Yes |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -5.59 cm/s |
Log Po/w (iLOGP) : | 1.6 |
Log Po/w (XLOGP3) : | 3.43 |
Log Po/w (WLOGP) : | 2.58 |
Log Po/w (MLOGP) : | 1.77 |
Log Po/w (SILICOS-IT) : | 2.38 |
Consensus Log Po/w : | 2.35 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 0.0 |
Bioavailability Score : | 0.56 |
Log S (ESOL) : | -4.01 |
Solubility : | 0.0276 mg/ml ; 0.0000975 mol/l |
Class : | Moderately soluble |
Log S (Ali) : | -4.63 |
Solubility : | 0.00668 mg/ml ; 0.0000236 mol/l |
Class : | Moderately soluble |
Log S (SILICOS-IT) : | -3.27 |
Solubility : | 0.15 mg/ml ; 0.000531 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 1.0 alert |
Leadlikeness : | 0.0 |
Synthetic accessibility : | 2.09 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
78% | With hydrogenchloride; water In tetrahydrofuran for 2 h; Reflux; Inert atmosphere | To a solution of ethyl 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-1,8-naphtyridine-3-carboxylate (0.1g, 0.32 mmol) in THF (5 ml) was added conc.HCl (45 μL, 0.7 mmol). The reaction mixture was heated to reflux for 2 h. After completion of the reaction by TLC, reaction mixture was cooled to room temperature. The solid precipitated was filtered to give the title compound as a solid (70 mg, 78percent). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
78.8% | With triethylamine; In water; acetonitrile; at 15 - 25℃; for 23.25h; | Triethylamine (34ml) was added to 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid (20.17g) in a mixture of acetonitrile (100ml) and water (100ml) at 15-20C and the mixture stirred for 30 min. 4-Aminomethyl-3-methoxyiminopyrrolidinium dihydrochloride (18.9g) was added, followed by water (5ml), and the mixture stirred at 20-25C for 23? hours. The resulting product was filtered and the cake washed with ice-cold 1:2 acetonitrile:water (100ml) followed by acetonitrile (100ml), air dried, then dried under vacuum, at ambient temperature, to give the title compound as a fawn solid (26g). (94% as is, 78.8% on assay). Characterising data were consistent with a standard sample of the title compound. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% | With triethylamine; In water; at 15 - 25℃; for 17.75h; | Triethylamine (5.1 ml) was added to 7-chloro- 1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid (3.05g) in water (25ml) at 15-20C and the mixture stirred for 20 min. 4-Aminomethyl-3-methoxyimino-pyrrolidinium dimethanesulfonate (3.86g) was added, followed by water (5ml), and the mixture stirred at 20-25C for 17? hours. The resulting product was filtered and the cake washed with water (30ml) followed by ethanol (30ml) and dried under vacuum at 50C to give the title compound as a white solid (4.23g). (102% as is, 86% on assay). Characterising data were consistent with a standard sample of the title compound. |
With tetra(n-butyl)ammonium hydroxide; In water; at 20 - 25℃; for 24h; | A 40% solution of tetrabutylammonium hydroxide in water (15 ml, 23 mmol) was added to a mixture of 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid (2.5 g, 8.8 mmol) and 4-amino-methyl-3-methoxyiminopyrrolidinium dimethanesulfonate (3.12 g, 9.3 mmol) in water (8 ml) at 20 - 25C and the mixture stirred for 24 hours. The resulting product was filtered and the cake washed with water (25 ml) followed by ethanol (25 ml) and dried under vacuum at 50C to give the title compound as a white solid (3.47 g). Characterising data were consistent with a standard sample of the title compound. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In water; at 20 - 25℃; for 18h; | Triethylamine (5.1 LLLT) was added to 7-CHLORO-1-CYCLOPROPYL-6-FLUORO-4-OXO-1, 4- DIHYDRO-1, 8-naphthyridine-3-carboxylic acid (3.05 g) in water (25 MNo.) at 15-20 C, and the mixture was stirred for 20 minutes. Compound (I) (3.86 g) prepared in Example 1 and water (5 N) were added, and this mixture was stirred at 20-25 C for 18 hours. The product thus obtained was filtered, and the filter cake was washed with water (30 UP.) and ethanol (30 INL),). Drying at 50 C under vacuum gave the title compound (4.23 g) as a white solid. The identification data were the same as those of the authentic sample. | |
EXAMPLE 3 Synthesis of (R,S)-7-(3-Aminomethyl-4-syn-methoxyimino-pyrrolidin-1-yl)-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic Acid triethylamine (5.1 ml) was added to 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid (3.05 g) in water (25 ml) at 15-20 C. and the mixture stirred for 20 min. 4-Aminomethyl-3-methoxyimino-pyrrolidinium dimethanesulfonate (3.86 g) was added, followed by water (5 ml), and the mixture stirred at 20-25 C. for 173/4 hours.. The resulting product was filtered and the cake washed with water (30 ml) followed by ethanol (30 ml) and dried under vacuum at 50 C. to give the title compound as a white solid (4.23 g).. (102% as is, 86% on assay).. Characterising data were consistent with a standard sample of the title compound. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In acetonitrile;Heating / reflux; | -CHLORO-1-CYCLOPROPYL- 6-fluoro-4-oxo-1, 4-dihydronaphthyridine-3-carboxylic acid (57 mg, 0.2016 MMOL), amine 128 (R5 = F) (67 mg, 0. 2389 MMOL) and triethylamine (0.5 mL) in ACETONITRILE (10 mL) were heated at reflux temperature overnight. After cooling, the volatiles were evaporated and the residue suspended in water (25 mL). The resulting solid was collected by filtration and dried. Ethanol (5 mL) was added to the solid followed by hydrazine (0.01 mL, 0.3138 MMOL). The reaction mixture was heated at reflux temperature for 1 hour after which the volatiles were evaporated. Water (15 mL) was added to the residue and the resulting solid collected by filtration, washed with additional water and dried to afford 87 (49.1 mg, 69%) as an off-white powder. MS 363 (M + H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87% | With triethylamine; In acetonitrile; for 24.0833h;Heating / reflux; | A solution of amine 135 (0.48 MMOL) and triethylamine (0.28 mL, 2.0 MMOL) in acetonitrile (7 mL) was treated with 7-CHLORO-1-CYCLOPROPYL-6-FLUORO-4-OXO-1, 4- DIHYDRO- [1, 8] naphthyridine-3-carboxylic acid (113 mg, 0.40 MMOL) under nitrogen. After 5 min, the reaction mixture was warmed to reflux temperature and the reaction mixture was allowed to stir for 24h. The resulting mixture was allowed to cool to room temperature, concentrated in vacuo and the residue was diluted with water. The product was collected by filtration, and then washed with water and a small amount of methanol to afford the title compound (178 mg, 87%) as a white solid. MS 511 (M+H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In acetonitrile; for 12h; | A SOLUTION OF AMINE 31 (612 MG, 1.57 MMOL) and triethylamine (0.7 mL, 5.0 MMOL) in ACETONITRILE (4 mL) was treated with 7-CHLORO-1-CYCLOPROPYL-6-FLUORO-4-OXO-1, 4-dihydro-naphthpyridine- 3-carboxylic acid (222 mg, 0.787 MMOL) under nitrogen and the reaction mixture was allowed to stir for 12 h. The resulting mixture was concentrated in vacuo, and the residue was washed with water (3 X 10 mL). The residue was allowed to dry for 15 min. The solid was collected, resuspended in methanol (5 mL) and the reaction mixture was treated with hydrazine (1 mL). After 5 min, the reaction mixture was warmed to reflux and the resulting mixture was allowed to stir for 1 h. The reaction mixture was concentrated in vacuo, diluted with water and the solids were collected by filtration. The off white product was washed with water (3 x 20 mL), allowed to dry overnight to afford the title compound 1 (40.4 mg, 13%). MS 391 (M+H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
40% | With triethylamine; In acetonitrile; for 16h; | 7-F4- (2-HVDROXVETHYLIDENE) PIPERIDIN-1-YLL-1-CVCLOPROPVL-6-FLUORO-4-OXO-1, 4- DIHVDRONAPHTHYRIDINE-3-CARBOXVIIC acid (163) A solution of amine 103 (256 mg, 1.06 MMOL) and triethylamine (0.5 mL, 3.55 MMOL) in ACETONITRILE (4 mL) was treated with 7-CHLORO-1-CYCLOPROPYL-6-FLUORO-4-OXO-1, 4-dihydro-naphthyridine-3- carboxylic acid (200 mg, 0.71 MMOL) under nitrogen and the reaction mixture was allowed to stir for 16 h. The resulting mixture was concentrated in vacuo, and the residue was washed with water (3 x 10 mL) and allowed to dry overnight to afford the title compound 163 (105 mg, 40%). MS 374 (M+H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
62% | With triethylamine; In acetonitrile; at 80℃; for 17h; | To a solutionof 3-amino-3-pyrrolidin-3-yl-propionitrile (200 mg, 1.44 mmol) and7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1, 4-dihydro-[l,8] naphthyridine-3-carboxylic acid(282 mg, 1.00 mmol) in acetonitrile (10mL) was added triethylamine (505 mg, 5.00 mmol) and the solution was heated at 80 C for 17 hours. The precipitate was collected by vacuum filtration and rinsed with acetonitrile. The solid was dried overnight at 45 C under vacuum to give 240 mg of the title compound (yield: 62%). MS (APCI+):mAz 386 (M+H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
77.6% | With triethylamine; In acetonitrile; at 45 - 50℃; for 4h; | The compound obtained from the preparation example 10 (4.44 g), 1-cyclopropyl-6-fluoro-7-chloro-4-oxo-1,4-dihydro[1,8] naphthyridine-3-carboxylic acid (3.45 g), and triethylamine (2.6 in,) were added to acetonitrile (50 ml) in order and the reaction mixture was sitirred at 4550 C. for 4 hr. The precipitate was filtered and dried to obtain the desired compound (5.31 g, 77.6%). [00102] 1H-NMR(CDCl3, ppm) 0.80 (3H, s), 1.07 (2H, bs), 1.17 (3H, s), 1.24 (5H, bs), 1.26 (2H, bs), 1.41 (9H, s), 3.40 (2H, bs), 3.553.60 (5H, m), 4.054.32 (4H, m), 5.07 (1H, bs), 8.03 (1H, d, J=12.4 Hz), 8.71 (1H, s); [alpha]D=+9.77 (c=1.19, CHCl3, 25.0 C.). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In acetonitrile; at 0 - 20℃; | Acetonitrile (1900ml), 3-aminomethyl-4-methoxyiminopyrrolidine dimethanesulfonate (248. Og) and water (100ml) were in turn introduced into a reaction vessel and cooled to 0- 5° C. Benzaldehyde (97.6g) and triethylamine (229. 1g) were in turn added to the reaction mixture. After stirring the mixture for 0. 5h, 7-chloro-1-cyclopropyl-6-fluoro-1, 4- dihydro-4-oxo-1, 8-naphthyridine-3-carboxylic acid (200. 0g) was introduced thereto. The resultant reaction mixture was slowly heated to room temperature, while stirring it. Then, the reaction was carried out by stirring the reaction mixture for about 3h at room temperature. The reaction material, which was formed in the form of a dispersion solution upon producing the title compound, was filtered, washed with water and acetonitrile, and then dried to prepare 320.3 g of the title compound (Yield: 94. 8%).'H NMR (6, CDC13) : 8.66 (s, 1H), 8. 32 (s, 1H), 7. 98 (d, J=12. 4Hz, 1H), 7.60 (d, J=7. 0Hz, 2H), 7. 37 (t, J=7.4Hz, 1H), 7.31 (t, J=7.4Hz, 2H), 4. 58 (s, 2H), 4. 21-4. 15 (m, 2H), 4.00 (m, 1H), 3.93 (s, 3H), 3.83 (m, 1H), 3.56 (m, 1H), 3.40 (m, 1H), 1.21 (m, 2H), 1.00 (m, 2H) Mass (FAB): 478 (M+H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In acetonitrile; at 20℃; for 15h; | Acetonitrile (100ml), 3-aminomethyl-4-methoxyiminopyrrolidine dimethanesulfonate (12. 5g), 2-chlorobenzaldehyde (lO. Og) and triethylamine (12.2g) were in turn introduced into a reaction vessel at room temperature. After stirring the mixture for about 0. 5h, 7- chloro-1-cyclopropyl-6-fluoro-1, 4-dihydro-4-oxo-1, 8- naphthyridine-3-carboxylic acid (10. Og) was introduced thereto. The resultant reaction mixture was stirred for about 15h at room temperature, cooled to 0~5°C, and stirred for about 3h. The title compound in the form of solid was filtered, washed with acetonitrile, and dried to prepare 16.3g of the title compound (Yield: 90.0%). 'H NMR (o, CDC13) : 8.74 (s, 1H), 8.66 (s, 1H), 7.96 (d, J=12. 4Hz, 1H), 7.84 (d, J=7. 3Hz, 1H), 7.29 (m, 2H), 7.16 (m, 1H), 4.59 (bs, 2H), 4.18 (m, 2H), 4.02 (m, 1H), 3.94 (s, 3H), 3.93 (m, 1H), 3.59 (m, 1H), 3.42 (m, 1H), 1.22 (m, 2H), 1.01 (m, 2H) Mass (FAB): 512 (M+H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In acetonitrile; at 20℃; for 15h; | Acetonitrile (100ml), 3-aminomethyl-4-methoxyiminopyrrolidine dimethanesulfonate (12. 5g), 2-hydroxybenzaldehyde (8.6g) and triethylamine (12.2g) were in turn introduced into a reaction vessel at room temperature. After stirring the mixture for about 0. 5h, 7- chloro-1-cyclopropyl-6-fluoro-1, 4-dihydro-4-oxo-1, 8- naphthyridine-3-carboxylic acid (lO. Og) was introduced thereto. The resultant reaction mixture was stirred for about 15h at room temperature, cooled to O~ 5 C, and stirred for about 3h. The title compound in the form of solid was filtered, washed with acetonitrile, and dried to prepare 16.0 g of the title compound (Yield: 91. 8%). 'H NMR (6, CDC13) : 8. 68 (s, 1H), 8.42 (s, 1H), 8.01 (d, J=12.4Hz, 1H), 7. 30-7. 20 (m, 3H), 6. 90-6. 82 (m, 2H), 4. 68-4. 53 (m, 2H), 4. 32-4. 24 (m, 1H), 4.06 (dd, J1=11. 9Hz, J2=5. 5Hz, 1H), 4. 02-3. 85 (m, 3H), 3.95 (s, 3H), 3.60 (m, 1H), 3.40 (m, 1H), 1. 29-1. 21 (m, 2H), 1. 07-1. 00 (m, 2H) Mass (FAB): 494 (M+H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In ethanol; acetonitrile; at 0 - 20℃; | Acetonitrile (100ml), 3-aminomethyl-4-methoxyiminopyrrolydine dimethanesulfonate (12. 5g) and 1-naphthaldehyde (11. lg) were in turn introduced into a reaction vessel at room temperature and cooled to 0~5 C. Triethylamine (12.2g) was dropwise added to the reaction mixture. After stirring the mixture for about 0. 5h, the reaction mixture was diluted by adding ethanol (30ml). 7-Chloro-l-cyclopropyl-6-fluoro-1, 4-dihydro-4-oxo- 1, 8-naphthyridine-3-carboxylic acid (lO. Og) was introduced to the reaction mixture. After raising slowly the reaction temperature to room temperature, the reaction mixture was stirred for about 15h. The title compound in the form of solid was filtered, washed with water and ethanol, and dried to prepare 15.7 g of the title compound (Yield: 84. 4%). 1H NMR (o, CDCl3) : 8.86 (m, 2H), 8.55 (s, 1H), 7. 82 (m, 3H), 7.73 (m, 1H), 7.40 (m, 3H), 4.60 (m, 2H), 4.24 (m, 2H), 4.08 (m, 1H), 3.99 (m, 1H), 3.95 (s, 3H), 3.45 (m, 2H), 1.13 (m, 2H), 0. 89 (m, 2H) Mass (FAB): 528 (M+H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | In water; acetonitrile; | REFERENCE EXAMPLE 2 Synthesis of 7-(3-aminomethyl-4-methoxyimino-pyrrolidin-1-yl)-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro[1,8]-naphthyridine-carboxylic acid (9) 141 mg (0.5 mmole) of 1-cyclopropyl-7-chloro-6-fluoro-4-oxo-1,4-dihydro[1,8]naphthyridine-3-carboxylic acid and 108 mg (0.5 mmole) of 3-aminomethylpyrrolidin-4-one O-methyloxime dihydrochloride were added to 2.5 ml of dry acetonitrile. Then, 230 mg (1.5 mmol) of 1,8-diazabicyclo[5.4.0]undec-7-ene was slowly added dropwise thereto and the mixture was heated for 0.5 hour and then cooled down to room temperature. 1 ml of distilled water was added to the reaction solution. The precipitated solid was separated and dried to obtain 167 mg (Yield: 85%) of the title compound. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
93.9% | In acetonitrile; | PREPARATION 11 7-[2-(t-butoxycarbonyl)-8-(methoxyimino)-2,6-diazaspiro[3,4]oct-6-yl]-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro[1,8]naphthyridine-3-carboxylic acid. 400 mg of 1-cyclopropyl-6-fluoro-7-chloro-4-oxo-1,4-dihydro[1,8]naphthyridine-3-carboxylic acid and 84 g of t-butyl 8-(methoxyimino)-2,6diazaspiro[3,4]octane-2-carboxylate were added to 10 ml of acetonitrile and the resulting mixture was stirred for 3 hours at 45-50 C. Then the precipitated solid was filtered and dried to give 650 mg of the titled compound(yield: 93.9%). m.p.: 278-279 C. 1H-NMR(CDCl3, ppm): 1.05(m, 2H), 1.27(m, 2H), 1.45(s, 9H), 3.61~3.67(m, 1H), 3.90(s, 3H), 3.94(s, 2H), 4.25(s, 2H), 4.27(s, 2H), 4.56(s, 2H), 8.04(d, 1H, J=11.71 Hz), 8.68(s,1H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N-ethyl-N,N-diisopropylamine; In acetonitrile; | Example 6 7-[3-[3-(Aminomethyl)phenyl]-1-pyrrolidinyl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid A suspension of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> (0.85 g, 3.0 mmol), 1,1-dimethyl[[3-(3-pyrrolidinyl)-phenyl]methyl]carbamate (1.00 g, 3.6 mmol), and diisopropylethylamine (1.55 g, 12.0 mmol) in acetonitrile (50 mL) was heated at gentle reflux for 23 hours. The suspension was allowed to cool to room temperature; the precipitated solids were filtered, washed with cold methanol, ether, and dried in vacuo at 40 C. to give 1 cyclopropyl-7-[3-[3-[[(1,1-dimethylethoxy)carbonyl]amino]phenyl]-1-pyrrolidinyl]-6-fluoro 1,4-dihydro-4-oxo 1,8-naphthyridine-3-carboxylic acid (1.33 g, 85%) as an off-white solid, mp 210-211 C. 1 H-NMR (250 MHz, d6 DMSC +heat): delta=1.02-1.19 (4H, m), 1.38 (9H, s), 2.03-2.20 (1H, m), 2.32-2.43 (1H, m), 3.42-3.98 (4H, m), 4.02-4.19 (3H, m), 4.21-4.36 (1H, m], 7.13 (1H, d, J=7.1 Hz), 7.22-7.41 (4H, m), 7.95 (1H, d, J=12.6 Hz), 8.54 (1H, s), 15.40 (1H, br.s). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
43% | With N-ethyl-N,N-diisopropylamine; In acetonitrile; | Example 1 7-[3-[2-(Aminomethyl)phenyl]-1-pyrrolidinyl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid A suspension of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> (1.13 g, 4.0 mmol), 2-(3-pyrrolidinyl)benzenemethanamine (1.25 g, 5.0 mmol), and a diisopropylethylamine (2.07 g, 16.0 mmol) in acetonitrile (50 mL) was heated at gentle reflux for 24 hours. The suspension was allowed to cool to room temperature; the precipitated solids were filtered, washed successively with cold acetonitrile and ether, and dried in vacuo to give the title compound (0.73 g, 43%) as a white solid, after recrystallization from methanol, mp 226-228 C. 1 H-NMR (250 MHz, TFA): delta=1.21-1.38 (2H, m), 1.42-1.62 (2H, m), 2.28-2.48 (1H, m), 2.50-2.76 (1H, m), 3.90-4.19 (4H, m), 4.30-4.79 (2H, m), 4.65 (2H, br. s), 7.41-7.62 (4H, m), 8.11 (1H, d, J=11.6 Hz), 9,16 (1H, s), 11.60 (1H, br. s). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | Example 16 1-Cyclopropyl-6-fluoro-1,4 dihydro-4-oxo-7-[3-(2-pyridinyl)-1-pyrrolidinyl]-1,8-naphthyridine-3-carboxylic acid Starting from 7-chloro 1-cyclopropyl-6-fluoro-1,4 dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid (1.33 g, 4.7 mmol) and 2-(3 pyrrolidinyl)pyridine, a procedure analogous to that given in Example 1 provided the title compound (1.64 g, 88%) as an off-white solid, mp 203-204 C. 1 H-NMR (250 MHz, TFA): delta=1.22-1 38 (2H, m), 1.42-1.60 (2H, m), 2.47-2.73 (1H, m), 2.82-3.00 (1H, m), 4.01-4.64 (5H, m), 4.70-5.00 (1H, m), 8.05-8.28 (3H, m), 8.72 (1H, dist. t, J=7.9 Hz), 8.84 (1H, br. d, J=5.5 Hz), 9.20 (1H, s), 11.71 (1H, br. s). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
82% | Example 20 1-Cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-[3-(3-pyridinyl)-1-pyrrolidinyl]-1,8-naphthyridine-3-carboxylic acid Starting from <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> (1.24 g, 4.4 mmol) and 3-(3-pyrrolidinyl)pyridine, a procedure analogous to that given in Example 1 provided the title compound (1.43 g, 82%) as a light beige solid, mp 226-228 C. 1 H-NMR (250 MHz, TFA): delta=1.20-1.38 (2H, m), 1.42-1.60 (2H, m), 2.36-2.60 (1H, m), 2.74-2.90 (1H, m), 3.95-4.90 (6H, m), 8.09-8.22 (2H, m), 8.76 (1H, d, J=8.3 Hz), 8.82 (1H, d, J=5.8 Hz), 8.97 (1H, s), 9.17 (1H, s), 11.62 (1H, br. s). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
67% | Example 23 1-Cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-[3-(4-pyridinyl)-1-pyrrolidinyl]-1,8-naphthyridine-3-carboxylic acid Starting from 7-chloro-1-cyclopropyl-6-fluoro-1,4 dihydro-4-oxo 1,8-naphthyridine 3-carboxylic acid (0.85 g, 3.0 mmol) and 4-(3-pyrrolidinyl)pyridine, a procedure analogous to that given in Example 1 provided the title compound (0.79 g, 67%), mp 223-225 C. 1 H-NMR (300 MHz, TFA): delta=1.03-1.12 (2H, m), 1.13-1.24 (2H, m), 2.18-2.28 (1H, m), 2.47-2.60 (1H, m), 3.62-3.76 (1H, m), 3.84-4.00 (3H, m), 4.05 4.18 (1H, m), 4.36-4.44 (1H, m), 8.02 (1H, d, J=12.5 Hz), 8.14 (2H, d, J=5.7 Hz), 8.59 (1H, s), 8.92 (2H, d, J=5.7 Hz), 12.12 (1H, br. s). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
4-6-(Cyclopropylamino)-3-fluoro-2-pyridinyl]-1-piperazinecarboxylic Acid, Ethyl Ester A solution of 21.9 g (63 mmole) of 4-[6-(acetylcyclopropylamino)-3-fluoro-2-pyridinyl]-1 -piperazine-carboxylic acid, ethyl ester, 170 mL of 15% hydrochloric acid and 235 mL of methanol was refluxed for one hour and allowed to stir at room temperature for 18 hours The methanol was removed in vacuo and the aqueous acid was made basic with 1.0N sodium hydroxide to pH 10.5. The mixture was extracted with chloroform, the chloroform layer washed with water, dried over magnesium sulfate, and evaporated in vacuo to give 17.6 g of the title compound, mp 68-70 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; triethylamine; In ethanol; water; acetonitrile; | EXAMPLE 16 7-[3-(1-Aminoethyl)-1-pvrrolidinyl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8 -naphthyridine-3-carboxylic Acid Isomer B 7-Chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4 -oxo-1,8-naphthyridine-3-carboxylic acid (0.45 g, 0.0016 mole), 3-[1-(N-tert-butoxycarbonylamino)ethyl]-pyrrolidine isomer B (0.45 g, 0.002 mole) and triethylamine (0.8 mL, 0.006 mole) in acetonitrile (20 mL) were stirred at room temperature under nitrogen two hours and then heated at reflux 16 hours. The reaction was cooled to room temperature and the solvent removed under reduced pressure to give 1.19 g gold semisolid, which was carried on as is in the next step. 7-[3-(1-[N-tert-butoxycarbonylamino]ethyl)-1-pyrrolidinyl]-1-cyclopropyl-6-fluoro-1,4 -dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid isomer B (0.74 g, 0.0016 mole) in ethanol (35 mL)/1N HCl (14 mL) was heated at 90 for two hours. The reaction was cooled to room temperature and the solvent was removed under reduced pressure. The residue was treated with isopropyl alcohol twice and the solvent was removed under reduced pressure. The solid was dried in an oven under vacuum at 70 for 60 hours. The solid was then stirred up in water, filtered, and the filtrate was placed on a freeze drying apparatus for 16 hours. 7-[3-(1-aminoethyl)-1-pyrrolidinyl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8 -naphthyridine-3-carboxylic acid isomer B was obtained (0.63 g, 80%) as a pale yellow solid, mp 281-284 (dec). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1.3 g (84%) | In acetonitrile; | EXAMPLE 13 7-[3-[(2-Propylamino)methyl]-1-pyrrolidinyl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4 -oxo-1,8-naphthyridine-3-carboxylic Acid A suspension of 1.13 g (3.0 mmole) of 7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8 -naphthyridine-3-carboxylic acid, 0.63 g (4.4 mmole) of 3-[(2-propyl)aminomethyl]pyrrolidine, 1.22 g (8.0 mmole) of 1,8-diazabicyclo[5.4.0]undec-7-ene and 30 mL of acetonitrile was stirred at room temperature for two hours. The precipitate was removed by filtration, washed with acetonitrile, and dried in vacuo to give 1.3 g (84%) of the title compound, mp 240-243 C. |
1.3 g (84%) | In acetonitrile; | EXAMPLE 57 7-[3-[(2-Propylamino)methyl]-1-pyrrolidinyl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-napthyridine-3-carboxylic Acid A suspension of 1.13 g (3.0 mmole) of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong>, 0.63 g (4.4 mmole) of 3-[(2-propyl)aminomethyl]pyrrolidine, 1.22 g (8.0 mmole) of 1,8-diazabicyclo[5.4.0]undec-7-ene and 30 ml of acetonitrile was stirred at room temperature for two hours. The precipitate was removed by filtration, washed with acetonitrile, and dried in vacuo to give 1.3 g (84%) of the title compound, mp 240-243 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; triethylamine; In ethanol; acetonitrile; | EXAMPLE 15 7-[3-(1-Aminoethyl)-1-pyrrolidinyl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8 -naphthyridine-3-carboxylic Acid Isomer A A mixture of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> (0.48 g, 0.0017 mole), 3-[1-(N-tert-butoxycarbonylamino)ethyl]pyrrolidine isomer A (0.49 g, 0.0021 mole) and triethylamine (0.85 mL, 0.006 mole) in acetonitrile (20 mL) was stirred at room temperature under nitrogen for 16 hours. After 30 minutes reaction had completely solidified. A white solid was filtered off, washed with acetonitrile, and carried on as is in the next step. 7-[3-(1-(N-tert-butoxycarbonylamino)ethyl)-1-pyrrolidinyl]-1-cyclopropyl-6-fluoro-1,4 -dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid isomer A (0.78 g, 0.0017 mole), preformed above, in ethanol (37 mL)/1N HCl (15 mL) was heated at 90 for 75 minutes. The reaction was cooled to room temperature and the solvent partially removed under reduced pressure. On standing a solid formed. This was filtered, washed with ethanol/diethyl ether, and then with diethyl ether and was dried in an oven under vacuum at 70 for two hours to give 7-[3-(1-aminoethyl)-1-pyrrolidinyl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8 -naphthyridine-3-carboxylic acid isomer A (0.40 g, 57%) as a white powder, mp 322-325 (dec). NMR delta (TFA) 9.11 (1H,s), 8.06 (1H,d), 4.28-4.59 (2H,m) 3.73-4.09 (4H,m), 2.79-2.87 (1H,m), 2.37-2.47 (1H,m) 1.61 (3H,d), 1.49-1.56 (2H,d), 1.23 (2H,m). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; sodium hydroxide; dimethyl sulfoxide; triethylamine; In diethyl ether; | EXAMPLE 13 (-)-7-(7-Amino-5-azaspiro[2,4]heptan-5-yl)-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid (compound 35b) 282.5 mg of 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid, 200 mg of compound 68b and 1 g of triethylamine were added to 6 ml of dimethyl sulfoxide. The mixture was stirred at 110 C. for 1 hour. The solvent was removed under reduced pressure and diethyl ether was added to the residue. The resulting precipitate was collected by filtration and 1N hydrochloric acid was added thereto. The mixture was washed with chloroform. The aqueous solution was made alkaline with 1N aqueous sodium hydroxide and rewashed with chloroform. This alkaline solution was then adjusted to pH 7.1 with concentrated hydrochloric acid under ice-cooling and the resulting colorless crystals were collected by filtration, washed with water, ethanol and ether, and dried. The crystals were then recrystallized from concentrated aqueous ammonia-ethanol to give 283 mg of title compound 35b as colorless fine needles. m.p.: 240-250 C. (decomp.) [alpha]D -13.6 (c=0.66, 1N NaOH). Elemental analysis, for C18 H19 N4 O3 F.1/4H2 O Calcd.: C; 59.58, H; 5.42, N; 15.44. Found: C; 59.68, H; 5.40, N; 15.36. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1.15 g (74%) | In acetonitrile; | EXAMPLE 14 7-[3-[(Propylamino)methyl]-1-pyrrolidinyl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1, 8,-naphthyridine-3-carboxylic Acid A suspension of 1.13 g (4.0 mmole) of 7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8 -naphthyridine-3-carboxylic acid, 0.63 g (4.4 mmole) of 3-[(propylamino]methyl]pyrrolidine, 1.22 g (8.0 mmole) of 1,8-diazabicyclo[5.4.0]undec-7-ene and 30 mL of acetonitrile was stirred at room temperature for 2.5 hours. The precipitate was removed by filtration, washed with acetonitrile and dried in vacuo to give 1.15 g (74%) of the title compound, mp 230-233 C. |
1.15 g (74%) | In acetonitrile; | EXAMPLE 58 7-[3-[(Propylamino)methyl]-1-pyrrolidinyl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic Acid A suspension of 1.13 g (4.0 mmole) of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong>, 0.63 g (4.4 mmole) of 3-[(propylamino]methyl]pyrrolidine, 1.22 g (8.0 mmole) of 1,8-diazabicyclo[5.4.0]undec-7-ene and 30 ml of acetonitrile was stirred at room temperature for 2.5 hours. The precipitate was removed by filtration, washed with acetonitrile and dried in vacuo to give 1.15 g (74%) of the title compound, mp 230-233 C. |
1.15 g (74%) | In acetonitrile; | EXAMPLE 58 7-[3-[(Propylamino)methyl]-1-pyrrolidinyl]-1-cyclopropyl-6fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic Acid A suspension of 1.13 g (4.0 mmole) of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong>, 0.63 g (4.4 mmole) of 3-[(propylamino]methyl]pyrrolidine, 1.22 g (8.0 mmole) of 1,8-diazabicyclo[5.4.0]undec-7-ene and 30 ml of acetonitrile was stirred at room temperature for 2.5 hours. The precipitate was removed by filtration, washed with acetonitrile and dried in vacuo to give 1.15 g (74%) of the title compound, mp 230-233 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In trichlorophosphate; | 7-Chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic Acid A suspension of 0.19 g (0.72 mmole) of 1-cyclopropyl-6-fluoro-1,4-dihydro-7-hydroxy-4-oxo-1,8 -naphthyridine-3-carboxylic acid in 2 mL of phosphorus oxychloride was heated at reflux for 1/2 hour. The resulting solution was cooled to room temperature and the solvent was removed in vacuo. The residue was triturated with ice-water and the resulting solid was removed by filtration, washed with water, then ether and dried in vacuo to give 0.11 g of the title compound, mp 209-212 C. | |
In trichlorophosphate; | 7-Chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid A suspension of 0.19 g (0.72 mmole) of 1-cyclopropyl-6-fluoro-1,4-dihydro-7-hydroxy-4-oxo-1,8-naphthyridine-3-carboxylic acid in 2 ml of phosphorus oxychloride was heated at reflux for 1/2 hour. The resulting solution was cooled to room temperature and the solvent was removed in vacuo. The residue was triturated with ice-water and the resulting solid was removed by filtration, washed with water, then ether and dried in vacuo to give 0.11 g of the title compound, mp 209-212 C. | |
In trichlorophosphate; | 7-Chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid A suspension of 0.19 g (0.72 mmole) of 1-cyclopropyl-6-fluoro-1,4-dihydro-7-hydroxy-4-oxo-1,8-naphthyridine-3-carboxylic acid in 2 ml of phosphorus oxychloride was heated at reflux for 1/2 hour. The resulting solution was cooled to room temperature and the solvent was removed in vacuo. The residue was triturated with ice-water and the resulting solid was removed by filtration, washed with water, then ether and dried in vacuo to give 0.11 g of the title compound, mp 209-212 C. |
In trichlorophosphate; | 7-Chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid A suspension of 0.19 g (0.72 mmole) of 1-cyclopropyl-6-fluoro-1,4-dihydro-7-hydroxy-4-oxo-1,8-naphthyridine-3-carboxylic acid in 2 ml of phosphorus oxychloride was heated at reflux for 1/2 hour. The resulting solution was cooled to room temperature and the solvent was removed in vacuo. The residue was triturated with ice-water and the resulting solid was removed by filtration, washed with water, then ether and dried in vacuo to give 0.11 g of the title compound, mp 209-212 C. | |
In trichlorophosphate; | 7-Chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic Acid A suspension of 0.19 g (0.72 mmole) of 1-cyclopropyl-6-fluoro-1,4-dihydro-7-hydroxy-4-oxo-1,8-naphthyridine-3-carboxylic acid in 2 ml of phosphorus oxychloride was heated at reflux for one-half hour. The resulting solution was cooled to room temperature and the solvent was removed in vacuo. The residue was triturated with ice water and the resulting solid was removed by filtration, washed with water, then ether, and dried in vacuo to give 0.11 g of the title compound, mp 209-212 C. | |
In trichlorophosphate; | 7-Chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid A suspension of 0.19 g (0.72 mmole) of 1-cyclopropyl-6-fluoro-1,4-dihydro-7-hydroxy-4-oxo-1,8-naphthyridine-3-carboxylic acid in 2 ml of phosphorus oxychloride was heated at reflux for 1/2 hour. The resulting solution was cooled to room temperature and the solvent was removed in vacuo. The residue was triturated with ice-water and the resulting solid was removed by filtration, washed with water, then ether and dried in vacuo to give 0.11 g of the title compound, mp 209-212C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In acetonitrile; | EXAMPLE Z6 STR94 1.4 g (5 mmol) of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> are stirred in 15 ml of acetonitrile together with 1.3 g (10.3 mmol) of (+)-[S,S]-2,8-diazabicyclo[4.3.0]nonane at room temperature for 1 hour with the exclusion of water. After standing overnight, the mixture is filtered with suction, and the sediment is washed with acetonitrile and, for purification, subjected to chromatography on silica gel (eluent: methylene chloride/methanol/17% strength aqueous ammonia 30:8:1; Rf value: 0.4). The resulting 1-cyclopropyl-7-([S,S]-diazabicyclo[4.3.0]non-8-yl)-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid is dissolved in 15 ml of half-concentrated hydrochloric acid and the solution is then evaporated and the residue stirred with ethanol. The precipitate is filtered off with suction, washed with ethanol and dried at 120 C./12 mbar. Yield: 960 mg (47% of theory) of 1-cyclopropyl-7-([S,S]-2,8-diazabicyclo[4.3.0]non-8-yl)-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid hydrochloride, Melting point: 345-346 C. (with decomposition), [alpha]D30: +5.4 (c=0.5, H2 O). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
77% | With 1,8-diazabicyclo[5.4.0]undec-7-ene; In water; acetonitrile; | EXAMPLE 7 7-([1alpha,5alpha,6beta]-6-Amino-1-methyl-3-azabicyclo[3.2.0]heptane-3-yl)-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid To a suspension of 100 mg of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> in 2 ml of acetonitrile were added 120 mg of DBU and 150 mg of [1alpha,5alpha,6beta]-6-amino-1-methyl-3-azabicyclo[3.2.0]heptane. The reaction mixture was heated under reflux for 2 hours and concentrated under reduced pressure. The residue was dissolved in 2 ml of water, neutralized with an aqueous 10% hydrochloric acid solution, and stirred at room temperature for an hour. The solids were collected by filtration, washed with water, and then dried to give 100 mg of the titled compound as pale-yellow solids (yield: 77%). m.p.: >270 C. 1 H-NMR(CDCl3) delta: 8.67(1H, s), 8.00(1H, d, J=12.7 Hz), 4.7-4.3(1H, m), 4.2-3.1(6H, m), 2.7-2.1(2H, m), 1.27(3H, s), 1.1-0.8(4H, m). |
With hydrogenchloride; 1,8-diazabicyclo[5.4.0]undec-7-ene; In methanol; ethanol; acetonitrile; | EXAMPLE 12 (+)-7-([1alpha,5alpha,6beta]-6-Amino-1-methyl-3-azabicyclo[3.2.0]heptane-3-yl)-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid To a suspension of 400 mg of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> in 10 ml of acetonitrile were added 320 mg of DBU and 300 mg of (-)-[1alpha,5alpha,6beta]-6-amino-1-methyl-3-azabicyclo[3.2.0]heptane. The reactio mixture was stirred at room temperature for 3 hours. The solids were collected by filtration, washed with a small amount of acetonitrile, and then dried to give 400 mg of the titled compound as white solids (yield: 76%). To a suspension of 400 mg of the titled compound thus obtained in 8 ml of methanol was added 1.2 ml of an aqueous 1N hydrochloric acid solution dropwise at room temperature, and the mixture was stirred continuously for an hour. The solids thus formed were collected by filtration under reduced pressure, washed with 5 ml of ethanol, and then dried to give 4.2 g of the titled compound, in the form of hydrochloride, as white solids (yield: 95%). m.p.:>270 C. [alpha]D20 +17.2 (C =0.5, 1N-NaOH). 1 H-NMR(CDCl3) delta: 8.67(1H, s), 8.00(1H, d, J=12.7 Hz), 4.7-4.3(1H, m), 4.2-3.1(6H, m), 2.7-2.1(2H, m), 1.27(3H, s), 1.1-0.8 (4H, m). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
69% | With hydrogenchloride; 1,8-diazabicyclo[5.4.0]undec-7-ene; In ethanol; acetonitrile; | EXAMPLE 51 7-([1alpha,6alpha,8beta]-8-Amino-3-azabicyclo[4.2.0]octane-3-yl)-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid, hydrochloride A mixture of 100 mg of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong>, 70 mg of [1alpha,6alpha,8beta]-8-amino-3-azabicyclo[4.2.0]octane and 30 mg of DBU in 5 ml of acetonitrile was stirred at 40 C. for 3 hours. The solvents were evaporated off under reduced pressure, and 4 ml of ethanol was then added thereto. To the resulting solution, 4-5 drops of concentrated hydrochloric acid were added to dissolve the residue completely. The solids thus precipitated were filtered under reduced pressure, washed with ethanol, and then dried to give 100 mg of the titled compound (yield: 69%). m.p.: 282-284 C. (decomp.). 1 H-NMR(DMSO-d6) delta: 8.59(1H, s),8.02(1H, d, J=13.7 Hz),4.90-3.10(6H, m), 3.10-1.40(4H, m). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
55% | With 1,8-diazabicyclo[5.4.0]undec-7-ene; In acetonitrile; | EXAMPLE 36 1-Cyclopropyl-7-([1alpha,5alpha,6beta]-6-amino-3-azabicyclo[3.2.0]heptane-3-yl)-6-fluoro-1,4-dihydro-4-oxo-1.8-naphthyridine-3-carboxylic acid To a suspension of 100 mg of 7-chloro-1-cyclopropyl-1,4-dihydro-6-fluoro-4-oxo-1,8-naphthyridine-3-carboxylic acid in 4 ml of acetonitrile were added 90 mg of DBU and 110 mg of [1alpha,5alpha,6beta]-6-amino-3-azabicyclo[3.2.0]heptane. After refluxing at 80 C. for an hour, the reaction mixture was cooled to room temperature and allowed to stand overnight. The solids thus formed were collected by filtration, washed with isopropyl ether, and then dried to give 70 mg of the titled compound (yield: 55%). m.p.: 242 C. (decomp.). 1 H-NMR(DMSO-d6 +TFA-d) delta: 8.60(1H, s), 8.2(2H, brs.), 8.00(1H, d, J=13.0 Hz), 4.6-2.9(8H, m), 2.6-2.4(1H, m), 2.0-1.8(1H, m), 1.2-0.95(4H, m). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
74% | With 1,8-diazabicyclo[5.4.0]undec-7-ene; In acetonitrile; | EXAMPLE 48 1-Cyclopropyl-6-fluoro-7-([1alpha,5alpha,6beta]-1-methyl-6-methylamino-3-azabicyclo-[3.2.0]heptane-3-yl)-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid To a suspension of 100 mg of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> in 2 ml of acetonitrile were added 60 mg of DBU, and 60 mg of [1alpha,5alpha,6beta]-1-methyl-6-methylamino-3-azabicyclo[3.2.0]heptane in 1 ml acetonitrile. The reaction mixture was stirred at room temperature for 2 hours. The solids thus formed were collected by filtration, washed with a small amount of acetonitrile, and then dried to give 102 mg of the titled compound as white solids (yield: 74%). m.p.: 245-250 C. (decomp.). 1 H-NMR(DMSO-d6 +TFA) delta: 8.58(1H, s), 8.01(1H, d, J=12.8 Hz), 4.5-1.9 (9H, m), 2.49(3H, s), 1.37(3H, s), 1.3-0.9 (4H, m). |
74% | With 1,8-diazabicyclo[5.4.0]undec-7-ene; In acetonitrile; | Example 37 1-Cyclopropyl-6-fluoro-7-([1alpha, 5alpha, 6beta]-1-methyl-6-methylamino-3-azabicyclo[3.2.0]heptane-3-yl)-1,4-dihydro-4-oxo1,8-naphthyridine-3-carboxylic acid To a suspension of 100 mg of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> in 2 ml of acetonitrile were added 60 mg of DBU, and 60 mg of [1alpha, 5alpha, 6beta]-1-methyl-6-methylamino-3-azabicyclo[3.2.0]-heptane in 1 ml of acetonitrile. The reaction mixture was stirred at room temperature for 2 hours. The solids thus formed were collected by filtration, washed with a small amount of acetonitrile, and then dried to give 102 mg of the titled compound as white solids (yield: 74 %). m.p.: 245-250 C (decomp.). 1H-NMR(DMSO-d6 + TFA) delta: 8.58(1H,s), 8.01(1H, d, J = 12.8Hz), 4.5-1.9 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
78% | With 1,8-diazabicyclo[5.4.0]undec-7-ene; In water; acetonitrile; | EXAMPLE 45 7-([1alpha,5alpha,6alpha]-6-Amino-1-methyl-3-azabicyclo[3.2.0]heptane-3-yl)-1-cyclopropyl-6-fluoro-1,4,dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid To a suspension of 95 mg of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> in 3 ml of acetonitrile were added 100 mg of DBU and 93 mg of [1alpha,5alpha,6alpha]-6-amino-1-methyl-3-azabicyclo[3.2.0]heptane. The reaction mixture was stirred at room temperature for 3 hours and concentrated under reduced pressure. The residue was dissolved in water and neutralized with an aqueous 10% hydrochloric acid solution. The solids thus formed were collected by filtration, and then dried to give 98 mg of the titled compound as light-yellow solids (yield: 78%). m.p.: 237-240 C. (decomp.). 1 H-NMR(DMSO-d6 +TFA-d) delta: 8.52(1H, s), 7.94(1H, d, J=12.8 Hz), 4.3-3.4 (6H, m), 2.9-2.7(1H, m), 2.5-2.0(2H, m), 1.37(3H, s), 1.3-1.0(4H, m). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
77% | EXAMPLE 68 7-([1alpha,6alpha,8beta]-8-Amino-6-methyl-3-azabicyclo[4.2.0]octane-3-yl)-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid, hydrochloride The same procedure as in Example 67 was repeated using 150 mg of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> and 190 mg of [1alpha,6alpha,8beta]-8-amino-6-methyl-3-azabicyclo[4.2.0]octane to give 175 mg of the titled compound (yield: 77%). m.p.: 252-256 C. 1 H-NMR(DMSO-d6) delta: 15.19(1H, brs),8.57(1H, s),7.99(1H, d,J=13.4 Hz), 4.55-3.25(6H, m),2.27-1.56(5H, m),1.56-0.98(7H, m,). | |
66% | With hydrogenchloride; acetic acid; In ethanol; acetonitrile; | EXAMPLE 67 7-([1alpha,6alpha,8beta]-8-Amino-6-methyl-3-azabicyclo[4.2.0]octane-3-yl)-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid, hydrochloride 150 mg of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> and 190 mg of [1alpha,6alpha,8beta]-8-amino-6-methyl-3-azabicyclo[4.2.0]octane were added to 3 ml of acetonitrile. The resulting mixture was stirred at 50 C. for 30 min. After cooling to room temperature, the resulting solution was added 3 drops of acetic acid and stirred for 10 minutes. The solids precipitated were filtered and washed with acetonitrile. The solids thus obtained were suspended in 3 ml of ethanol. To the suspension was added 4-5 drops of concentrated hydrochloric acid while stirring to dissolve any solids completely. The resulting solution was allowed to stand. The solids precipitated were collected by filtration, washed with cold ethanol and then with isopropyl ether. Drying the solids gave 150 mg of the titled compound (yield: 66%). m.p.: 263-266 C. 1 H-NMR(DMSO-d6) delta: 15.37(1H, brs),8.57(1H, s),8.47(1H, brs),7.97 (1H, d, J=13.5 Hz),4.60-2.60(6H, m),2.65-1.57(5H, m), 1.48-0.93(7H, m). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
84% | With 1,8-diazabicyclo[5.4.0]undec-7-ene; In acetonitrile; | EXAMPLE 26 7-([1alpha,5alpha,6beta]-6-Amino-5-methyl-3-azabicyclo[3.2.0]heptane-3-yl)1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid To a suspension of 180 mg of 7-chloro-1-cyclopropyl-1,4-dihydro-6-fluoro-4-oxo-1,8-naphthyridine-3-carboxylic acid in 5 ml of acetonitrile were added 130 mg of DBU and mg of [1alpha,5alpha,6beta]-6-amino-5-methyl-3-azabicyclo[3.2.0]heptane. The reaction mixture was stirred at 50 C. for 1.5 hours and cooled to room temperature. The solids thus formed were collected by filtration, washed with isopropyl alcohol, and then dried to give 200 mg of the titled compound (yield: 84%). m.p.: 265-270 C. (decomp.). 1 H-NMR(DMSO-d6 +TFA-d) delta: 8.55(1H, s), 7.94(1H, d, J=12.9 Hz), 4.5-4.3 (1H, m), 4.1-3.8(1H, m), 3.7-3.3(4H, m), 2.7-2.4(2H, m), 1.9-1.6(1H, m), 1.37(3H, s), 1.3-1.1 (4H, m). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In acetonitrile; | EXAMPLE 31 STR44 290 mg (~1.5 mmol) of 86% pure 4-aza-tricyclo[5.2.2.02,6 ]undec-8-en-1-ylamine are added to 283 mg (1 mmol) of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> in 6 ml of acetonitrile at 25 C. and the mixture is stirred at 25 C. for 1 hour. The precipitate is filtered off with suction, washed with ethanol, dried at 60 C./0.1 mbar (crude yield: 398 mg) and purified by chromatography (silica gel, methylene chloride/17% strength aqueous ammonia/methanol 30:8:1). Yield: 171 mg (42% of theory) of 7-(1-amino-4-azatricyclo[5.2.2.02,6 ]undec-8-en-4-yl)-1-cyclopropyl-6-fluoro-1,4-dihydro-4oxo-1,8-naphthyridine-3-carboxylic acid, Melting point: 308-311 C. (with decomposition). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In acetonitrile; | STR58 332 mg (2.4 mmol) of (3aRS,4RS)-2,3,3a,4,5,6-hexahydro-1H-isoindol-4-ylamine are added to 283 mg (1 mmol) of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> in 6 ml of acetonitrile and the mixture is healed at 50 C. for 1 hour. The precipitate which has separated out is filtered off with suction, washed with acetonitrile and purified by chromatography: silica gel, methylene chloride/methanol/17% strength aqueous ammonia (30:8:1). Yield: 76 mg (20% of theory) of 7-[(3aRS,4RS)-4-amino-2,3,3a,4,5,6-hexahydro-1H-isoindol-2-yl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid, Melting point: 263-265 C. (with decomposition). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
EXAMPLE 1 Synthesis of 7-(4-aminomethyl-3-benzyloxyimino-pyrrolidin-1-yl)-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid STR48 622 mg of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong> and 643 mg of the compound prepared in Preparation 18 were suspended in 15 ml of acetonitrile. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | EXAMPLE 180 Synthesis of 7-(4-aminomethyl3-methoxyiminopyrrolidin-1-yl)-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro[1,8]naphthyridine-3-carboxylic acid STR243 141 mg (0.5 mmole) of 1-cyclopropyl-7-chloro-6-fluoro-4-oxo-1,4-dihydro[1,8]naphthyridine-3-carboxylic acid and 205 mg (0.5 mmole) of 4-aminomethylpyrrolidin-3-one O-methyloxime ditrifluoroacetate were reacted for 0.5 hour according to the same manner as Example 177 to obtain 167 mg (Yield: 85%) of the title compound. 1 H NMR (DMSO-d6, ppm): delta8.6(1H, s), 8.05(1H, d), 4.55(2H, s), 4.3(1H, m), 3.85(3H, s, 1H, m), 3.7 (1H, m), 3.1-3.0(2H, m), 1.2-1.0(4H, m) FAB MS(POS): [M+H]=390 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In acetonitrile; | Example 3 (S)-7-[3-(1-Amino-1-methylethyl)-1-pyrrolidinyl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid, monohydrochloride A solution of 0.39 g (1.39 mmol) of <strong>[100361-18-0]7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid</strong>, 0.35 g (1.53 mmol) of (3S)-(1'-methyl-1'-t-butoxycarbonylaminoethyl)pyrrolidine (9b), 0.46 g (4.6 mmol) of triethylamine and 20 mL of acetonitrile was stirred at reflux for 18 hours. The reaction mixture was cooled to 0 C. and the solid was removed by filtration, washed with acetonitrile, ether, and dried in vacuo to give 1.13 g of a white solid. The filtrate was concentrated to give an additional 0.95 g of white solid. The combined solids were chromatographed on E. Merck silica gel (230-400 mesh), eluding with CHCl3 /MeOH (90:10) to give 1.76 g of (S)-7-[3-(t-butoxycarbonylamino-1-methylethyl)-1-pyrrolidinyl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid; NMR (DMSO-d6); delta 8.55 (s, 1H), 7.95 (d, 1 H), 6.7 (bs, 1H), 3.51-4.20 (m, 3H), 2.95-3.11 (m, 3H), 2.0 (m, 1H), 1.9 (m, 1H), 1.17-1.37 (m, 19H). |
Tags: 100361-18-0 synthesis path| 100361-18-0 SDS| 100361-18-0 COA| 100361-18-0 purity| 100361-18-0 application| 100361-18-0 NMR| 100361-18-0 COA| 100361-18-0 structure
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