Structure of 34529-06-1
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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CAS No. : | 34529-06-1 |
Formula : | C10H11NO4 |
M.W : | 209.20 |
SMILES Code : | COC(=O)C1=CC=CC(N)=C1C(=O)OC |
MDL No. : | MFCD09029586 |
InChI Key : | VEJKSNHPNFHCLF-UHFFFAOYSA-N |
Pubchem ID : | 13399384 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302 |
Precautionary Statements: | P280-P305+P351+P338 |
Num. heavy atoms | 15 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.2 |
Num. rotatable bonds | 4 |
Num. H-bond acceptors | 4.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 53.41 |
TPSA ? Topological Polar Surface Area: Calculated from |
78.62 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.77 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.73 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
0.85 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
1.26 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
0.92 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.3 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.26 |
Solubility | 1.15 mg/ml ; 0.00551 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-3.0 |
Solubility | 0.21 mg/ml ; 0.00101 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-2.2 |
Solubility | 1.33 mg/ml ; 0.00634 mol/l |
Class? Solubility class: Log S scale |
Soluble |
GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
No |
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
No |
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
No |
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
No |
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
No |
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
No |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-6.35 cm/s |
Lipinski? Lipinski (Pfizer) filter: implemented from |
0.0 |
Ghose? Ghose filter: implemented from |
None |
Veber? Veber (GSK) filter: implemented from |
0.0 |
Egan? Egan (Pharmacia) filter: implemented from |
0.0 |
Muegge? Muegge (Bayer) filter: implemented from |
0.0 |
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.55 |
PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
Brenk? Structural Alert: implemented from |
2.0 alert: heavy_metal |
Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<1.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
1.73 |
* 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 |
---|---|---|
100% | With hydrogen;palladium on activated charcoal; In methanol; under 2844.39 Torr; | [0030] The synthesis of mIBX is readily accomplished from commercially available 3-nitrophtalic acid as follows: esterification of 3-nitrophtalic acid via the corresponding acid chloride to give nitrodiester (100%), which upon catalytic hydrogenation provides the aminodiester (100%). Diazotization is then performed, followed by iodination of the aminodiester to provide dimethyl 3-iodophthalate in about 91 % yield. This is followed by saponification, then acidification of dimethyl 3-iodophthalate to give 3-iodophthalic acid in about 93 % yield. 3-iodophthalic acid is then oxidized to form the water-soluble MIBX. This process is carried out using KBrO3 in 0.73H2SO4 at 55-60 C. as follows: KBrO3 (5 g, 30 mmol) is added in portions to a suspension of 3-iodophthalic acid (5 g, 17.1 mmol) in 70 ML of 0.73 M H2SO4 over a period of 20 minutes; The mixture is then maintained at 55-60 C. for 12 hours and the resulting clear orange solution is evaporated to yield an off-white solid, which is triturated with 30 ML of water at 0 C. for 2 hours and filtered to obtain a white solid.This is further triturated with hexane (100 ML) for 6 hours and filtered to give MIBX (3.9 g, 71%) as a white solid with a melting point of 258-260 C. The approximately 70% yield for the conversion of 3-iodophthalic acid to MIBX is the isolated yield of MIBX, with the actual conversion near quantitative as evident from monitoring the oxidation of 3-iodophthalic acid to MIBX by 1H NMR spectroscopy. Water-soluble MIBX is isolated as an analytically pure white solid.The synthesis of MIBX from 3-nitrophthalic acid is illustrated in . The physical properties of MIBX are as follows: mp 258-260 C.; IR (KBr), 3503 3469, 3050, 1708, 1631, 1588, 1369, 730, 700 cm-1; 1H NMR (D2O), 300 MHz): δ 8.35 (dd, J=7.9, 1.0 Hz, 1H), 8.09 (t, J=7.9 Hz, 1H), 7.94 (dd, J=7.9, 1.0 Hz, 1H); 13C NMR (D2O, 75 MHz): δ 125.5, 127.5, 132.5, 134.7, 137.0, 147.1 (ring carbons), 168.9, 172.9 (carbonyl carbons). |
93.7% | With palladium 10% on activated carbon; hydrogen; In methanol; for 16h; | (2) The <strong>[13365-26-9]dimethyl 3-nitrophthalate</strong> (239 mg, 1 mmol) obtained in the step (1) was dissolved in methanol (4 mL), and a catalytic amount of 10% Pd/C was added. Under the action of H2 (hydrogen balloon), after 16 hours of reaction, TLC detected the disappearance of <strong>[13365-26-9]dimethyl 3-nitrophthalate</strong>, Pd/C was removed by filtration, concentrated under reduced pressure, Drying a yellow solid (196 mg, yield 93.7%, HPLC purity 93.1%) is dimethyl 3-aminophthalate; by recrystallization or silica gel column chromatography, dimethyl 3-aminophthalate having a purity of ≥99% can be obtained. |
90% | With palladium 10% on activated carbon; hydrogen; In ethanol; | (3) Synthesis of dimethyl 3-aminophthalate (compound 4) Dimethyl 3-nitrophthalate (18.1 g, 75.7 mmol) from step (2) was dissolved in 400 mL ethanol and 10% Pd/C (50% water, 1.8 g) was added. The reaction mixture was stirred overnight under a hydrogen atmosphere. The reaction mixture was filtered, and the filter cake was wash with ethanol. Ethanol was removed to give compound 4 as a yellow solid (14.2 g, 90%). |
86% | 5.40.2 3-Aminophthalic Acid Dimethyl Ester A mixture of 3:1 ethanol-conc. HCl (200 mL) was cooled to 0 C. and then 3-nitrophthalic acid dimethyl ester (15.0 g, 62.8 mmol) was added. Maintaining the cooling, tin chloride (70.8 g, 314 mmol) was added portionwise, over a period of 15 minutes. Following completion of the addition, the cooling bath was removed, and stirring proceeded at room temperature. After 2 hours, the mixture was neutralized by the addition of solid sodium bicarbonate, and the resulting mixture was extracted with ethyl acetate (3×150 mL) and the combined extracts were washed with water (5×250 mL), were dried (MgSO4) and evaporated, providing 11.3 g of the product as a yellow oil in 86% yield: 1H NMR (CDCl3) δ 3.84 (s, 3H), 3.86 (s, 3H), 5.20 (br, 2H), 6.78 (dd, J=8.5 Hz, J=1.0 Hz, 1H), 6.90 (dd, 1H, J=7.3 Hz, J=1.0 Hz, 1H), 7.24 (t, J=7.8 Hz, 1H). | |
86% | Step 2:[163] A mixture of 3:1 ethanol-conc. HCl (200 mL) was cooled to 0 0C and then 3- nitrophthalic acid dimethyl ester (15.0 g, 62.8 mmol) was added. Maintaining the cooling, tin (II) chloride (70.8 g, 314 mmol) was added portionwise, over a period of 15 min. Following completion of the addition, the cooling bath was removed and stirring proceeded at room temperature. After 2 h, the mixture was neutralized by the addition of solid sodium bicarbonate, and the resulting mixture was extracted with ethyl acetate (3 x 150 mL) and the combined extracts were washed with water (5 x 250 mL), were dried (MgSO4) and evaporated, providing 11.3 g of 3-aminophthalic acid dimethyl ester as a yellow oil, in 86% yield; 1H NMR (CDCl3) δ 3.84 (s, 3H), 3.86 (s, 3H), 5.20 (br, 2H), 6.78 (dd, J = 8.5 Hz, J = 1.0 Hz, IH), 6.90 (dd, IH, J = 7.3 Hz, J = 1.0 Hz, IH), 7.24 (t, J = 7.8 Hz, IH). | |
83% | With hydrogenchloride; In methanol; water; | REFERENCE EXAMPLE 102 Dimethyl 3-aminophthalate Dimethyl 3-nitrophthalate (18.0 g, 75.2 mmol) obtained in Reference Example 101 was dissolved in a mixture of concentrated hydrochloric acid (50.0 ml) water (250 ml) and methanol (25.0 ml), and an excess of zinc powder was added in portions. After completion of the reaction, the reaction mixture was filtered, and the filtrate was made basic with 25% aqueous ammonium hydroxide, and extracted with ethyl acetate. After the extract was washed with water and dried (MgSO4), the solvent was distilled off under reduced pressure. The residue was subjected to a column chromatography on a silica gel eluding with n-hexane-ethyl acetate (10:1, v/v) to give the title compound (13.1 g, 83%) as an oil. 1H-NMR (CDCl3) δ: 3.85 (3H, s), 3.86 (3H, s), 5.20 (2H, bs), 6.78 (1H, dd, J=8.4, 1.2 Hz), 6.90 (1H, dd, J=7.4, 0.8 Hz), 7.24 (1H, d, J=8.0 Hz). |
18.1 g (87%) | With hydrogen;palladium-carbon; In ethyl acetate; | Methyl-3-amino-2-(methoxycarbonyl)benzoate To a solution of methyl-2-(methoxycarbonyl)-3-nitrobenzoate (23.8 g, 99.51 mmol) in ethyl acetate (200 ml) was added 10% Pd/C (1.8 g). The mixture was hydrogenated under 50 psi of hydrogen for 3 hours in a Parr Type Shaker. The mixture was filtered through Celite and the filtrate was concentrated in vacuo to yield an oil. The crude product was purified by flash chromatography (dichloromethane/ethyl acetate 95 to 5) to afford 18.1 g (87%) of the product as a brown oil: 1H NMR (CDCl3) δ7.22 (t, J=7.6 Hz, 1H), 6.90 (d, J=7.2 Hz, 1H), 6.79 (d, J=8.7 Hz), 5.07 (b, 2H), 3.85 (s, 3H), 3.83 (s, 3H). |
With hydrogen;palladium 10% on activated carbon; In methanol; at 20℃; under 2327.23 Torr; | Preparation of 3-amino-phthalic Acid Dimethyl Ester, 3 The compound 2 (205 g, 1.0 mol) was dissolved in 2 L of MeOH. Catalytic 10% Pd/C was added and the solution was hydrogenated under H2 (45 psi) on a Parr hydrogenation apparatus at room temperature overnight. Filtered through celite and evaporated to give a quantitative yield of 3-amino-phthalic acid dimethyl ester, 3. 1H NMR (300 MHz, DMSO-d6): 7.26 (t, J=7.33 Hz, 1H), 6.94 (d, J=8.34 Hz, 1H), 6.77 (d, J=8.33 Hz, 1H), 6.12 (s, 2H), 3.77 (s, 3H), 3.76 (s, 3H). 13C NMR: 51.51, 51.77, 110.50, 115.16, 118.56, 131.26, 133.16, 148.28, 167.12, 168.11. | |
With palladium 10% on activated carbon; hydrogen; In acetone; at 20℃; under 3102.97 Torr; for 5h; | Dissolve Compound 1 (500mg) in acetone (30mL) solution, transfer to a hydrogenation reaction flask, add Pd / C (40mg, 10%), build a hydrogenation device, and react at 60psi for 5h at room temperature. , Remove the device, remove Pd / C by suction filtration, condense at low temperature by rotary evaporation, extract with ethyl acetate (30mLx3), combine the organic layers, wash once with saturated brine, add anhydrous magnesium sulfate to dry, and dry by suction filtration to obtain crude product. Column chromatography to obtain intermediate 2 |
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