Structure of 187242-88-2
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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. : | 187242-88-2 |
Formula : | C11H7ClN2O2 |
M.W : | 234.64 |
SMILES Code : | O=[N+](C1=CC=C(C2=CC=CC=C2)N=C1Cl)[O-] |
MDL No. : | MFCD22380358 |
InChI Key : | FEXPVVIOGUUGJM-UHFFFAOYSA-N |
Pubchem ID : | 10537690 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 16 |
Num. arom. heavy atoms | 12 |
Fraction Csp3 | 0.0 |
Num. rotatable bonds | 2 |
Num. H-bond acceptors | 3.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 63.51 |
TPSA ? Topological Polar Surface Area: Calculated from |
58.71 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.82 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
3.3 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
3.31 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
2.31 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
1.4 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
2.43 |
Log S (ESOL):? ESOL: Topological method implemented from |
-3.8 |
Solubility | 0.0375 mg/ml ; 0.00016 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-4.21 |
Solubility | 0.0145 mg/ml ; 0.0000619 mol/l |
Class? Solubility class: Log S scale |
Moderately soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-4.55 |
Solubility | 0.00667 mg/ml ; 0.0000284 mol/l |
Class? Solubility class: Log S scale |
Moderately 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 |
Yes |
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) |
Yes |
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
Yes |
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 |
-5.39 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 |
3.0 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) |
2.25 |
* 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 |
---|---|---|
33% | With tert.-butylnitrite; copper(l) chloride; In acetonitrile;Heating; Inert atmosphere; | A 3 L, three-neck RB flask equipped with a stirrer, argon inlet, reflux condenser and thermometer was charged with acetonitrile (1500 mL), Cu(I)Cl (59.7 g, 604.0 mmol) and tert-butyl nitrite (112.2 mL, 929 mmol). The mixture was heated to 40-50 C. and 1 (100.0 g, 467.3 mmol) was then added in portions. The resulting mixture was stirred at 40-50 C. for one hour and the reaction was deemed complete by HPLC. The reaction was quenched with aqueous ammonium chloride solution (2.0 L, 20 vol.) and diluted with MTBE (2.0 L, 20 vol.). The organic layer was removed and the aqueous layer was extracted with MTBE (2×1 L, 20 vol.). The combined organic layers were treated with charcoal and heated to 50 C. The hot solution was filtered through a pad of Celite and the Celite pad was washed with hot MTBE (1 L, 1 vol.), dried over sodium sulfate and concentrated to give crude 1? (61.1 g, 60.7%). The crude compound was triturated in methanol (183 mL, 3 vol. with respect to crude weight) for 15 minutes. The solids were filtered, washed with methanol (30 mL) and dried to obtain 1? (48.0 g, 43.4%). This was triturated with heptanes (100 mL, 1 vol.) at ambient temperature for one hour, filtered and washed with heptanes (25 mL) and dried to give 1? as yellow solid (42.02 g, 38.5%, 97.6% purity). The compound was characterized by 1H NMR (CDCl3) and MS. Additional lots were prepared using this procedure and the results can be seen in Table1 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
41% | With caesium carbonate;tetrakis(triphenylphosphine) palladium(0); In 1,4-dioxane; water; at 100℃; for 0.166667h;Microwave irradiation; | (7) Preparation of 2-chloro-3-nitro-6-phenylpyridine To the solution of 2,6-dichloro-3-nitropyridine (1.00 g, 5.18 mmol) in anhydrous 1,4-dioxane were added PhB(OH)2 (0.695 g, 5.70 mmol), Cs2CO3 (2 M in H2O, 7.5 mL, 15 mmol) and (PPh3)4Pd (0.025 g, 0.02 mmol). The mixture was flushed with N2 several time and heated to 100 C. in microwave for 10 min, then cooled to rt, poured into water and extracted with EtOAc. The combined extracts were washed with water and brine, dried over MgSO4, filtered and concentrated in vacuo. The crude material was purified by flash column chromatography (5% EtOAC in Hexane) on silica gel to afford the desired compound (0.5 g, 41%). LC/MS: m/z 235 (M+H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
33% | (8) Preparation of 7-chloro-5-phenyl-1H-pyrrolo[2,3-c]pyridine To the solution of <strong>[187242-88-2]2-chloro-3-nitro-6-phenylpyridine</strong> (0.5 g, 2.13 mmol) in THF was added vinyl Magnesium bromide (1 M in THF, 6.3 mL) at -40 C. The reaction was stirred for 30 min and warmed to rt, poured into NH4Cl and extracted with EtOAc. The combined extracts were washed with water and brine, dried over MgSO4, filtered and concentrated in vacuo. The crude material was purified by flash column chromatography (15% EtOAC in Hexane) on silica gel to afford the desired compound (0.160 g, 33%). LC/MS: m/z 229 (M+H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% | With sodium carbonate; In N,N-dimethyl acetamide; at 100℃; for 18.5h; | 1? (48.0 g, 1.0 equiv.), 2? (59.0 g, 1.1 equiv.), and Na2CO3 (43.4 g, 2.0 equiv.) were charged to a 2 L, 3-neck flask. DMA (310 mL, 6.5 vol.) was added and the reaction was heated to 100 C. After 18.5 hours, HPLC analysis showed the reaction to be complete. The reaction was cooled to 9 C. and 2-MeTHF (960 mL, 20 vol.) was added. 10% aqueous solution of NaCl (720 mL, 15 vol.) was added resulting in some solid formation. The mixture was stirred for one hour and then transferred to a separatory funnel (rinsed the solids forward with 100 mL water). The layers were separated and the aqueous layer (Vaq1200 mL) was back extracted with 2-MeTHF (2×200 mL). The combined organics were then washed with 10% aqueous solution of NaCl (2×250 mL) and then analyzed by 1H NMR for DMA (0.3 wt %). After holding the solution overnight, an aliquot was taken out (6 mL) and was washed (3 mL) with water which resulted in a nice phase split (took >30 minutes). Water (650 mL, batch size) was added and stirred for 10 minutes and then transferred to a separatory funnel and allowed to sit. After 90 minutes, a partial phase split was realized (Vaq=250 mL). Brine (250 mL) was added resulting in a phase split. The organic layer (1300 mL, 27 vol., Kf=3.45%) was split off and charged to a 3-L RB flask. The flask was heated (atmospheric) to distill off some of the 2-MeTHF. Once 15 volumes of 2-MeTHF (720 mL) remained (30 minutes), the solution was reanalyzed for water content (Kf=0.24%). The reaction was then cooled to 50-55 C. and polished filtered through filter paper (very little solids present). The solution was then recharged to the 3-L flask (after cleaning flask) and the solution was distilled down to 9 volumes (430 mL). The solution was then heated to 70 C. and heptane was added in portions over one hour. The heat was then turned off and the solution was allowed to slowly cool to room temperature (after one hour the temperature was 48 C.). After stirring for 70 hours, the mother liquor was checked by HPLC analysis for 3 (2.7 mg/mL) and then filtered. The solids were washed with a 25% 2-MeTHF/heptane solution (75 mL, slurry) followed by 2×240 mL displacement wash with the same solution. The cake was washed one more time with heptane (240 mL) and then dried in a vacuum oven for 20 hours at room temperature. 3 (81.1 g, 86% yield, 99.2% AUC) was isolated as a dark red solid. 1H NMR (CDCl3) analysis showed no residual solvent present. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
96% | With trichlorophosphate; In acetonitrile; at 70 - 80℃;Inert atmosphere; | A 20 L jacketed reactor equipped with temperature probe, nitrogen inlet and reflux condenser was charged with acetonitrile (6.0 L, 5 vol.) followed by 1a (1.2 kg, 5.5 mol.) and then POCl3 (1.2 L, 1 vol.) was added over a period of 5 minutes. The reaction mixture was slowly heated to 70-80 C. for 12-15 hours before the reaction was deemed complete by HPLC. The reaction mixture was cooled to room temperature and quenched into ice water (24 L) below 10 C. and basified to pH: 8-9 with 6 N NaOH solution (7.2 L) below 15 C. The precipitated solids were filtered off and washed with DI water (3.6 L, 3 vol.) and dried to obtain 1? as a dark brown solid (786 g, 60.8%). The crude 1? was dissolved in EtOAc (12 L, 10 vol.) [Note: some insoluble solids were observed] and stirred for 30 minutes. The solution was filtered through Celite bed and washed with EtOAc (3 L, 3 vol.). The organic solution was treated with charcoal, filtered off through a pad of Celite and the Celite pad was washed with ethyl acetate (3 L, 3 vol.). The resulting filtrate was concentrated to dryness to furnish 1? (688.3 g, 52.9%, 98.07% purity). The compound was characterized by 1H NMR (CDCl3) and MS. The batch summary for the preparation of 1? from 1a can be seen in Table 2 and 3. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
65% | With tetrakis(triphenylphosphine) palladium(0); potassium carbonate; In tetrahydrofuran; water; at 70℃; for 5.0h; | 36.7 g (183 mmol) of (4-bromophenyl)boronic acid,43.5 g (183 mmol) of 6-bromo-2-chloro-3-nitropyridine, 4 2.1 g (1.83 mmol) of Pd (PPh3), 75.7 g (549 mmol) )The K2CO3 was dissolved in a 500 ml THF/H 2 O (2/1) mixed solution, and stirred at 70 C for 5 hours. Cooling the reaction solutionTo room temperature, 40 mL of water was added and extracted three times with 50 mL of diethyl ether. The combined organic layers were dried over magnesium sulfate and distilled offThe solvent was separated and purified by silica gel column chromatography to obtain 27.9 g (yield: 65%) of B-2. |
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