Structure of 4093-88-3
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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. : | 4093-88-3 |
Formula : | C6H7N3O2 |
M.W : | 153.14 |
SMILES Code : | O=[N+](C1=CC=CN=C1NC)[O-] |
MDL No. : | MFCD00223335 |
InChI Key : | SILGRKFIVIVPKA-UHFFFAOYSA-N |
Pubchem ID : | 556349 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H332-H335 |
Precautionary Statements: | P280-P305+P351+P338-P310 |
Num. heavy atoms | 11 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.17 |
Num. rotatable bonds | 2 |
Num. H-bond acceptors | 3.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 42.36 |
TPSA ? Topological Polar Surface Area: Calculated from |
70.74 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.17 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.55 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
0.84 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
0.25 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
-1.12 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
0.54 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.04 |
Solubility | 1.4 mg/ml ; 0.00917 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.65 |
Solubility | 0.347 mg/ml ; 0.00226 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-1.83 |
Solubility | 2.27 mg/ml ; 0.0148 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 |
-6.13 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 |
1.0 |
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) |
2.16 |
* 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% | at 80℃; for 8 h; Sealed tube | To a solution of 3-nitro-2-chloropyridine (4.0 g, 25.2 mmol) in 15 mL 2-methoxyethanol was added methylamine (2.0 M in THF, 32 mL). The reactionwas stirred for 8 hr at 80 °C in a sealed tube. After cooling to rt, the reaction mixture was evaporated to afford 15 quantitatively (3.6 g, 23.2 mmol). 1H NMR (500 MHz, CDCl3) δ 8.47 – 8.37 (m, 2H), 8.20 (s, 1H), 6.64 (dd, J = 8.3, 4.4 Hz, 1H), 3.17 (d, J = 4.8 Hz, 3H). 13C NMR (126 MHz, CDCl3) δ 156.0, 153.5, 135.4, 111.7, 28.4. HRMS (ESI+) m/z calcd for C6H8N3O2+ 154.0617, found 154.0610. |
98.5% | at 0 - 20℃; for 3 h; | Methylamine (33percent in EtOH) (1 10 mL, 883 mmol) was placed in a 500 mL three necked round bottom flask. It was cooled to 0 °C using ice bath. 2-chloro-3-nitropyridine (20 g, 126 mmol) was added to the above solution in portions as this is an exothermic reaction. After the addition was complete the reaction mixture was stirred for 2 h at 0 °C and later 1 h at room temperature. Solvent was concentrated and residue was taken in 500 mL of water and extracted with EtOAc 3 x 150 mL. Combine organic layer was dried over Na2SC"4, filtered and concentrated to give a bright orangish yellow solid(19 g , 98.5percent). |
95.76% | With triethylamine In dichloromethane at 20℃; for 5 h; | 24 mL of methylamine, 39.5 mL of triethylamine was added to 240 mL of dichloromethane, and 30 g(0.18 mol) of 2-chloro-3-nitropyridine, and the reaction was completed at room temperature for 5 h. After completion of the reaction, the reaction solution was washed three times with waterInto anhydrous sodium sulfate in addition to water, suction filtration, steaming, yellow crystalline solid product 44.8g (yield 95.76percent). |
86% | With sodium acetate In water; acetonitrile at 20℃; Heating / reflux | 2-chloro-3-nitropyridine 70.0 g, 0.44 mol) was dissolved in recently distilled acetonitrile (400 mL) under stirring. Sodium acetate (55.2 g, 0.67 mol) and 30percent aqueous solution of methylamine (111 mL) were added under vigorous stirring. The obtained suspension was stirred at room temperature for 30 min, refluxed for 1 h, and kept overnight at room temperature. The yellow reaction mixture was concentrated under reduced pressure to remove approximately 300 mL of the solvent. The residue was diluted with 20percent aqueous solution of K2CO3 (1 L) under stirring. The yellow precipitate was filtered off, washed with water (3° * 200 mL), and dried to afford W-Methyl-3-nitropyridin-2-amine in 86percent (58.14 g, 0.38 mol) yield as bright yellow crystals. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98.5% | With methylamine In ethanol; water | Synthesis of N-methyl-3-nitropyridin-2-amine Methylamine (33percent in EtOH) (110 mL, 883 mmol) was placed in a 500 mL three necked round bottom flask. It was cooled to 0° C. using ice bath. 2-chloro-3-nitropyridine (20 g, 126 mmol) was added to the above solution in portions as this is an exothermic reaction. After the addition was complete the reaction mixture was stirred for 2 h at 0° C. and later 1 h at room temperature. Solvent was concentrated and residue was taken in 500 mL of water and extracted with EtOAc 3*150 mL. Combine organic layer was dried over Na2SO4, filtered and concentrated to give a bright orangish yellow solid (19 g, 98.5percent). |
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