Structure of 23056-35-1
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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. : | 23056-35-1 |
Formula : | C6H5ClN2O2 |
M.W : | 172.57 |
SMILES Code : | CC1=NC=CC(Cl)=C1[N+]([O-])=O |
MDL No. : | MFCD11215572 |
InChI Key : | NRXOKEODPIKBFA-UHFFFAOYSA-N |
Pubchem ID : | 14448144 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 11 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.17 |
Num. rotatable bonds | 1 |
Num. H-bond acceptors | 3.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 43.03 |
TPSA ? Topological Polar Surface Area: Calculated from |
58.71 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.26 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.71 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.95 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
0.22 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
0.3 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.09 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.32 |
Solubility | 0.817 mg/ml ; 0.00473 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.56 |
Solubility | 0.477 mg/ml ; 0.00276 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-2.4 |
Solubility | 0.679 mg/ml ; 0.00394 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 |
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) |
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 |
-6.14 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) |
1.78 |
* 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 |
---|---|---|
In dichloromethane; trichlorophosphate; | Step 4 4-chloro-3-nitro-2-picoline A mixture of 4-hydroxy-3-nitro-2-picoline (820 mg, 5.32 mmol) and phosphorous pentachloride (1.11 g, 5.32 mmol) in phosphorous oxychloride (6 mL) was heated for 2 hours in a 100° C. oil bath. The phosphorous oxychloride was removed under vacuum and after cooling to room temperature, the residue was partitioned between ice (10 mL) and methylene chloride (10 mL). The aqueous layer was re-extracted with additional methylene chloride (2*10 mL) and the combined extracts were dried with magnesium sulfate, filtered and gave the title compound as a light brown solid upon evaporation (0.787 g). 1 H NMR (CDCl3, 300 MHz) delta2.60 (s, Me),7.35 (d, ArH) and 8.51 (d, ArH). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With carbon disulfide; sodium sulfide nonahydrate; hydrogen sulfide; In water; | Step 7 6-hydroxymethyl-2-thioxo-2,3-dihydrothiazolo[4,5-c]pyridine A suspension of sulfur (0.5 g, 15.6 mmol) and sodium sulfide nonahydrate (1.84 g, 7.66 mmol) in water (5 mL) was heated in a 50° C. oil bath for 15 minutes. The amber colored solution was cooled to room temperature and the 2:1 mixture of 4-chloro-3-nitro-2-acetoxymethylpyridine/<strong>[23056-35-1]4-chloro-3-nitro-2-picoline</strong> (0.25 g, 0.36 mmol) and carbon disulfide (2 mL, 33.4 mmol) were added, and the mixture was heated in a 70° C oil bath for 18 hours under a nitrogen atmosphere. Workup and chromatography as described in Step 3 of Preparative Example 4 afforded an approximately 4:1 ratio mixture of the title compound and 6-methyl-2-thioxo-2,3-dihydrothiazolo[4,5-c]pyridine (88 mg), as observed by 1 H NMR. 1 H NMR (DMSO-d6, 300 MHz) delta4.83 (s, CH2 OH), 7.75 (d, ArH) and 8.21 (d, ArH). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In dichloromethane; acetic anhydride; ethyl acetate; | Step 6 4-chloro-3-nitro-2-(acetoxymethyl)pyridine A 45:55 mixture of <strong>[23056-35-1]4-chloro-3-nitro-2-picoline</strong> N-oxide and <strong>[23056-35-1]4-chloro-3-nitro-2-picoline</strong> (0.48 g, 1.15 mmol) in acetic anhydride (5 mL, 53 mmol) was placed in a 60° C. oil bath for 1 hour. The temperature of the oil bath was then increased to 70° C. over the next 1.5 hours. The solution was cooled to room temperature, evaporated and partitioned between methylene chloride (20 mL) and saturated aqueous potassium carbonate (120 mL). The aqueous layer was re-extracted with more methylene chloride (2*20 mL) and the combined extracts were dried with magnesium sulfate, filtered and evaporated to a foam (0.43 g), The foam was dissolved in methylene chloride and was placed on preparative silica plates (5*1000 micron, analtech, 20*20 cm) which were developed with 5percent ethyl acetate in methylene chloride and eluted with ethyl acetate to give an approximately 1:2 mixture of the title compound and 4-chloro-3-nitro-2 -picoline(0.25 g). 1 H NMR (CDCl3, 400 MHz) delta2.15 (s, OAc), 5.16 (s, CH2 OAc),7.38 (d, ArH) and 8.47 (d, ArH). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In peracetic acid; trifluoroacetic acid; | Step 5 <strong>[23056-35-1]4-chloro-3-nitro-2-picoline</strong> N-oxide <strong>[23056-35-1]4-chloro-3-nitro-2-picoline</strong> (0.787 g, 4.6 mmol) was dissolved in a mixture of trifluoroacetic acid (3 mL) and 32percent peracetic acid (2 mL) and was heated in a 60° C. oil bath for 4 hours, with an addition of 32percent peracetic acid at 2 hours (2 mL). The solution was cooled to room temperature and was partitioned between methylene chloride (30 mL) and saturated aqueous potassium carbonate (30 mL). The aqueous layer was re-extracted with more methylene chloride (2*20 mL) and the combined extracts were dried with magnesium sulfate, filtered and evaporated to give a 45:55 mixture of the title compound and <strong>[23056-35-1]4-chloro-3-nitro-2-picoline</strong>(0.5 g). 1 H NMR (CDCl3, 300 MHz) delta2.60 (s, Me), 7.35 (d, ArH) and 8.51 (d, ArH). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
When in accordance with the procedure of example 1, equal molar amounts of the following are substituted for 3-nitro-2-chloropyridine:...2-chloro-3-nitro-5-methylpyridine,2-chloro-3-nitro-6-methylpyridine,2-chloro-3-nitro-5,6-dimethylpyridine,2-chloro-3-nitro-6-methoxypyridine, and4-chloro-3-nitro-2-methylpyridine, |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
38% | With (2-fluoro-3-(trifluoromethyl)phenyl)(1-(4-fluorophenyl)-4-methyl-6,7-dihydro-1H-imidazo[4,5-c]pyridin-5(4H)-yl)methanone; palladium diacetate; potassium carbonate; In toluene; at 110.0℃; for 1.0h;Microwave irradiation; | A solution of Pd(OAc)2 (0.15 g, 0.68 mmol) and BINAP (0.42 g, 0.68 mmol) were stirred in toluene (2 ml) at rt for 10 minutes. This mixture was then added to a microwave vial which contained <strong>[23056-35-1]4-chloro-2-methyl-3-nitropyridine</strong> (3.00 g, 16.8 mmol), 2-amino-4-fluoropyridine (2.20 g, 18.5 mmol), and K2CO3 (2.6 g, 18.6 mmol) in toluene (10 ml). The reaction was irradiated in a microwave apparatus at 110° C. for 1 h. The reaction was diluted with DCM, filtered through Celite©, washed, and concentrated. Chromatography of the resulting residue (SiO2; EtOAc:Hex) gave the desired compound (1.60 g, 38percent). MS (ESI): mass calculated for C10H8ClFN5O2, 249.07; m/z found 250.0 [M+H]+. |
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