Structure of 3430-29-3
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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. : | 3430-29-3 |
Formula : | C6H6Br2N2 |
M.W : | 265.93 |
SMILES Code : | CC1=C(Br)C(N)=NC=C1Br |
MDL No. : | MFCD01646065 |
InChI Key : | LLGXZSVWYCKUBB-UHFFFAOYSA-N |
Pubchem ID : | 817683 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 10 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.17 |
Num. rotatable bonds | 0 |
Num. H-bond acceptors | 1.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 49.01 |
TPSA ? Topological Polar Surface Area: Calculated from |
38.91 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.94 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.25 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
2.51 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
2.08 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
2.45 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
2.25 |
Log S (ESOL):? ESOL: Topological method implemented from |
-3.35 |
Solubility | 0.119 mg/ml ; 0.000446 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.7 |
Solubility | 0.527 mg/ml ; 0.00198 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-3.76 |
Solubility | 0.0463 mg/ml ; 0.000174 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 |
-6.32 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 |
0.0 alert: heavy_metal |
Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<0.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
1.74 |
* 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 |
---|---|---|
71% | To a solution of <strong>[3430-29-3]3,5-dibromo-4-methyl-pyridin-2-ylamine</strong> (3.38 g, 12.7 mmol) in THF (60 mL) cooled to -78 C. was added n-BuLi (1.9M in pentane) (13.4 mL, 25.4 mmol) to give an orange solution. The solution was stirred at -78 C. for 1 h and then quenched with water (10 mL). The pH of the mixture was adjusted to ~12 with 10N NaOH and then extracted with CH2Cl2 (3*30 mL), dried (Na2SO4), filtered and concentrated in vacuo to give an orange oil. Purification by column chromatography on silica gel (Et2O) afforded 3-bromo-4-methyl-pyridin-2-ylamine (1.68 g, 71%) as a pale yellow solid. 1H NMR (CDCl3) delta 2.32 (s, 3H), 5.00 (br s, 2H), 6.52 (d, 1H, J=6.0 Hz), 7.84 (d, 1H, J=6.0 Hz). | |
1 g | With n-butyllithium; In tetrahydrofuran; hexane; at -78℃; for 1h; | To a THF solution (40.0 mL) of <strong>[3430-29-3]2-amino-3,5-dibromo-4-methylpyridine</strong> (2.00 g) was added n-butyllithium (1.67 mol/L hexane solution, 9.0 mL) at -78C, and the reaction mixture was stirred at the same temperature for 1 h Water was added, and the mixture was extracted twice with chloroform. The organic layer was dried over anhydrous sodium sulfate, filtered and concentrated, and the obtained residue was purified by silica gel column chromatography (solvent; hexane/ethyl acetate=85/15 - 60/40) to give the title compound (1.00 g). MS(ESI)m/z; 187,189[M+H]+ |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
58% | With bromine; In sulfuric acid; | a) Preparation of 2-Amino-3,5-dibromo-4-methylpyridine To a solution of 2-amino-4-methylpyridine(30.0 g, 0.277 mol) in 72% sulfuric acid(130 ml) was stirred with addition of bromine(21.5 ml, 0.416 mol) at 0 C. The mixture was then allowed to warm to 25 C. for 18 hrs. The reaction was then poured into ice and the ph was adjusted to 10 with 50% NaOH. The desired product precipitated out of solution and the mixture was filtered. The filtrate was extracted with methylene chloride and the organic layer was dried with MgSO4. The combined solids were purified by flash chromatography(2% MeOH/CH2Cl2) to give the desired product(42.7 g, 58%). 1H NMR (CDCl3): delta 8.08 (s, 1H), 4.95 (bs, 2H), 2.51 (s, 3H). |
54% | EXAMPLE 20 Preparation of 2-Bromo-N-((R)-3-{4-[(4-methoxy-phenyl)-(4-methyl-pyridin-3-ylmethyl)-amino]-piperidin-1-yl}-butyl)-4-methyl-nicotinamide Bromine (1.9 mL, 37.0 mmol) was added dropwise to a slurry of 2-amino-4-picoline (4.00 g, 37.0 mmol) in fuming sulfuric acid (20 mL) at 0 C. The resulting red/brown mixture was stirred at reflux for 2 h and then poured into ~200 g ice to give a yellow slurry. 10N NaOH was added slowly to the mixture until pH~12 and then the mixture was extracted with CH2Cl2 (3*50 mL), dried (Na2SO4), filtered and concentrated in vacuo to yield 3,5-dibromo-4-methyl-pyridin-2-ylamine (5.35 g, 54%) as a pale orange solid. 1H NMR (CDCl3) delta 2.51 (s, 3H), 4.94 (br s, 2H), 8.05 (s, 1H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
33% | With sodium hydroxide; dihydrogen peroxide; In sulfuric acid; water; | b) Preparation of 2-Nitro-3,5-dibromo-4-methylpyridine <strong>[3430-29-3]2-amino-3,5-dibromo-4-methylpyridine</strong> (8 g, 30.0 mmol) was cooled to 10 C., followed by the addition of concentrated sulfuric acid(10 ml). The mixture was stirred, maintaining the temperature at 10 C. for 2 hrs, with the addition of a mixture of 30% hydrogen peroxide in 30% fuming sulfuric acid(25 ml/50 ml). The mixture was allowed to warm to room temperature and stirred for an additional 48 hrs. The reaction was then added to 300 ml of water with cooling and made very slightly basic with dropwise addition of 505 NaOH solution while the temperature was maintained at 20-25 C. The product was extracted using ether(4*150 ml) and dried with MgSO4. The solution was concentrated and purified by flash chromatography(2% MeOH/CH2Cl2) to give the desired product(2.94 g, 33%). 1H NMR (CDCl3): delta 8.45 (s, 1H), 2.68 (s, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
57% | With tetrakis(triphenylphosphine) palladium(0); sodium carbonate; In 1,4-dioxane; water; at 80℃; for 16h;Inert atmosphere; | To a solution of 77 (4.4 g, 16,5 rnmoi) in 1,4-dioxane (100 rnL) was added 3,5-dimethy-4-(4,4,5,5-tetramethyi-l,3,2-dioxaborolan-2-yl)isoxazoe (4.4 g, 19.8 mmol), Na2C03(2.0 M in H?0, 25 mL, 50.0 mmol} and tetrakis(triphenyphosphine)paiadium(0) (959 mg, 0.83 mmol). The reaction mixture was purged with nitrogen and heated at 80 "C for 16 h. The mixture was diluted with EtOAc (100 mL) and washed with brine (50 mL). The organic ayer was dried over NazS04, and filtered. The fitrate was concentrated and then purified by chromatography (silica gel, 0-60% ethyi acetate/hexanes) to afford 78 (2.64 g, 57%) as an off-white solid: H N R (300 MHz, DMSO-d6) delta 7.71 (s, 1H), 6.32 (s, 2H), 2.22 (s, 3H), 2.08 (s, 3H), 2.02 (s, 3H). |
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