Structure of 893620-44-5
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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. : | 893620-44-5 |
Formula : | C8H5BrFNO |
M.W : | 230.03 |
SMILES Code : | O=C1NC2=C(C=C(F)C(Br)=C2)C1 |
MDL No. : | MFCD16250437 |
InChI Key : | YWZPDMAAXMNKIP-UHFFFAOYSA-N |
Pubchem ID : | 58484246 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H317-H319 |
Precautionary Statements: | P280-P305+P351+P338 |
Num. heavy atoms | 12 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.12 |
Num. rotatable bonds | 0 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 49.39 |
TPSA ? Topological Polar Surface Area: Calculated from |
29.1 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.81 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.56 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.93 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
2.29 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
2.92 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
2.1 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.62 |
Solubility | 0.553 mg/ml ; 0.0024 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-1.78 |
Solubility | 3.81 mg/ml ; 0.0166 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-4.03 |
Solubility | 0.0216 mg/ml ; 0.0000938 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) |
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 |
-6.6 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<1.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
1.83 |
* 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 |
---|---|---|
The crude product obtained is combined with 700 mg LiCl, 150 muL water and 50 mL DMSO and stirred for 3 h at 1000C. Then the reaction mixture is cooled to RT, combined with saturated saline solution and extracted repeatedly with EtOAc. The combined organic phases are dried, filtered and freed from the volatile constituents in vacuo. 20 mL acetic acid and 2 g iron powder are added to the remaining mixture which is then heated to 1000C until 5-fluoro-6-bromo-indolinone has formed. The reaction mixture is freed from the volatile constituents, combined with EtOAc, filtered and the product is isolated by normal phase chromatography. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
7.87 g | d) 6-Bromo-5-fluoro-1 ,3-trimethylindolin-2-one To a suspension of NaH (5.04 g, 126 mmol) in tetrahydrofuran (105 ml) under an argon atmosphere was added <strong>[893620-44-5]6-bromo-5-fluoroindolin-2-one</strong> (7.24 g, 31.5 mmol) in portions. After gas evolution has ceased methyl iodide (17.9 g, 7.88 ml, 126 mmol) was added dropwise within 50 minutes by means of a syringe pump (exothermic reaction), keeping the temperature of the reaction mixture between 24C and 26C. The reaction mixture was kept at room temperature for 4 hours and then carefully quenched with aqueous ammonium chloride solution. The reaction mixture was diluted with tert-butyl methyl ether, water and saturated aqueous ammonium chloride solution. The aqueous phase was extracted with tert-butyl methyl ether, the combined organic phases were washed with saturated aqueous ammonium chloride and dried over sodium sulfate. The solvent was evaporated and the residue was triturated with heptane to give the title compound as light brown solid (7.87 g). 1H NMR (CDC13, 400 MHz): (ppm) = 7.02-6.97 (m, 2H), 3.19 (s, 3H), 1.36 (s, 6H). | |
7.87 g | With sodium hydride; In tetrahydrofuran; at 20 - 26℃; for 4.83333h;Inert atmosphere; | d) 6-Bromo-5-fluoro-1,3,3-trimethylindolin-2-one To a suspension of NaH (5.04 g, 126 mmol) in tetrahydrofuran (105 ml) 6-bromo-5- fluoroindolin-2-one (7.24 g, 31.5 mmol) was added portionwise under an argon atmosphere. After gas evolution had ceased methyl iodide (17.9 g, 7.88 ml, 126 mmol) was added dropwise within 50 minutes by means of a syringe pump (exothermic reaction), keeping the temperature of the reaction mixture between 24 C and 26 C. The reaction mixture was kept at roomtemperature for 4 hours and then carefully quenched with aqueous ammonium chloride solution. The reaction mixture was diluted with tert-butyl methyl ether, water and saturated aqueous ammonium chloride solution. The aqueous phase was extracted with tert-butyl methyl ether, the combined organic phases were washed with saturated aqueous ammonium chloride and dried over sodium sulfate. The solvent was evaporated and the residue was triturated with heptane to give the title compound as light brown solid (7.87 g).MS ESI (m/z): 272.1, 274.1 [(M+H)i.H NMR (CDC13, 400 MHz): (ppm) = 7.02-6.97 (m, 2H), 3.19 (s, 3H), 1.36 (s, 6H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
3.6 g | a) 6-Bromo-5-fluoro-3,3-dimethylindolin-2-one To a solution of potassium tert-butoxide (9.27 g, 82.6 mmol) in dry THF (50 ml) under icebath cooling was added <strong>[893620-44-5]6-bromo-5-fluoroindolin-2-one</strong> (example 20c, 3.8 g, 16.5 mmol) in portions, followed by copper (I) bromide-dimethyl sulfide complex (340 mg, 1.65 mmol). After cooling to 2C methyl iodide (4.92 g, 2.17 ml, 34.7 mmol) was added slowly over a period of 30 minutes. The reaction mixture was warmed to room temperature, stirred for 16 hours, then cooled to 0C and carefully quenched with saturated ammonium chloride solution. The mixture was diluted with tert-butyl methyl ether and water. The aqueous phase was extracted with tert-butyl methyl ether, the combined organic phases were dried over sodium sulfate, the solvent was evaporated and the residue purified by silica gel chromatography using ethyl acetate/ heptane as eluent and followed by trituration with diethyl ether. The title compound was obtained as yellow solid (3.6 g). MS ESI (m/z): 258.0/ 260.0 [(M+H)+]. 1H NMR (CDCI3, 400 MHz): (ppm) = 10.44 (bs, 1H), 7.48-7.45 (m, 1H), 7.05-7.04 (m, 1H), 1.25 (s, 6H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
c) 6-Bromo-5-fluoroindolin-2-one A suspension of (4-bromo-5-fluoro-2-nitrophenyl)-acetic acid/ (2-bromo-5-fluoro-4-nitro- phenyl)-acetic acid (2.6: 1 mixture, 37.3 g, 134 mmol) and iron (30.0 g, 537 mmol) in acetic acid (671 ml) was heated to 100C for 7 hours and then cooled to room temperature. Remaining elemental iron was removed with a magnetic rod. Ice water (900 ml) was added to the reaction mixture. The precipitate was filtered off, washed four times with water and then suspended in an ice-cold aqueous solution of 25% HC1 (300 ml) and cone. HC1 (50 ml). After stirring for 10 minutes the precipitate was filtered off and washed four times with water. The precipitate was suspended in a mixture of 1 M aqueous Na2C03 (400 ml) solution and 0.1 M NaOH (100 ml) and stirred for 40 minutes. The precipitate was filtered off and washed four times with 0.1 M aqueous NaOH, three times with water and once with diisopropylether to give title compound as light grey solid (20.5 g). MS ESI (m/z): 228.0/ 230.0 [(M-H)"]. 1H NMR (DMSO-D6, 400 MHz): (ppm) = 10.47 (bs, 1H), 7.31-7.28 (m, 1H), 7.01-6.99 (m, 1H), 3.49 (s, 2H). | ||
20.5 g | a) 2-(4-Bromo-5-fluoro-2-nitro-phenyl)-malonic acid dimethyl ester/ 2-(2-Bromo-5-fluoro-4-nitro-phenyl)-malonic acid dimethyl ester A suspension of NaH (60 % in mineral oil, 20.2 g, 504 mmol) in dioxane (233 ml) was cooled to11 C. A solution of 1-bromo-2,4-difluoro-5-nitrobenzene (50 g, 26.5 ml, 210 mmol) anddimethyl malonate (33.3 g, 28.9 ml, 242 mmol) in dioxane (467 ml) was carefully added at 11 - 14 C within 45 minutes (gas evolution). After completion of the addition the reaction mixture was kept at 12 C for another hour and then warmed to room temperature. After 16 hours the reaction mixture was cooled to 10 C and 100 ml saturated aqueous ammonium chloride solutionwas added. The reaction mixture was diluted with tert-butyl methyl ether, water and saturated aqueous ammonium chloride solution. The aqueous phase was extracted with tert-butyl methyl ether, the combined organic phases were washed with saturated aqueous ammonium chloride solution and brine and dried over sodium sulfate. The solvent was evaporated and the residue purified by silica gel chromatography using ethyl acetate heptane as eluent. The title compoundswere obtained as yellow liquid (53.7 g) as a 2.6:1 mixture and used for the next reaction without further purification.. A mixture of 2-(4-bromo-5 -fluoro-2-nitro-phenyl)-malonic acid dimethyl ester 2-(2-bromo-5- fluoro-4-nitro-phenyl)-malonic acid dimethyl ester (2.6:1 mixture, 53.7 g, 153 mmol) and 6 Maqueous hydrochloric acid (767 ml) was heated to reflux for 7 hours and then cooled to 5 C. The precipitate was filtered, washed with water and with n-pentane and then coevaporated 3 times with toluene to give 25.9 g of a mixture of the title compounds as white solid. The mother liquor was extracted with ethyl acetate and the combined organic phases dried over sodium sulfate. The solvent was evaporated and the residue triturated with n-pentane and then coevaporated with toluene to give 11.42 g of a mixture of the title compounds as an off-white solid. This material was combined with the first crop to give a total of 37.32 g of the title compounds as a 2.6 :1 mixture which was used for the next reaction without further purification.A suspension of (4-bromo-5-fluoro-2-nitrophenyl)-acetic acid/ (2-bromo-5-fluoro-4-nitro- phenyl)-acetic acid (2.6:1 mixture, 37.3 g, 134 mmol) and iron (30.0 g, 537 mmol) in acetic acid (671 ml) was heated to 100 C for 7 hours and then cooled to room temperature. Remaining elemental iron was removed with a magnetic rod. Ice water (900 ml) was added to the reaction mixture. The precipitate was filtered off, washed four times with water and then suspended in anice-cold aqueous solution of 25 % HC1 (300 ml) and conc. HC1 (50 ml). After stuffing for 10 minutes the precipitate was filtered off and washed four times with water.The precipitate was suspended in a mixture of 1 M aqueous Na2CO3 (400 ml) solution and 0.1 M NaOH (100 ml) and stirred for 40 minutes. The precipitate was filtered off and washed four times with 0.1 M aqueous NaOH, three times with water and once with diisopropylether to givetitle compound as light grey solid (20.5 g). MS ESI (m/z): 228.0/ 230.0 [(M-H)i.1H NMR (DMSO-D6, 400 MHz): (ppm) = 10.47 (bs, 1H), 7.3 1-7.28 (m, 1H), 7.01-6.99 (m, 1H), 3.49 (s, 2H). |
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