Structure of 57381-43-8
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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. : | 57381-43-8 |
Formula : | C8H6Br2O2 |
M.W : | 293.94 |
SMILES Code : | O=C(OC)C1=CC(Br)=CC=C1Br |
MDL No. : | MFCD00144757 |
InChI Key : | RBCUIRIGTNHLPS-UHFFFAOYSA-N |
Pubchem ID : | 554523 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 12 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.12 |
Num. rotatable bonds | 2 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 53.12 |
TPSA ? Topological Polar Surface Area: Calculated from |
26.3 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
2.55 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
4.18 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
3.0 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
3.38 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
3.05 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
3.23 |
Log S (ESOL):? ESOL: Topological method implemented from |
-4.53 |
Solubility | 0.0086 mg/ml ; 0.0000293 mol/l |
Class? Solubility class: Log S scale |
Moderately soluble |
Log S (Ali)? Ali: Topological method implemented from |
-4.44 |
Solubility | 0.0106 mg/ml ; 0.0000362 mol/l |
Class? Solubility class: Log S scale |
Moderately soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-4.17 |
Solubility | 0.0199 mg/ml ; 0.0000676 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) |
Yes |
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 |
-5.13 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 |
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) |
1.72 |
* 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 |
---|---|---|
31% | With caesium carbonate;tris-(dibenzylideneacetone)dipalladium(0); 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; In toluene; at 110℃; for 20h; | [150] To a dried 25 mL flask was introduced 3-tert-butyl-1-(2-methylphenyl)-1H-pyrazol- 5-amine (intermediate C, 220 mg, 0.96 MMOL), <strong>[57381-43-8]methyl 2,5-dibromobenzoate</strong> (235 mg, 0.80 MMOL), Pd2 (dba) 3 (36.6 mg, 0.04 MMOL), BINAP (49.8 mg, 0.08 MMOL), and CS2CO3 (365 mg, 1.12 MMOL). The flask was degassed followed by addition of toluene (1 mL), and the mixture was then heated to 110°C for 20 h. The mixture was cooled to rt, and diluted with ethyl acetate. The solid was filtered off, and the solvent was removed under reduced pressure. The residue was redissolved in METHANOL/THF (4: 1, V/V) and filtered though a CB-SILICA plug. HPLC purification using a gradient elution from 10percent to 90percent acetonitrile in water afforded 110 MG (31 percent) of the TITLE COMPOUND.APOS;H NMR (300 MHZ, CD2CI2) 5 9.21 (s, 1 H), 7.41 (d, 1 H), 7.20-7. 30 (m, 5 H), 7.10 (d, 1 H), 6.09 (s, 1 H), 3.72 (s, 3 H), 2.04 (s, 3 H), 1.30 (s, 9 H). ES-MS M/Z 444.1 (MH+) ; HPLC RT (min) 4.30. |
31% | With racemic-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl; caesium carbonate;tris-(dibenzylideneacetone)dipalladium(0); In toluene; at 110℃; for 20h; | To a dried 25 mL flask was introduced 3-tert-butyl-1-(2-methylphenyl)-1 H-pyrazol-5-amine (220 mg, 0.96 mmol), <strong>[57381-43-8]methyl 2,5-dibromobenzoate</strong> (235 mg, 0.80 mmol), Pd2(dba)3 (36.6 mg, 0.04 mmol), BINAP (49.8 mg, 0.08 mmol), and Cs2CO3 (365 mg, 1.12 mmol). The flask was degassed followed by addition of toluene (1 mL), and the mixture was then heated to 110°C for 20 h. The mixture was cooled to rt, and diluted with ethyl acetate. The solid was filtered off, and the solvent was removed under reduced pressure. The residue was redissolved in methanol/THF (4: 1, v/v) and filtered though a C8-silica plug. HPLC purification using a gradient elution from 10percent to 90percent acetonitrile in water afforded 110 mg (31 percent) of the title compound. 1H NMR (300 MHz, CD2Cl2) No. 9.21 (s, 1 H), 7.41 (d, 1 H), 7.20-7.30 (m, 5 H), 7.10 (d, 1 H), 6.09 (s, 1 H), 3.72 (s, 3 H), 2.04 (s, 3 H), 1.30 (s, 9 H). ES-MS m/z 444.1 (MH+); HPLC RT (min) 4.30. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
31% | With caesium carbonate;tris-(dibenzylideneacetone)dipalladium(0); 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; In toluene; at 118℃; | Step 3: Preparation of 5-Bromo-2-r3-cyclopropyl-l-(3-methyl-pyridin-2-yl)-lH-pyrazol-5- ylaminol-benzoic acid methyl ester; To a mixture of 3-cyclopropyl-l-(3-methyl-pyridin-2-yl)-lH-pyrazol-5-amine (1.0 g, 4.667 mmol) and <strong>[57381-43-8]2,5-dibromo-benzoic acid methyl ester</strong> (1.25 g, 4.243 mmol) in toluene (20 mL) was added BINAP (0.264 g, 0.424 mmol), followed by Pd2(dba)3 (0.233 g, 0.255 mmol). To the mixture was added cesium carbonate (1.94 g, 5.94 mmol) and the suspension was heated at 118 °C overnight and cooled to rt. The cooled reaction mixture was diluted with ethyl acetate and filtered through Celite and concentrated. The product (0.61 g, 31percent) was isolated by column chromatography (25percent ethyl acetate/ hexanes), then on the HPLC (20 to 90 percent acetonitrile). MS m/z 427.1 (M+); HPLC RT (min) 4.06 {method (A)}. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
43.4% | With caesium carbonate;tris-(dibenzylideneacetone)dipalladium(0); 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; In toluene; at 110℃; | Step 2: Preparation of 5-bromo-2-r3-f3-ethylphenyl)-l-(3-trifluoromethylpyridin-2-yl)-lH- PVrazol-5-ylaminol-benzoic acid methyl ester; EPO <DP n="102"/>To a solution of 3-(3-ethylphenyl)-l-(3-trifluoromethyl-pyridin-2-yl)-lH-pyrazol-5- amine (600 mg, 1.44 mmol) and <strong>[57381-43-8]2,5-dibromo-benzoic acid methyl ester</strong> (552 mg, 1.88 mmol) in toluene (8 mL) was added BESfAP (89.93 mg, 0.14 mmol), Pd2(dba)3 (79.36 mg, 0.087 mmol) and cesium carbonate (659 mg, 2.02 mmol). The suspension was heated at 110 0C overnight and then cooled to rt. Column chromatography purification (hexane then 10percent EtOAc/hexane) afforded pure product (342 mg, 43.4percent). 1H NMR (400 MHz, CD3OD) 6 ppm 10.70 (IH, s), 8.87-8.86 (IH, d, J = 6.4 Hz), 8.41-8.39 (IH, d, J = 9.6 Hz), 8.02 (IH, s), 7.72-7.79 (7H, m), 6.80 (IH, s), 3.90 (3H, s), 2.73-2.68 (2H, q, J = 7.6 Hz), 1.31-1.23 (3H, t, J = 14.4 Hz). |
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