Structure of 75416-51-2
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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. : | 75416-51-2 |
Formula : | C9H10BrN |
M.W : | 212.09 |
SMILES Code : | BrC1=CC=CC2=C1CNCC2 |
MDL No. : | MFCD10001500 |
InChI Key : | KHWGHUZYXQPIKA-UHFFFAOYSA-N |
Pubchem ID : | 12630420 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 11 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.33 |
Num. rotatable bonds | 0 |
Num. H-bond acceptors | 1.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 53.48 |
TPSA ? Topological Polar Surface Area: Calculated from |
12.03 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
2.23 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.02 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.56 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
2.51 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
3.12 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
2.29 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.83 |
Solubility | 0.313 mg/ml ; 0.00148 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-1.9 |
Solubility | 2.67 mg/ml ; 0.0126 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-4.14 |
Solubility | 0.0154 mg/ml ; 0.0000728 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) |
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) |
Yes |
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 |
-6.16 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 |
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) |
1.63 |
* 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 |
---|---|---|
To a mixture of 6-bromo-1,2,3,4-tetrahydroisoquinoline and 8-bromo-1,2,3,4-tetrahydroisoquinoline (22.1 mmol) in THF (100 mL) was added DIPEA (22.1 mmol) and BOC2O (24 mmol). The reaction mixture was allowed to stir at rt over the weekend and then concentrated. Water (5 mL) was added to the residue and the pH was adjusted to 2 by the addition of 1N H3PO4. The mixture was extracted with EtOAc. The organic solutions were combined, dried over Na2SO4, filtered and concentrated. The residue was purified by column chromatography to give tert-butyl 6-bromo-3,4-dihydroisoquinoline-2(1H)-carboxylate and tert-butyl 8-bromo-3,4-dihydroisoquinoline-2(1H)-carboxylate (6.04 g, 88%) as a yellow oil. | ||
Dry THF (50 mL) and DIPEA (1.3 mL, 7.5 mmol) were added followed by BOC- anhydride (1.8 g, 8.2 mmol). The mixture was stirred overnight at RT. The volatiles were evaporated and the residue was taken up in water. The pH was adjusted to 2 with IM phosphoric acid and the product was extracted twice with EtOAc. The combined organic phases were washed with brine made slightly alkaline with saturated sodium bicarbonate, dried, filtered and concentrated. The crude product was purified by column chromatography with EtOAc-heptanes (1:50 through 1:20) to give 2.24 g (96%) of a 3:1 mixture of the title product and fert-butyl 8-bromo-3,4-dihydroisoquinoline-2(lH)- carboxylate. EPO <DP n="26"/>LC-MS m/z 256/258 (M-56);1H NMR (CDCl3) delta 7.31 (dd, IH), 7.30 (br s, IH), 6.98 (d, IH), 4.52 (s, 2H), 3.63 (t, 2H), 2.81 (t, 2H) and 1.50 (s, 9H) ppm (6-isomer).1H NMR (CDCl3) delta 7.42 (dd, IH), 7.12-7.01 (m's, 2H), 4.55 (s, 2H), 3.64 (t, 2H), 2.84 (t, 2H) and 1.51 (s, 9H) ppm (8-isomerV | ||
Dry THF (50 mL) and DIPEA (1.3 mL, 7.5 mmol) were added followed by BOC- anhydride (1.8 g, 8.2 mmol). The mixture was stirred at RT overnight. The volatiles were i5 evaporated and the residue was taken up in water. The pH was adjusted to 2 with IM phosphoric acid and the product was extracted twice with EtOAc. The combined organic phases were washed with brine made slightly alkaline with saturated sodium bicarbonate, dried, filtered and concentrated. The crude product was purified by column chromatography with EtOAc-heptanes (1:50 through 1:20) to give 2.24 g (96%) of a 3:120 mixture of the title product and tert-butyl 8-bromo-3,4-dihydroisoquinoline-2(lH)- carboxylate. LC-MS mlz 256, 258 (M-56);1H NMR (CDCl3) delta 7.31 (dd, IH), 7.30 (br s, IH), 6.98 (d, IH), 4.52 (s, 2H), 3.63 (t, 2H),2.81 (t, 2H) and 1.50 (s, 9H) ppm (6-isomer).25 11HH N NMMRR ( (CCDDCCll33)) delta delta 77..4422 ( (dddd,, I IHH)),, 77..112-7.01 (m, 2H), 4.55 (s, 2H), 3.64 (t, 2H), 2.84 (t, 2H) and 1.51 (s, 9H) ppm (8-isomer). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
95% | With triethylamine; In dichloromethane; at 0 - 20℃; for 0.5h; | Boc2O (25.73 g, 117.88 mmol) was added dropwise to a solution of intermediate 21 (25.00 g, 117.88 mmol) and TEA (32.83 mL, 236.00 mmol) in DCM (300 mL) at 0 °C. The resulting mixture was stirred at room temperature for 30 minutes. Sat. citric acid was added to quench the reaction and layers were separated. The organic layer was washed with brine, dried over Mg504, filtered and evaporated in vacuo. The crude residue was purified by silica gel column (mobile phase: Petroleum ether/EtOAc, 3/1, v/v) to give 35 g of intermediate 22 (95percent yield). |
80% | With sodium hydrogencarbonate; In tetrahydrofuran; at 20℃; | 8-Bromo-1,2,3,4-tetrahydroisoquinoline 14.1 (200 mg, 0.804 mmol) was suspended in tetrahydrofuran (4 ml) and saturated sodium bicarbonate (2 ml) then di-t-butyl dicarbonate (263 mg, 1.21 mmol) was added as a solution in THF (2 ml) and the mixture was stirred atRT for 42 h. The reaction mixture was poured into water and extracted three times with ethyl acetate. The organic extract was dried over sodium sulfate, filtered and evaporated. The residue was purified via flash silica chromatography (heptane I DCM 0-80percent) to provide compound 14.2 (200 mg, 80percent) as a colourless oil. 1H NMR (ODd3, 400 MHz) O 1.30 (5, 9H), 2.82 (m, 2H), 3.63 (m, 2H), 4.60 (m, 2H), 7.05 (m, 2H), 7.39 (d, 1H). UPLC-MS (shortbasic) rt 1.01 (255, 257 [M-tBu+H]), 96percent pure. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98% | NaBH3CN (30.20 g, 480.64 mmol) was added to a mixture of <strong>[63927-22-0]8-bromoisoquinoline</strong>(20.00 g, 96.13 mmol) in MeOH (300 mL) at 0 °C. The resulting mixture was stirredfor 10 minutes and Boron trifluoride diethyl etherate (68.22 g, 480.64 mmol) was added dropwise at 0 °C. The resulting mixture was stirred for 1 hour at 0 °C and then refluxed for 4 hours. Sat. Na2CO3 (5 mL) was added and solvent was concentrated under reduced pressure. The remaining liquid was poured into water and extracted withCH2C12. The organic layer was washed with brine, dried over Mg504, filtered and evaporated in vacuo to give 20 g of intermediate 21(98percent yield) which was used in the next step without further purification. |
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