Hydrochloric Acid → Bcl-xL antagonist 2

HRID 1518267Notes

Reaction equation

[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[NH:10][C:11]([C:13]1[CH:14]=[CH:15][CH:16]=[C:17]2[C:22]=1[CH2:21][N:20]([C:23]1[S:24][CH:25]=[C:26]([C:28]([O:30]C)=[O:29])[N:27]=1)[CH2:19][CH2:18]2)=[O:12].[OH-].[Na+].Cl>C1COCC1.CO>[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[NH:10][C:11]([C:13]1[CH:14]=[CH:15][CH:16]=[C:17]2[C:22]=1[CH2:21][N:20]([C:23]1[S:24][CH:25]=[C:26]([C:28]([OH:30])=[O:29])[N:27]=1)[CH2:19][CH2:18]2)=[O:12]

Participants

Conditions

Temperature: 50 °C

Procedure

The title compound 2-(8-(Benzo[d]thiazol-2-ylcarbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)thiazole-4-carboxylic acid (1) was prepared by following procedure: To a solution of methyl 2-(8-(benzo[d]thiazol-2-ylcarbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)thiazole-4-carboxylate (1C) (180 mg, 4 mmol) in THF (4 mL) and MeOH (2 mL) was added 2N NaOH (2 mL). The reaction mixture was stirred at 50° C. for 4 hours and neutralized by slowly adding 5% aq. HCl. The precipitate was then filtered, dried, dissolved in DMSO/MeOH (1:1) and purified by column chromatography on silica gel to provide the desired product 2-(8-(Benzo[d]thiazol-2-ylcarbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)thiazole-4-carboxylic acid (1): 1H NMR (300 MHz, DMSO-D6) δ ppm 7.99 (1H, d), 7.76 (1H, d), 7.69 (1H, dd), 7.52 (1H, s), 7.38 (4H, m), 4.91 (2H, s), 3.75 (2H, t), 3.05 (2H, t). MS (ESI(+)): m/z 437 (M+H).

Workup

customThe title compound 2-(8-(Benzo[d]thiazol-2-ylcarbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)thiazole-4-carboxylic acid (1) was prepared
filtrationThe precipitate was then filtered
customdried
dissolutiondissolved in DMSO/MeOH (1:1)
custompurified by column chromatography on silica gel

Sources & evidence

ORD record: ord-ea44c4793833462b842b8a4208f8db82
Source dataset: uspto-grants-2012_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08232273B2

Reaction notes

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