反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
产物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
To a solution of 7-acetyl-4-(2-methyl-3-(4-oxoquinazolin-3(4H)-yl)phenyl)-9H-pyrido[3,4-b]indole-1-carboxamide (45 mg, 0.092 mmol) in tetrahydrofuran (10 mL) at 0° C. was added methylmagnesium bromide (0.154 mL, 0.462 mmol). The mixture was stirred at room temperature for 30 min. Additional methylmagnesium bromide (0.100 mL, 0.300 mmol) was added at 0° C., and the mixture was stirred at room temperature for another 30 min. The reaction was quenched with water (10 mL) and the mixture was extracted with ethyl acetate (3×30 mL). The combined extract was washed with brine (25 mL) and dried over anhydrous MgSO4. The organic solution was concentrated under vacuum, and the residue was purified by reverse phase HPLC. The correct fraction was concentrated under vacuum, basified with saturated NaHCO3 solution, and extracted with ethyl acetate (3×35 mL). The combined extract was washed with brine (30 mL) and dried over anhydrous MgSO4. Removal of solvent under vacuum provided the desired product (20.9 mg, 0.041 mmol, 44.1% yield) as a pale yellow solid. LCMS (M+H)+=504.0. 1H NMR (500 MHz, DMSO-d6) (recognizable peaks for the major atropisomer) δ: 11.74 (s, 1H), 8.44 (s, 1H), 8.23 (s, 1H), 8.30 (s, 1H), 7.98 (m, 1H), 7.92 (m, 1H), 7.80 (m, 1H), 7.75 (m, 1H), 7.58 (m, 1H), 7.24 (m, 1H), 5.12 (s, 1H), 1.83 (s, 3H), 1.50 (s, 6H).
WORKUP
后处理
- stirringthe mixture was stirred at room temperature for another 30 min
- customThe reaction was quenched with water (10 mL)
- extractionthe mixture was extracted with ethyl acetate (3×30 mL)
- extractionThe combined extract
- washwas washed with brine (25 mL)
- dry with materialdried over anhydrous MgSO4
- concentrationThe organic solution was concentrated under vacuum
- customthe residue was purified by reverse phase HPLC
- concentrationThe correct fraction was concentrated under vacuum
- extractionextracted with ethyl acetate (3×35 mL)
- extractionThe combined extract
- washwas washed with brine (30 mL)
- dry with materialdried over anhydrous MgSO4
- customRemoval of solvent under vacuum