Potassium Carbonate → (S)-2-(4-amino-3-chloro-5-trifluoromethyl-benzyl)-1-(4-dimethylamino-piperidin-1-yl)-4-[4-(2-oxo-1,2,4,5-tetrahydro-1,3-benzodiazepin-3-yl)-piperidin-1-yl]-butan-1,4-dione

Participants

Reaction Steps

80.3 mg (0.25 mmol) TBTU, 0.21 mL (1.2 mmol) ethyldiisopropylamine and 38.5 mg (0.3 mmol) dimethyl-piperidin-4-yl-amine were added to a solution of 130 mg (0.24 mmol) (S)-2-(4-amino-3-chloro-5-trifluoromethyl-benzyl)-4-oxo-4-[4-(2-oxo-1,2,4,5-tetrahydro-1,3-benzodiazepin-3-yl)-piperidin-1-yl]-butanoic acid in 10 mL DMF and the reaction mixture was stirred overnight at RT. The reaction solution was poured into 80 mL 15% K2CO3 solution, stirred for 10 min at RT, the precipitated substance was suction filtered, washed with 5 mL water and dried in the air over the weekend. Then the product was purified by chromatography using HPLC.

Provenance & Evidence