Sodium triacetoxyborohydride → 7-(2-hydroxyethyl)-N-(3-methyl-1-((6-methylpyridin-2-yl)methyl)-1H-indazol-4-yl)imidazo[1,2-a]pyridine-3-carboxamide

Participants

Reaction Steps

A solution of N-(3-methyl-1-((6-methylpyridin-2-yl)methyl)-1H-indazol-4-yl)-7-(2-oxoethyl)imidazo[1,2-a]pyridine-3-carboxamide (5 mg, 0.011 mmol) in 0.5 mL absolute EtOH was treated at ambient temperature with 3 equivalents of sodium triacetoxyborohydride. The reaction mixture was stirred overnight at ambient temperature, after which another 10 equivalents reducing agent were added. Stirring was continued until starting material was consumed. The reaction was quenched with excess saturated aqueous sodium bicarbonate solution, and extracted with DCM and EtOAc. The combined organic extracts were dried over anhydrous sodium sulfate, and concentrated. The crude product was subjected to preparative thin-layer chromatography on silica with 5% MeOH/DCM as eluent to afford 3.7 mg of product as a white solid. MS (ES+APCI) m/z=441 (M+H) detected.

Provenance & Evidence