Triethylamine → N-[(1S,2S,4R)-1-Benzyl-4-(3,3-dimethylbutylcarbamoyl)-2-hydroxypentyl]-3-(2-oxopyrrolidin-1-yl)-5-phenoxybenzamide

Participants

Reaction Steps

A mixture of N-[(1S,2S,4R)-1-benzyl-4-(3,3-dimethylbutylcarbamoyl)-2-hydroxypentyl]-3-hydroxy-5-(2-oxopyrrolidin-1-yl)benzamide (E2) (52 mg, 0.1 mmol), benzeneboronic acid (25 mg, 0.2 mmol), cupric acetate (18 mg, 0.1 mmol) and powdered 4 A molecular sieves in dichloromethane (1 ml) were treated with triethylamine (0.070 ml, 0.5 mmol). After stirring for 40 hrs at room temperature, the mixture was partitioned between ethyl acetate and 2N HCl and the product was extracted into ethyl acetate. The extracts were washed with sodium bicarbonate solution and brine and then dried (Na2SO4) and concentrated. Chromatography on silica gel (elution with ethyl acetate) gave E11 as a white solid (24 mg).

Provenance & Evidence