Ethyl Acetate → HCID 70293374, compound

Participants

Reaction Steps

A solution of (3S)-(2,2,2-trichloroethyl) 3-[(2S)-5-benzyloxycarbonyl-2-isocyanatopentanoyl]oxyhexadecanoate (0.33 g) and 2-(methylamino)pyridine (113 mg) in dichloromethane (5 ml) was stirred at room temperature overnight. The mixture was poured into ethyl acetate (20 ml), and washed with aqueous 1 N-hydrochloric acid (20 ml×2), saturated sodium bicarbonate (20 ml), and brine (20 ml). Then, the solution was dried over magnesium sulfate, and evaporated to dryness. The residue was chromatographed on a silica gel to give (3S)-(2,2,2-trichloroethyl) 3-[(2S)-5-benzyloxycarbonyl-2-{3-methyl-3-(2-pyridyl)ureido}pentanoyl]oxyhexadecanoate (0.25 g).

Provenance & Evidence