Acetic Anhydride → 2-(Acetylamino)-4-(t-butyloxycarbonylamino)-1,5-diphenyl-3-hydroxypentane

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Reaction Steps

A solution of 20 mg of the resultant compound of Example 11 and 0.05 ml of triethylamine in 1 ml of dichloromethane was cooled to 0° C. and treated with 0.01 ml of acetic anhydride. After 30 min, the solution was partitioned between water and dichloromethane, and the organic phase was dried over Na2SO4 and concentrated to give 23 mg (100%) of the desired compound (Rf 0.5, 10% methanol in chloroform). Mass spectrum: (M+H)+ =413.

Provenance & Evidence