乙酸酐 、
5-Acetamino-6,7-carbonato-9-O-tert.butyl-dimethylsilyl-3,5-didesoxy-D-glycero-D-galakto-2-keto-nononsaeure-γ-lacton-diethylmercaptal 在
吡啶 作用下,
反应 10.0h,
以65%的产率得到5-Acetamino-8-O-acetyl-6,7-carbonato-9-O-tert.butyl-dimethylsilyl-3,5-didesoxy-D-glycero-D-galakto-2-keto-nononsaeure-γ-lacton-diethylmercaptal