(1R,3R,4S,6R,7R)-7-Hydroxy-6-hydroxymethyl-3-methoxy-2-oxa-5-aza-bicyclo[2.2.1]heptane-5-carboxylic acid benzyl ester 、
苯甲酰氯 在
叔丁基二甲基氯硅烷 作用下,
以
吡啶 为溶剂,
反应 4.0h,
以84%的产率得到(1R,3S,4S,6R,7R)-7-Benzyloxy-6-t-butyldimethylsilyloxymethyl-3-methoxy-2-oxa-5-aza-bicyclo[2.2.1]heptane-5-carboxylic acid benzyl ester