(E)-(S)-4-(tert-Butyl-dimethyl-silanyloxy)-4-((4S,5S)-5-methanesulfonyloxymethyl-2,2-dimethyl-[1,3]dioxolan-4-yl)-but-2-enoic acid ethyl ester 在
臭氧 、
二甲基硫 作用下,
以
乙酸乙酯 为溶剂,
以79%的产率得到Methanesulfonic acid (4S,5S)-5-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-2-oxo-ethyl]-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl ester