(E)-(4S,5R,6S)-6-{(4R,6S)-6-[(1R,2S,4S)-6-Benzyloxy-2-methoxy-4-(4-methoxy-benzyloxy)-1-methyl-hexyl]-2,2-dimethyl-[1,3]dioxan-4-yl}-5-(tert-butyl-dimethyl-silanyloxy)-4-methyl-hept-2-enoic acid ethyl ester 在
四氧化锇 、
N-甲基吲哚酮 作用下,
以
水 、
丙酮 、
叔丁醇 为溶剂,
以71%的产率得到(4S,5R,6S)-6-{(4R,6S)-6-[(1R,2S,4S)-6-Benzyloxy-2-methoxy-4-(4-methoxy-benzyloxy)-1-methyl-hexyl]-2,2-dimethyl-[1,3]dioxan-4-yl}-5-(tert-butyl-dimethyl-silanyloxy)-2,3-dihydroxy-4-methyl-heptanoic acid ethyl ester