(Z)-(2R,3S,5S,8S,9S,10S)-2-Bromo-9-(tert-butyl-dimethyl-silanyloxy)-11-(tert-butyl-diphenyl-silanyloxy)-3,5-dihydroxy-2,8,10-trimethyl-undec-6-enoic acid ethyl ester 在
三乙基硼 、 camphor-10-sulfonic acid 、
三正丁基氢锡 作用下,
以
甲苯 为溶剂,
生成 (S)-2-{(4S,6S)-6-[(Z)-(3S,4S,5S)-4-(tert-Butyl-dimethyl-silanyloxy)-6-(tert-butyl-diphenyl-silanyloxy)-3,5-dimethyl-hex-1-enyl]-2,2-dimethyl-[1,3]dioxan-4-yl}-propionic acid ethyl ester