[4-((3R,5aR,5bR,11aS,13bS)-5a,5b,8,8,11a,13b-Hexamethyl-icosahydro-cyclopenta[a]chrysen-3-yl)-pentylidene]-triphenyl-λ
5-phosphane 在
二苯二硫醚 作用下,
以
环己烷 为溶剂,
反应 0.5h,
生成
(S)-4-[(E)-5-((3R,5aR,5bR,11aS,13bS)-5a,5b,8,8,11a,13b-Hexamethyl-icosahydro-cyclopenta[a]chrysen-3-yl)-hex-1-enyl]-2,2-dimethyl-[1,3]dioxolane