(8R,9S,10R,13S,14S,17R)-17-[(E)-2-bromoethenyl]-13-methylspiro[1,2,4,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-3,2'-1,3-dioxolane]-17-ol 、 (8R,9S,13S,14S,17R)-17-[(E)-2-bromoethenyl]-13-methylspiro[1,2,4,6,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-3,2'-1,3-dioxolane]-17-ol 、
草酸 生成
17α-(E-2-Bromovinyl)-17β-hydroxy-4-estren-3-one