(8R,9S,13S,14S)-13-methyl-17-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-3-yl pent-4-enoate 在
[(Tio-NHC-DiPP)
2RuCl
2(Hov)] 作用下,
反应 4.0h,
以80%的产率得到bis((13S)-13-methyl-17-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-3-yl) oct-4-enedioate