上游原料
(8R,9S,13S,14S)-3-hydroxy-13-methyl-6,7,8,9,11,12,13,14,15,16-decahydro-17H-cyclopenta[a]phenanthren-17-one(8R,9S,13S,14S)-3-(benzyloxy)-13-methyl-6,7,8,9,11,12,13,14,15,16-decahydro-17H-cyclopenta[a]phenanthren-17-onetrimethyl-[[(8R,9S,13S,14S)-13-methyl-3-phenylmethoxy-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthren-17-yl]oxy]silane13-methyl-3-[(phenylmethyl)oxy]-6,7,8,9,11,12,13,14-octahydro-17H-cyclopenta[a]phenanthren-17-one(8R,9S,13S,14S)-13-methyl-3-phenylmethoxy-6,7,8,9,11,12,14,17-octahydrocyclopenta[a]phenanthren-17-ol[(8R,9S,13S,14S)-13-methyl-3-phenylmethoxy-6,7,8,9,11,12,14,17-octahydrocyclopenta[a]phenanthren-17-yl] acetate(8R,9S,13S,14S,15R,16R)-3-(benzyloxy)-15,16-dihydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl acetate(8R,9S,13S,14S,15R,16R)-3,15,16-trihydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl acetate
