'3-Oxo-dihydroceanothsaeure-dimethylester' 在
吡啶 、 lithium aluminium tetrahydride 作用下,
生成 Acetic acid (1R,3aR,5aR,5bR,7aS,10S,10aR,10bR,12aR,12bR)-1,7a-bis-acetoxymethyl-10-isopropyl-3,3,5a,5b,12b-pentamethyl-icosahydro-dicyclopenta[a,i]phenathren-2-yl ester