(3aR,5aR,5bR,7aR,9S,11aR,11bR,13aS)-3a-(chlorocarbonyl)-1-isopropyl-5a,5b,8,8,11a-pentamethyl-2-oxo-3,3a,4,5,5a,5b,6,7,7a,8,9,10,11,11a,11b,12,13,13a-octadecahydro-2H-cyclopenta[a]chrysen-9-yl acetate 在
甲醇 、
三乙胺 、 sodium hydroxide 作用下,
以
四氢呋喃 、
二氯甲烷 为溶剂,
生成 (3aR,5aR,5bR,7aR,9S,11aR,1bR,13aS)-9-hydroxy-1-isopropyl-5a,5b,8,8,11a-pentamethyl-3a-((S)-2-(5-(pyridin-3-yl)-1H-imidazol-2-yl)pyrrolidine-1-carbonyl)-3,3a,4,5,5a,5b,6,7,7a,8,9,10,11,11a,11b,12,13,13a-octadecahydro-2H-cyclopenta[a]chrysen-2-one