(8R,9S,13S,14S,17S)-3-((tert-butyldimethylsilyl)oxy)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl thiazole-4-carboxylate 在
盐酸 作用下,
以
四氢呋喃 、
水 、
异丙醇 为溶剂,
以91%的产率得到[(8R,9S,13S,14S,17S)-3-hydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-17-yl] 1,3-thiazole-4-carboxylate