(8S,9R,10S,11S,13S,14S,16R,17R)-9-fluoro-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthrene-17-carbothioic S-acid 、
甲酸乙酯 在
sodium hydride 作用下,
以
四氢呋喃 为溶剂,
反应 5.33h,
生成 (8S,9R,10S,11S,13S,14S,16R,17R)-9-fluoro-2-formyl-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-17-carbothioic S-acid