(3R,5R,8R,9R,10S,13S,14S,17S)-3-hydroxy-3,13-dimethyl-2,4,5,6,7,8,9,10,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-17-carbaldehyde 、
2,2,2-三氟乙胺盐酸盐 在
sodium nitrite 、
zirconium tetrachloride 作用下,
以
二氯甲烷 、
水 为溶剂,
反应 1.03h,
以9%的产率得到3,3,3-trifluoro-1-[(3R,5R,8R,9R,10S,13S,14S,17S)-3-hydroxy-3,13-dimethyl-2,4,5,6,7,8,9,10,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]propan-1-one