3-((13S,15R)-4-amino-3-hydroxy-13-methyl-17-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-15-yl)-N-(5-methylthiazol-2-yl)propanamide 在
tetrafluoroboric acid 、 sodium nitrite 作用下,
以
乙醇 、
水 为溶剂,
反应 1.0h,
以22 mg的产率得到3-((13S,15R)-4-fluoro-3-hydroxy-13-methyl-17-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-15-yl)-N-(5-methylthiazol-2-yl)propanamide