Butyric acid (8S,9R,10S,11S,13S,14S,16S,17R)-9-fluoro-11-hydroxy-17-(2-methanesulfonyloxy-acetyl)-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl ester 、
Sodium; p-tolyl-methanethiolate 以
丙酮 为溶剂,
反应 7.0h,
以72%的产率得到(17R)-9α-fluoro-11β-hydroxy-16β-methyl-4'-(p-methylbenzyl)thio-5'-propyl-spiro
-3,3'-dione