(4α,5α)-4-methyl-17-oxoandrost-14-ene-4-carboxylic acid methyl ester 在
sodium tetrahydroborate 作用下,
以
甲醇 为溶剂,
反应 2.0h,
以55 mg的产率得到methyl (4R,5R,8R,9S,10R,13S,17S)-17-hydroxy-4,10,13-trimethyl-1,2,3,5,6,7,8,9,11,12,16,17-dodecahydrocyclopenta[a]phenanthrene-4-carboxylate