(R)-4-((3R,5R,9R,10S,13R,17R)-3-Hydroxy-10,13-dimethyl-2,3,4,5,6,7,9,10,11,12,13,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)-pentanoic acid methyl ester 在
甲醇 、
sodium methylate 作用下,
以92.0 %的产率得到3β-hydroxy-5β-cholen-(8(14))-oic acid-(24)