Toluene-4-sulfonic acid (3S,8S,9S,10R,13S,14S,16S,17R)-17-((R)-1,5-dimethyl-hexyl)-16-hydroxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester 在
Super-H 作用下,
以
四氢呋喃 为溶剂,
以55%的产率得到cholest-5-en-16β-ol