3β,14-dihydroxy-17β-(furan-3-yl)-5β,14β-androstane 、
Benzoic acid (2R,3S,4S,6S)-6-hydroxy-2-methyl-4-(2,2,2-trifluoro-acetylamino)-tetrahydro-pyran-3-yl ester 在
对甲苯磺酸 作用下,
以
二氯甲烷 、
苯 为溶剂,
反应 5.0h,
以28%的产率得到Benzoic acid (2R,3S,4S,6S)-6-((3S,5R,8R,9S,10S,13R,14S,17R)-17-furan-3-yl-14-hydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-3-yloxy)-2-methyl-4-(2,2,2-trifluoro-acetylamino)-tetrahydro-pyran-3-yl ester