Butyric acid (S)-3-[(3bR,5aR,6R,8aR,10S)-6-((R)-1,5-dimethyl-hexyl)-5a-methyl-1,3-dioxo-2-phenyl-2,3,4,5,5a,6,7,8,8a,10-decahydro-1H,3bH-2,3a,10a-triaza-dicyclopenta[a,f]naphthalen-10-yl]-4-methyl-cyclohex-3-enyl ester 在
lutidine 、
氯 作用下,
以
四氯化碳 、
异辛烷 、
二氯甲烷 为溶剂,
以65%的产率得到Butyric acid (1R,5S)-5-chloro-3-[(3bR,5aR,6R,8aR,10S)-6-((R)-1,5-dimethyl-hexyl)-5a-methyl-1,3-dioxo-2-phenyl-2,3,4,5,5a,6,7,8,8a,10-decahydro-1H,3bH-2,3a,10a-triaza-dicyclopenta[a,f]naphthalen-10-yl]-4-methyl-cyclohex-3-enyl ester