2-羟甲基-15-冠-5 、
[(3S,8S,9S,10R,13R,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl] carbonochloridate 在
吡啶 作用下,
以
氯仿 为溶剂,
反应 24.0h,
以56%的产率得到Carbonic acid (3S,8S,9S,10R,13R,17R)-17-((R)-1,5-dimethyl-hexyl)-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 1,4,7,10,13-pentaoxa-cyclopentadec-2-ylmethyl ester