(1aS,4S,4aS,5aR,8aS,8bR,9R,10S,10aR,10bS,10cS)-10,10a,10b-Trihydroxy-4,8b,9,10c-tetramethyl-2,7-dioxo-tetradecahydro-1,6-dioxa-benzo[mno]aceanthrylene-1a-carbonitrile 在
methyltrioctylammonium hydroxide 作用下,
以
水 、
苯 为溶剂,
反应 0.17h,
以80%的产率得到(2R,3S,3aR,6aS,7aR,8S,11aR,11bR,11cS)-2,10,11b-Trihydroxy-3,8,11a,11c-tetramethyl-2,3,3a,6a,7,7a,8,11a,11b,11c-decahydro-4H-6-oxa-benzo[de]anthracene-1,5,11-trione