(3R,4aS,5R,6S,11bR,11cS)-5-Benzyloxy-11b,11c-dihydroxy-6-hydroxymethyl-3-phenyl-5,6,11b,11c-tetrahydro-1H,4aH-2,4-dioxa-6a-aza-benzo[c]fluoren-7-one 在
偶氮二甲酸二异丙酯 、
三苯基膦 作用下,
以
甲苯 为溶剂,
反应 5.0h,
以93%的产率得到(1R,10S,11R,12S,14R,17S)-17-hydroxy-14-phenyl-11-phenylmethoxy-13,15,18-trioxa-9-azapentacyclo[8.7.2.01,9.02,7.012,17]nonadeca-2,4,6-trien-8-one