(5aR,8aS,8a1S,11aR)-8a1-(2-chloroethyl)-6-(cyclopropylmethyl)-2-methoxy-5a,6,8a1,9,10,11a-hexahydro-7H-furo[2',3',4',5':4,5]phenanthro[9,8a-d]oxazole-7,11(5H)-dione 在
溶剂黄146 、
锌 作用下,
以87%的产率得到(1R,6S,10R)-9-(cyclopropylmethyl)-15-methoxy-7,17-dioxa-9-azapentacyclo[10.7.1.01,6.06,10.016,20]icosa-12(20),13,15-triene-3,8-dione