1,3-二苯基异苯并呋喃 、 (3aS,5R,7aR)-8,8-Dibromo-2,3,4,5-tetrahydro-1H-3a,7a-methano-inden-5-ol 在
甲基锂 作用下,
生成 rac-(1R,5aS,6R,11R,11aS,14R)-6,11-diphenyl-1,3,4,5,6,11-hexahydro-6,11-epoxy-1,5a-ethanocyclobuta[d]anthracen-14-ol 、
rac-(1R,5aS,6R,11R,11aS,14R)-6,11-diphenyl-1,3,4,5,6,11-hexahydro-6,11-epoxy-1,5a-ethanocyclobuta[d]anthracen-14-ol