(4aR,8aS)-3a-Methoxy-6,8b-dimethyl-1-oxo-2,3,3a,7,8,8b-hexahydro-1H,4aH-benzo[b]cyclopenta[d]furan-8a-carboxylic acid methyl ester 、
二苯二硫醚 在
lithium diisopropyl amide 作用下,
生成
(4aR,8aS)-3a-Methoxy-6,8b-dimethyl-1-oxo-2-phenylsulfanyl-2,3,3a,7,8,8b-hexahydro-1H,4aH-benzo[b]cyclopenta[d]furan-8a-carboxylic acid methyl ester