(1S,2S,3aR,4S,5R,7aS)-1-Ethyl-2-methyl-5-(toluene-4-sulfonylmethyl)-2,3,3a,4,5,7a-hexahydro-1H-indene-4-carboxylic acid ethyl ester 在
sodium hydride 作用下,
以
四氢呋喃 为溶剂,
反应 1.0h,
生成
(3R,3aS,5aS,6R,7R,8aR,8bR)-6-ethyl-7-methyl-3-(4-methylphenyl)sulfonyl-3,3a,5a,6,7,8,8a,8b-octahydro-1H-as-indacen-2-one