1-[(4-methylphenyl)sulfonyl]-6-oxa-1-azaspiro[2.5]octane 、 benzyl (1S,4aR,6aS,7R,8R,10aR,10bR,12aR,14R,15R)-8-[(1R)-1,2-dimethylpropyl]-15-hydroxy-14-methoxy-1,6,6a,7,8,9,10,10a,10b,11,12,12a-dodecahydro-1,6a,8,10a-tetramethyl-4H-1,4a-propano-2H-phenanthro[1,2-c]pyran-7-carboxylate 在
18-冠醚-6 、 potassium hydride 作用下,
以
乙二醇二甲醚 为溶剂,
反应 1.0h,
生成
benzyl (1S,4aR,6aS,7R,8R,10aR,10bR,12aR,14R,15R)-8-[(1R)-1,2-dimethylpropyl]-14-methoxy-15-[[tetrahydro-4-[[(4-methylphenyl)sulfonyl]amino]-2H-pyran-4-yl]methoxy]-1,6,6a,7,8,9,10,10a,10b,11,12,12a-dodecahydro-1,6a,8,10a-tetramethyl-4H-1,4a-propano-2H-phenanthro[1,2-c]pyran-7-carboxylate