(3aS,5R,10bR,12R,12bS)-5-Chloro-12-cyano-3a-ethyl-12a-oxy-2,3,3a,4,5,11,12,12b-octahydro-1H-6,12a-diaza-indeno[7,1-cd]fluorene-5-carboxylic acid methyl ester 在
乙酸酐 作用下,
以
二氯甲烷 为溶剂,
反应 96.0h,
以44%的产率得到(3aS,5R,10bR,12bS)-5-Chloro-3a-ethyl-12-oxo-2,3,3a,4,5,11,12,12b-octahydro-1H-6,12a-diaza-indeno[7,1-cd]fluorene-5-carboxylic acid methyl ester