(2R,6S)-3-Eth-(E)-ylidene-12-methyl-1,3,4,7,12,12b-hexahydro-2H,6H-2,6-methano-indolo[2,3-a]quinolizine-13-carboxylic acid methyl ester 在
2,3-二氯-5,6-二氰基-1,4-苯醌 作用下,
以
四氢呋喃 为溶剂,
反应 0.5h,
以86%的产率得到(2R,6R,7S)-3-Eth-(E)-ylidene-7-hydroxy-12-methyl-1,3,4,7,12,12b-hexahydro-2H,6H-2,6-methano-indolo[2,3-a]quinolizine-13-carboxylic acid methyl ester