(1R*,10S)-(1-sec-butyl-5-cyano-7-hydroxymethyl-8-methyl-1,3,4,9-tetrahydro-pyrano[3,4-b]indol-1-yl)-acetic acid ethyl ester 在
manganese(IV) oxide 作用下,
以
苯 为溶剂,
反应 2.0h,
生成 (1R*,10S)-(1-sec-butyl-5-cyano-7-formyl-8-methyl-1,3,4,9-tetrahydro-pyrano[3,4-b]indol-1-yl)-acetic acid ethyl ester 、 (1R*,10S)-(1-sec-butyl-5-cyano-7-formyl-8-methyl-1,3,4,9-tetrahydro-pyrano[3,4-b]indol-1-yl)-acetic acid ethyl ester