(1R*,10S)-1-sec-butyl-5-cyano-1-ethoxycarbonylmethyl-8-methyl-1,3,4,9-tetrahydro-pyrano[3,4-b]indole-7-carboxylic acid benzyl ester                                                                                                                                                              在
                                                                                                                                         palladium 10% on activated carbon                                                                                                                                                                                                                               
氢气                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙酸乙酯                                                                                  为溶剂,
                                                                                                                                                    反应 3.0h,
                                                                                                                生成                                                 (1R*,10S)-1-sec-butyl-5-cyano-1-ethoxycarbonylmethyl-8-methyl-1,3,4,9-tetrahydro-pyrano[3,4-b]indole-7-carboxylic acid   、                                                                                             (1R*,10S)-1-sec-butyl-5-cyano-1-ethoxycarbonylmethyl-8-methyl-1,3,4,9-tetrahydro-pyrano[3,4-b]indole-7-carboxylic acid