Nb-methoxycarbonyl-DL-tryptophan methyl ester 在
aluminum oxide 、 4,5,6,7-tetrachloro-2',4',5',7'-tetraiodofluorescein disodium salt 、
氧气 作用下,
生成 (2R,3aS)-3a-Hydroxy-3,3a,8,8a-tetrahydro-2H-pyrrolo[2,3-b]indole-1,2-dicarboxylic acid dimethyl ester 、 (2S,3aS)-3a-Hydroxy-3,3a,8,8a-tetrahydro-2H-pyrrolo[2,3-b]indole-1,2-dicarboxylic acid dimethyl ester 、
1,2-dimethoxycarbonyl-3a-hydroperoxy-1,2,3,3a,8,8a-hexahydropyrrolo<2,3-b>indole