methyl (1R,4R,12S)-4-methyl-3,7-dioxo-5,10-diazatetracyclo[7.4.0.01,12.02,6]trideca-2(6),8-diene-4-carboxylate 在
吡啶 、
氢溴酸 、 sodium hydride 作用下,
生成 (2R,8S)-8-Bromomethyl-4-dimethylcarbamoyloxy-6-(5-methoxycarbonylamino-1H-indole-2-carbonyl)-2-methyl-1-oxo-1,2,3,6,7,8-hexahydro-pyrrolo[3,2-e]indole-2-carboxylic acid methyl ester