5-(2,4-Dimethoxybenzyl)-8-hydroxy-2-(hydroxymethyl)-1-methyl-6-oxo-1,5,6,9-tetrahydropyrido[3',2':4,5]cyclopenta[1,2-f]indole-7-carboxylic acid 在
二氧化锰 二氧化锰 、
二氯甲烷 作用下,
以
二氯甲烷 为溶剂,
反应 2.5h,
以affording the product as a dark red foam (ca. 40 mg) which的产率得到5-(2,4-dimethoxybenzyl)-2-formyl-8-hydroxy-1-methyl-6-oxo-1,5,6,9-tetrahydropyrido[3',2':4,5]cyclopenta[1,2-f]indole-7-carboxylic acid