1-(4-chlorobenzoyl)-N-hydroxy-5-methoxy-2-methyl-1H-indole-3-methanamine 、
乙基丙二酰二氯 、
sodium acetate 、
dioxane-water 在
crude product 、 silica gel 、
丙酮 、
正己烷 作用下,
以to give pure 3-[[[1-(4-chlorobenzoyl)-5-methoxy-2-methyl-lH-indol-3-yl]methyl]hydroxyamino]-3-oxopropanoic acid, ethyl ester (24%)的产率得到3-[[[1-(4-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl]methyl]hydroxyamino]-3-oxo-propanoic acid, ethyl ester