(1-(14-azido-2-oxo-6,9,12-trioxa-3-azatetradecyl)-5-methoxy-2-methyl-4,7-dioxo-4,7-dihydro-1H-indol-3-yl)methyl (2-((chlorocarbonyl)(methyl)amino)ethyl)(methyl)carbamate 、
7-乙基-10-羟基喜树碱 在
三乙胺 作用下,
以
二氯甲烷 为溶剂,
以60.1 mg的产率得到(S)-(1-(14-azido-2-oxo-6,9,12-trioxa-3-azatetradecyl)-5-methoxy-2-methyl-4,7-dioxo-4,7-dihydro-1H-indol-3-yl)methyl (4,11-diethyl-4-hydroxy-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-9-yl) ethane-1,2-diylbis(methylcarbamate)