Tert-butyl 2-(4-diazo-5-methoxy-3,5-dioxopentyl)-3-[2-[(4-methylphenyl)sulfonylamino]ethyl]indole-1-carboxylate 在
copper(I) trifluoromethanesulfonate benzene 作用下,
以
二氯甲烷 为溶剂,
反应 12.0h,
以50%的产率得到8-O-tert-butyl 13-O-methyl (1S,9S)-12-hydroxy-16-(4-methylphenyl)sulfonyl-8,16-diazatetracyclo[7.4.3.01,9.02,7]hexadeca-2,4,6,12-tetraene-8,13-dicarboxylate