N,N'-dimethyl-N-tritylethane-1,2-diamine 、
18-O-(4-nitrophenylcarbonate)-4,5-dihydro-11-O-demethyl-15-demethoxy-18,21-didehydro-21-deoxomacbecin 以
二氯甲烷 为溶剂,
以95%的产率得到(4E,8S,9R,10E,12S,13R,14S,16R)-9-(carbamoyloxy)-13-hydroxy-14-methoxy-4,8,10,12,16-pentamethyl-3-oxo-2-aza-1(1,3)-benzenacycloheptadecaphane-4,10-dien-15-yl methyl(2-(methyl(trityl)amino)ethyl)carbamate