(E)-(3S,6S,9S)-9-Benzyl-6-isobutyl-3-methyl-16-methylene-1,4,7,10-tetraaza-cyclononadec-17-ene-2,5,8,11-tetraone 、
N-苯基马来酰亚胺 以
1,2-二氯乙烷 为溶剂,
以53%的产率得到(8S,11S,14S)-8-Benzyl-11-isobutyl-14-methyl-21-phenyl-7,10,13,16,21-pentaaza-tricyclo[16.6.1.0
19,23]pentacos-1(25)-ene-6,9,12,15,20,22-hexaone