glycylglycyl-L-phenylalanyl-N-[(1S,9S)-9-ethyl-5-fluoro-9-hydroxy-4-methyl-10,13-dioxo-2,3,9,10,13,15-hexahydro-1H,12H-benzo[de]pyrano[3’,4’:6,7]indolizino[1,2-b]quinolin-1-yl]glycinamide 、
N-羟基丁二酰亚胺 、
4-tert-Butyl N-[(9H-Fluoren-9-ylmethoxy)carbonyl]-L-aspartate 、
N,N'-二环己基碳二亚胺 在
silica gel 、
氯仿 、
甲醇 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 48.0h,
以to yield the titled compound as a pale yellow solid (0.278 g, 73%)的产率得到tert-butyl (5S,14S)-5-benzyl-1-{[(1S,9S)-9-ethyl-5-fluoro-9-hydroxy-4-methyl-10,13-dioxo-2,3,9,10,13,15-hexahydro-1H,12H-benzo[de]pyrano[3’,4’:6,7]indolizino[1,2-b]quinolin-1-yl]amino}-14-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-1,4,7,10,13-pentaoxo-3,6,9,12-tetraazahexadecan-16-oate