methyl (4S,7S,10S)-10-(2-((R)-2-((R)-3-(benzyloxy)-2-(N-methylpalmitamido)propanamido)propanamido)-N-methylacetamido)-16,26-dimethoxy-7-methyl-25-nitro-6,9-dioxo-5,8-diaza-1,2(1,3)-dibenzenacyclodecaphane-4-carboxylate 在
aluminum tri-bromide 、
乙硫醇 、
二溴甲烷 作用下,
反应 5.0h,
以19%的产率得到(8S,11S,14S)-4-amino-14-[[2-[[(2R)-2-[[(2R)-2-[hexadecanoyl(methyl)amino]-3-hydroxypropanoyl]amino]propanoyl]amino]acetyl]-methylamino]-3,18-dihydroxy-11-methyl-10,13-dioxo-9,12-diazatricyclo[13.3.1.12,6]icosa-1(18),2,4,6(20),15(19),16-hexaene-8-carboxylic acid