5-[[2-[[2-[[2-[2-(2,5-Dioxopyrrol-1-yl)ethylamino]-2-oxoethyl]amino]-2-oxoethyl]amino]-2-oxoethyl]amino]-5-oxopentanoic acid 、 (11-Chloro-21-hydroxy-12,20-dimethoxy-2,5,9,16-tetramethyl-8,23-dioxo-4,24-dioxa-9,22-diazatetracyclo[19.3.1.110,14.03,5]hexacosa-10,12,14(26),16,18-pentaen-6-yl) 2-(methylamino)propanoate 在
盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下,
生成