{[2-(6-Benzyloxycarbonylamino-purin-9-yl)-acetyl]-[2-(9H-fluoren-9-ylmethoxycarbonylamino)-benzyl]-amino}-acetic acid 在
2,4,6-三甲基吡啶 、
N-羟基-7-氮杂苯并三氮唑 、
三氟乙酸 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
二氯甲烷 、
N,N-二甲基甲酰胺 为溶剂,
生成 2-[[2-[[2-[[2-[[9H-fluoren-9-ylmethoxy(hydroxy)methylidene]amino]phenyl]methyl-[2-[6-[[hydroxy(phenylmethoxy)methylidene]amino]purin-9-yl]acetyl]amino]-1-hydroxyethylidene]amino]phenyl]methyl-[2-[6-hydroxy-2-[[hydroxy(phenylmethoxy)methylidene]amino]purin-9-yl]acetyl]amino]acetic acid