Z-Aeg(H)-Aeg(A[z])-Aeg(G[z])-Aem*TFA 、
N-CBZ胞嘧啶乙酸 在
bromo-tris-dimethylamino-phosphonium hexafluorophosphate 、
三乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以47%的产率得到N-(6,9-dihydro-9-(3-(2-(2-(morpholin-4-yl)ethylamino)-2-oxoethyl)-2,7,13,19-tetraoxo-15-(2-(2-oxo-4-(phenylmethoxycarbonylamino)pyrimidin-1(2H)-yl)acetyl)-21-phenyl-9-(2-((6-phenylmethoxycarbonylamino)-9H-purin-9-yl)acetyl)-20-oxa-3,6,9,12,15,18-hexaazaheneicos-1-yl)-6-oxo-1H-purin-2-yl)carbamic acid phenylmethyl ester