5,11,17,23-tetraamino-25,26,27,28-tetra-n-propyloxycalix[4]arene 、 4-carboxy-2-((4,7,10-tris(2-(tert-butoxy)-2-oxoethyl)-1,4,7,10-tetraazacyclododecan-1-yl)methyl)pyridine 1-oxide N,N-diisopropylethylamine 在
Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
乙腈 为溶剂,
反应 73.0h,
以89%的产率得到5,11,17,23-tetrakis-(tert-butyl-DO3A-py(NO-C_)acetamidyl)-25,26,27,28-tetrapropoxy-calix[4]arene