、
5,11,17,23,29,35-hexa-tert-butyl-37,39,41-trimethoxy-38,40,42-tris(2-aminoethoxy)calix[6]arene 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
三乙胺 作用下,
以
氯仿 、
N,N-二甲基甲酰胺 为溶剂,
反应 16.0h,
以35%的产率得到tert-butyl N-[4-[(24S)-3,9,15,35,41,56-hexatert-butyl-52,60,61-trimethoxy-23,27,50-trioxo-19,31,46-trioxa-22,25,28,49-tetrazanonacyclo[23.19.7.717,33.17,11.139,43.05,45.013,18.032,37.154,58]henhexaconta-1(45),2,4,7(60),8,10,13,15,17,32(37),33,35,39(52),40,42,54(61),55,57-octadecaen-24-yl]butyl]carbamate