Solid-phase synthesis of N , N ′-substituted acylguanidines
作者:Dharmpal S Dodd、Yufen Zhao
DOI:10.1016/s0040-4039(00)02265-6
日期:2001.2
An efficient method for the solid-phase synthesis of N,N′-substituted acylguanidines is presented. The key-step involves the N-acylation of resin immobilized S-methylisothiourea with a variety of carboxylic acids using PyAOP as the coupling agent. The resulting resin bound N-acyl-derivatives are reacted with a host of amines and the N-acyl,N′-alkyl(aryl)guanidines liberated from the resin upon exposure