Peptide-substituted heterocyclic compounds having the formula below, pharmaceutically acceptable salts thereof and intermediates therefor; processes for their preparation and use as immunostimulant and antiinfective agents. ##STR1## wherein R is a 5- or 6-membered N-containing heterocyclyl moiety which can have an additional hetero atom selected from N, S or O; R.sup.1 is hydrogen or (C.sub.1-4)alkyl; x is 0 or an integer from 1 to 5; and y is 0 or 1; provided that when y is 0, said N-containing heterocyclyl moiety is linked to the ##STR2## group at its N atom.
具有以下式子的肽替代
杂环化合物,其药物可接受的盐和其中间体;其制备过程以及用作免疫刺激剂和抗感染剂的用途。其中,R是一个5或6元杂环N-含有基团,可以具有来自N,S或O的额外杂原子; R1是氢或(C1-4)烷基; x为0或1到5的整数; y为0或1; 前提是当y为0时,所述的N-含有的杂环基团与其N原子连接到##STR2##基团。