摘要 |
PATENT PC(Ph)6851 PEPTIDE-SUBSTITUTED HETEROCYCLIC IMMUNOSTIMULANTS 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. 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; R1 is hydrogen or (C1-4)alkyl; x is O 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 -?- group at its N atom. |