PREPARATION OF PEPTIDE-SUBSITUTED HETEROCYCLIC COMPOUNDS

摘要

Peptides (I; R=5- or 6-membered N-contg. heterocycle; R1=H, C1-4 alkyl; x=0-5; y=0,1) are prepd. as immunostimulants and anti- infective agents (no data). For example, N-heptanoyl-r-Dglutamyl-L- meso-diaminopimelic acid-N-(4-aminobutyl)-5-L-hydantoin is prepd. in a series of steps.