title: Analgesic dipeptide derivatives. II. Synthetic dipeptides containing a C-terminal 2-(2-nitrophenylsulfenyl) tryptophan residue.
abstract: The syntheses of dipeptide derivatives of the general formula X-Trp(Nps)-OR (R = H or Me; X = Lys, Gly, Ala, Leu, Ser, Glu, His, Arg, Orn, Dpr, Gpr and Har) are described. The analgesic activities of Gpr- and Har-containing dipeptides have been evaluated and, in the light of these results, the influence of the side chain length of the basic amino acid on the analgesic effect is studied.
mesh_terms: D000698:Analgesia; D000700:Analgesics / Q000138:chemical synthesis*; D000818:Animals; D002855:Chromatography, Thin Layer; D004151:Dipeptides / Q000138:chemical synthesis* / Q000494:pharmacology; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D051379:Mice; D013056:Spectrophotometry, Ultraviolet; D013329:Structure-Activity Relationship; D014364:Tryptophan / Q000031:analogs & derivatives*
chemical_list: D000700:Analgesics; D004151:Dipeptides; D007202:Indicators and Reagents; D014364:Tryptophan