摘要:
Heterodimeric compounds H-Dmt-Tic-NH-hexyl-NH-R (R = Dmt, Tic, and Phe) exhibited high affinity to delta-(K-i delta = 0.13-0.89 nM) and p-opioid receptors (K-i mu = 0.38-2.81 nM) with extraordinary potent delta antagonism (pA(2) = 10.2-10.4). These compounds represent the prototype for a new class of structural homologues lacking mu-opioid receptor-associated agonism IC50 = 1.6-5.8 mu M) based on the framework of bis-[H-Dmt-NH]-alkyl (Okada, Y.; Tsuda, Y.; Fujita, Y.; YDkoi, T.; Sasaki, Y.; Ambo, A.; Konishi, R.; Nagata, M.; Salvadori, S.; Jinsmaa, Y.; Bryant, S. D.; Lazarus, L. H. J. Med. Chem. 2003, 46, 3201), which exhibited both high p affinity and bioactivity. (c) 2005 Elsevier Ltd. All rights reserved.