Brtnik,F.; Zaoral,M., Collection of Czechoslovak Chemical Communications, 1976, vol. 41, p. 2969 - 2977
作者:Brtnik,F.、Zaoral,M.
DOI:——
日期:——
Synthesis and pharmacological characterization in vitro of cyclic enkephalin analogs: effect of conformational constraints on opiate receptor selectivity
作者:John DiMaio、Thi M. D. Nguyen、Carole Lemieux、Peter W. Schiller
DOI:10.1021/jm00354a008
日期:1982.12
[D-Leu5] and [des-Leu5] analogues of 4 (5 and 6) showed, in general, high potency in the guinea pig ileum (GPI) assay and low potency in the mouse vas deferens (MVD) assay. IC50 (MVD)/IC50 (GPI) ratios ranging from 3.1 to 29.4 were obtained, indicating the preference of the cyclicanalogues for mu receptors over delta receptors. With two exceptions, preferential affinity for mu receptors is reflected in the