作者:Peter W. Schiller、Grazyna Weltrowska、Thi M. D. Nguyen、Brian C. Wilkes、Nga N. Chung、Carole Lemieux
DOI:10.1021/jm00099a025
日期:1992.10
of Phe3 in [D-Ala2]deltorphin I with 2-aminoindan-2-carboxylic acid (Aic) or L- or D-2-aminotetralin-2-carboxylic acid (Atc) resulted in agonist compounds which retained the high delta receptor selectivity of the parent peptide. Substitution of a tetrahydroisoquinoline-3-carboxylic acid (Tic) residue in the 2-position of [D-Ala2]deltorphin I and of [Phe4,Nle6]deltorphin produced a partial delta agonist
通过在肽序列的2或3位上掺入环状苯丙氨酸类似物或通过各种侧链至侧链环化来合成构象受限的deltorphin类似物。在mu,delta和kappa受体选择性结合测定以及豚鼠回肠(GPI)和小鼠输精管(MVD)生物测定中测试了化合物。用2-氨基茚满-2-羧酸(Aic)或L-或D-2-氨基四氢-2-羧酸(Atc)取代[D-Ala2] deltorphin I中的Phe3产生保留高δ受体的激动剂化合物母体肽的选择性。在[D-Ala2] deltorphin I和[Phe4,Nle6] deltorphin的2-位上取代四氢异喹啉-3-羧酸(Tic)残基产生部分δ激动剂,H-Tyr-Tic-Phe-Asp- Val-Val-Gly-NH2,和纯δ拮抗剂,分别为H-Tyr-Tic-Phe-Phe-Leu-Nle-Asp-NH2。后者的拮抗剂表现出高的δ选择性(Ki mu / Kiδ= 502),并且在