High Affinity Agonists of the Neuropeptide Y (NPY) Y<sub>4</sub> Receptor Derived from the C-Terminal Pentapeptide of Human Pancreatic Polypeptide (hPP): Synthesis, Stereochemical Discrimination, and Radiolabeling
作者:Kilian K. Kuhn、Thomas Ertl、Stefanie Dukorn、Max Keller、Günther Bernhardt、Oliver Reiser、Armin Buschauer
DOI:10.1021/acs.jmedchem.6b00309
日期:2016.7.14
The diastereomeric mixture of d/l-2,7-diaminooctanedioyl-bis(YRLRY-NH2) (BVD-74D, 2) was described in the literature as a high affinity Y4 receptor agonist. Here we report on the synthesis and pharmacological characterization of the pure diastereomers (2R,7R)- and (2S,7S)-2 and a series of homo- and heterodimeric analogues in which octanedioic acid was used as an achiral linker. To investigate the
d / l -2,7-二氨基辛烷二酰基-双(YRLRY-NH 2)(BVD-74D,2)的非对映异构混合物在文献中被描述为高亲和力Y 4受体激动剂。在这里我们报告纯的非对映异构体(2 R,7 R)-和(2 S,7 S)-2以及一系列均二和异二聚体类似物的合成和药理学表征,其中辛二酸被用作非手性连接体。探讨精氨酸残基的作用,一个或两个精氨酸被丙氨酸取代。此外,ñ ω引入-(6-氨基己基氨基羰基)Arg作为精氨酸替代物(17)。(2 - [R,7 - [R )- 2优于(2小号,7小号) - 2与结合和功能细胞测定和等效17。[ 3 H]在(2 R,7 R)-2的连接子中的一个氨基或在17中的伯氨基上的丙烯酰化导致了高亲和力的Y 4 R放射性配体([ 3 H]-(2 R,7 R)-10,[ 3小时]18)具有亚纳摩尔的K d值。