Synthesis and Structure−Activity Relationships of 2-Substituted <scp>d</scp>-Tryptophan-Containing Peptidic Endothelin Receptor Antagonists: Importance of the C-2 Substituent of the <scp>d</scp>-Tryptophan Residue for Endothelin A and B Receptor Subtype Selectivity
作者:Takehiro Fukami、Takeru Yamakawa、Kenji Niiyama、Hisaki Kojima、Yuuka Amano、Fuyuko Kanda、Satoshi Ozaki、Takahiro Fukuroda、Masaki Ihara、Mitsuo Yano、Kiyofumi Ishikawa
DOI:10.1021/jm9600914
日期:1996.1.1
Continuing studies on modifications of potent cyclic pentapeptide endothelin (ET) receptor antagonists, represented by BQ-123, and potent linear tripeptide derivative ET receptor antagonists, represented by BQ-788, are described herein. The introduction of D-tryptophan analogues with C-2 substituents in these peptidic ET antagonists resulted in potent ET receptor antagonists with various ETA/ETB subtype selectivity
本文描述了以BQ-123为代表的有效环状五肽内皮素(ET)受体拮抗剂和以BQ-788为代表的有效线性三肽衍生物ET受体拮抗剂的修饰的持续研究。在这些肽类ET拮抗剂中引入具有C-2取代基的D-色氨酸类似物,可产生具有各种ETA / ETB亚型选择性的有效ET受体拮抗剂。在环状五肽和线性三肽系列中都发现带有2-卤代和2-甲基-D-色氨酸的联合ETA / ETB受体拮抗剂。相反,具有2-氰基-D-色氨酸的化合物是ETB受体选择性拮抗剂。D-色氨酸残基的C-2取代基似乎对于区分拮抗剂的ETA / ETB亚型选择性非常重要。