AT<sub>2</sub>-Selective Angiotensin II Analogues Containing Tyrosine-Functionalized 5,5-Bicyclic Thiazabicycloalkane Dipeptide Mimetics
作者:Petra Johannesson、Máté Erdélyi、Gunnar Lindeberg、Per-Anders Frändberg、Fred Nyberg、Anders Karlén、Anders Hallberg
DOI:10.1021/jm049651m
日期:2004.11.1
both displayed high angiotensin AT(2)/AT(1) receptor binding preferences and had AT(2) receptor affinities in the same low nanomolar range as angiotensin II itself. Conformational analysis, using experimental constraints derived from NMR studies, indicated that the Tyr(4) and His(6) residues in one of the angiotensin II analogues were in close proximity to each other.
本文报告了酪氨酸官能化的5,5-双环噻唑二环烷烃二肽模拟物替代Tyr(4)-Ile(5)残基的两个血管紧张素II类似物的合成。这些类似物的制备依赖于α,α-二取代的嵌合氨基酸衍生物的合成和掺入以及对半胱氨酸残基的树脂上双环化。合成的类似物都显示出高的血管紧张素AT(2)/ AT(1)受体结合偏好,并且在与血管紧张素II相同的低纳摩尔范围内具有AT(2)受体亲和力。使用来自NMR研究的实验约束,进行构象分析,结果表明,血管紧张素II类似物之一中的Tyr(4)和His(6)残基彼此非常接近。