Amide-to-Ester Substitution Allows Fine-Tuning of the Cyclopeptide Conformational Ensemble
作者:Tommaso Cupido、Jan Spengler、Javier Ruiz-Rodriguez、Jaume Adan、Francesc Mitjans、Jaume Piulats、Fernando Albericio
DOI:10.1002/anie.200907274
日期:2010.4.1
Without affecting the overall 3D structure, amide‐to‐ester backbone substitution (or ester scan) exerts a pronounced influence on the conformational equilibrium of the RGD cyclopeptide cilengitide and its derivatives (see figure; RGD=Arg‐Gly‐Asp). The appropriate substitution, which stabilized the receptor‐complementary conformations, improved the biological activity of this integrin antagonist.
在不影响整体3D结构的情况下,酰胺至酯主链取代(或酯扫描)对RGD环肽cilengitide及其衍生物的构象平衡产生显着影响(见图; RGD = Arg-Gly-Asp)。适当的取代可稳定受体互补构象,从而改善了这种整合素拮抗剂的生物活性。