Synthesis of 2,5-Diaryl-Substituted Thiophenes as Helical Mimetics: Towards the Modulation of Islet Amyloid Polypeptide (IAPP) Amyloid Fibril Formation and Cytotoxicity
作者:Avid Hassanpour、Carole Anne De Carufel、Steve Bourgault、Pat Forgione
DOI:10.1002/chem.201303928
日期:2014.2.24
A range of 2,5‐diarylated thiophenes were synthesised as small molecule mimetics of the α‐helix to modulate the amyloidogenesis and cytotoxic effect of islet amyloid polypeptide (IAPP). 3‐Substituted thiophene‐2‐carboxylic acids were used as key intermediates and functionalised by palladium decarboxylative cross‐coupling and direct CH activation successively with overall yields ranging from 23 to
合成了一系列2,5-二芳基噻吩作为α-螺旋的小分子模拟物,以调节胰岛淀粉样多肽(IAPP)的淀粉样生成和细胞毒性作用。3-取代的噻吩-2-羧酸用作关键中间体,并通过钯脱羧交叉偶联和连续的CH活化功能化,总收率从23%到95%不等。通过基于硫代黄素T(ThT)荧光的分析评估了配体对IAPP淀粉样蛋白原纤维形成的影响。此外,使用β-胰腺细胞评估了这些化合物抑制IAPP细胞毒性作用的能力。