Solid‐Phase Synthesis of Substrate‐Based Dipeptides and Heterocyclic Pseudo‐dipeptides as Potential NO Synthase Inhibitors
作者:Youness Touati‐Jallabe、Thibault Tintillier、Elodie Mauchauffée、Jean‐Luc Boucher、Jérémy Leroy、Booma Ramassamy、Abdallah Hamzé、Karima Mezghenna、Amine Bouzekrini、Claudia Verna、Jean Martinez、Anne‐Dominique Lajoix、Jean‐François Hernandez
DOI:10.1002/cmdc.201900659
日期:2020.3.18
4-oxadiazole and 1,2,4-triazole) were prepared as potential inhibitors of NO synthases (NOS). A methodology involving formation of a thiocitrulline intermediate linked through its side-chain on a solid support followed by modification of its carboxylate group was developed. Finally, the side-chain thiourea group was either let unchanged, S-alkylated (Me, Et) or guanidinylated (Me, Et) to yield respectively
制备了通过酰胺键或杂环部分(1,2,4-恶二唑,1,3,4-恶二唑和1,2,4-三唑)在C末端修饰的160多种精氨酸类似物NO合酶(NOS)的数量。开发了一种方法,该方法涉及形成通过其在固体载体上的侧链连接的硫代瓜氨酸中间体,然后对其羧基进行修饰。最后,在TFA处理后,将侧链硫脲基保持不变,进行S烷基化(Me,Et)或胍基化(Me,Et),分别得到相应的硫代瓜氨酸,S-Me / Et-异硫代瓜氨酸和N-Me /精氨酸底物类似物。他们都针对三种重组NOS亚型进行了测试。含有S-Et-或S-Me-Itc部分且主要属于二肽样和1,2的几种化合物,已显示4-恶二唑系列以1-50μM的IC50抑制nNOS和iNOS。光谱研究证实这些新化合物在血红素活性位点相互作用。发现活性更高的化合物以与参考化合物L-NIL和SEIT相似的效率抑制RAW264.7和INS-1细胞中表达的细胞内iNOS。