Amino Triazolo Diazepines (Ata) as Constrained Histidine Mimics
摘要:
Two synthetic routes for the synthesis of amino-triazolodiazepine (Ata) scaffolds are presented. The scope of both of these proceeding through key intra- and intermolecular Huisgen cycloaddition reactions is discussed. The replacement of the His-Pro dipeptide segment in angiotensin IV by the dipeptide mimetic Ata-Gly and subsequent biological evaluation in two inhibitory enzyme assays validated the use of the Ata moiety as a His mimic given the equipotency of both peptidic analogs.
Preorganised Dipeptide Mimics as Foldamer Building Blocks
作者:Nicola Castellucci、Claudia Tomasini
DOI:10.1002/ejoc.201300194
日期:2013.6
Preorganised dipeptide mimics containing a 3,4-disubstituted oxazolidin-2-one, a flexible methylene group, and a 1,4-disubstituted triazole have been prepared in a few steps and high yield by copper-catalysed azide–alkyne cycloaddition (CuAAC). The combination of these three moieties allows the formation of a new dipeptide mimic that favours the formation of bent conformations, as we could demonstrate by
通过铜催化的叠氮化物-炔环加成 (CuAAC),通过几步高产率制备了含有 3,4-二取代 oxazolidin-2-one、柔性亚甲基和 1,4-二取代三唑的预组织二肽模拟物. 这三个部分的组合允许形成新的二肽模拟物,有利于弯曲构象的形成,正如我们可以通过 IR 和 ROESY 分析所证明的那样。