Advances towards Aromatic Oligoamide Foldamers: Synthesis and X-ray Structures of Dimeric Arylopeptoids with Conformation-Directing Side Chains
作者:Thomas Hjelmgaard、Malene Plesner、Mette Marie Dissing、Jeanette Marker Andersen、Karla Frydenvang、John Nielsen
DOI:10.1002/ejoc.201402040
日期:2014.7
efficiently synthesized 36 arylopeptoid dimers with ortho-, meta-, and para-substituted aromatic backbones and tert-butyl or phenyl sidechains. The dimers were synthesized by using a “submonomer method” on solid phase, by applying a simplified common set of reaction conditions. X-ray crystallographic analysis of two of these dimers disclosed that the tert-butyl sidechain invokes a cis amide conformation
我们已经有效地合成了 36 种具有邻位、间位和对位取代的芳族主链和叔丁基或苯基侧链的芳肽二聚体。二聚体是通过在固相上使用“亚单体方法”,通过应用一组简化的常用反应条件合成的。对这些二聚体中的两个进行 X 射线晶体学分析表明,叔丁基侧链引起顺式酰胺构象,周围芳族主链的结构相对更紧密,而苯基侧链产生具有更开放的反式酰胺构象。 ,周围芳香骨架的扩展结构。
Aromatic Oligoamides with a Rare<i>ortho</i>-Connectivity: Synthesis and Study of<i>ortho</i>-Arylopeptoids
作者:Thomas Hjelmgaard、John Nielsen
DOI:10.1002/ejoc.201300398
日期:2013.6
more congested backbone structure resulting from the ortho-connectivity pattern. Intriguingly, tert-butyl and phenyl sidechains offer complete control over the amide conformations; whereas arylopeptoid residues with tert-butyl sidechains adopt a 100 % cis amide conformation, the opposite 100 % trans amide conformation was observed in arylopeptoids with phenyl sidechains. The tert-butyl moiety can