Carbopeptoids: peptides and diketopiperazines incorporating the anomeric centre of mannopyranose
作者:Daniel D. Long、Richard J. Tennant-Eyles、Juan C. Estevez、Mark R. Wormald、Raymond A. Dwek、Martin D. Smith、George W. J. Fleet
DOI:10.1039/b009940f
日期:——
an anomeric α-amino acid component is described. An N-acylated bicyclic [2.2.2] lactone, formed via an oxidative ring closure, provides access to a new class of glycopeptide analogues of D-mannopyranose and determines the anomeric configuration of compounds derived therefrom. The mannopyranose diketopiperazine may be equilibrated to the more stable furanose form under basic conditions; in general,
描述了一种合成具有异头α-氨基酸组分的D-甘露吡喃糖衍生物的方法。一个Ñ -acylated双环[2.2.2]内酯通过氧化闭环形成,提供了进入新类别的糖肽 类似物 D-甘露吡喃糖并确定由此衍生的化合物的异头构型。这甘露吡喃糖二酮哌嗪在基本条件下可以平衡为更稳定的呋喃糖形式;一般来说,甘露吡喃糖 在异头位置含有α-氨基酸部分的衍生物比甘露呋喃糖异构体的稳定性差。