Cyclic peptides containing a δ-sugar amino acid—synthesis and evaluation as artificial receptors
作者:Johan F. Billing、Ulf J. Nilsson
DOI:10.1016/j.tet.2004.11.024
日期:2005.1
An Fmoc-protected δ-sugar amino acid, prepared by oxidation of a glucosamine derivative, was coupled to three different tripeptide tert-butyl esters (H-Tyr-Tyr-Tyr-OtBu, H-Tyr-Glu(OBzl)-Tyr-OtBu and H-Tyr-Arg(Mtr)-Tyr-OtBu) and the resulting sugar amino acid/amino acid hybrids were transformed into dimers that were subsequently cyclized to give three C2-symmetric macrocycles. The macrocycles were deprotected
通过氧化葡糖胺衍生物制备的Fmoc保护的δ糖氨基酸与三种不同的三肽叔丁酯(H-Tyr-Tyr-Tyr-O t Bu,H-Tyr-Glu(OBzl-的Tyr-O吨Bu和H-酪氨酸-精氨酸(MTR)-Tyr-O吨卜),将所得糖氨基酸/氨基酸杂交转化成随后被环化,得到3二聚体c ^ 2 -对称的大环化合物。将大环去保护,并检查它们对对硝基苯基糖苷,核苷酸和嘌呤的结合特性。在筛选的配体中,只有一些嘌呤显示出弱但显着的结合。