Bip: a Cα-Tetrasubstituted, Axially Chiral α-Amino Acid. Synthesis and Conformational Preference of Model Peptides
作者:Fernando Formaggio、Marco Crisma、Claudio Toniolo、Luba Tchertanov、Jean Guilhem、Jean-Paul Mazaleyrat、Anne Gaucher、Michel Wakselman
DOI:10.1016/s0040-4020(00)00801-2
日期:2000.10
biphenyl-based, Cα-tetrasubstituted, cyclic, axially chiral α-amino acid Bip we synthesised by solution methods a large set of model peptides, including the homo-oligomer series, to the pentamer level. All of the peptides were fully characterised and their preferred conformation was assessed in solution by means of a FT-IR absorption and 1H NMR study. Results of X-ray diffraction analyses of two Bip derivatives
通过使用最近提出联苯型,C α -tetrasubstituted,环状,轴向手性α氨基酸的Bip我们以溶液的方法合成一大组模型肽,包括均聚低聚物系列,五聚体水平。所有肽均已得到充分表征,并通过FT-IR吸收和1 H NMR研究评估了其在溶液中的优选构象。还介绍了两个Bip衍生物和一个序列为–Gly–Bip–Gly–的末端受保护的三肽的X射线衍射分析结果。我们的发现表明,Bip倾向于支持β-turn和3 10-螺旋结构,尽管在短肽中,完全延伸的(C 5)构象也会在某种程度上被填充。