Synthesis, Ion Complexation Study, and 3D-Structural Analysis of Peptides Based on Crown-Carrier,Cα-Methyl-L-DOPA Amino Acids
作者:Karen Wright、Rachid Anddad、Jean-François Lohier、Vincent Steinmetz、Michel Wakselman、Jean-Paul Mazaleyrat、Fernando Formaggio、Cristina Peggion、Marta De Zotti、Timothy A. Keiderling、Rong Huang、Claudio Toniolo
DOI:10.1002/ejoc.200700917
日期:2008.3
terminally protected model peptides to the hexamer level, based on four novel, crown-ether containing Cα-methyl-L-DOPA (L-Mdp) amino acid residues, namely L-Mdp[15-C-5], L-Mdp[18-C-6], L-Mdp[benzo-24-C-8] and L-Mdp[(S)-Binol-20-C-6], combined with either L-Ala or L-Ala/Aib or Gly/Aib, were synthesized by solution methods. An ESI-MS analysis of their alkali metal cation complexation ability was carried out
选定系列的六聚体水平的末端保护模型肽,基于四个新的、含 Cα-甲基-L-多巴 (L-Mdp) 氨基酸残基的冠醚,即 L-Mdp[15-C-5]、L -Mdp[18-C-6]、L-Mdp[benzo-24-C-8] 和 L-Mdp[(S)-Binol-20-C-6],与 L-Ala 或 L-Ala 结合/Aib 或 Gly/Aib,通过溶液法合成。对其碱金属阳离子络合能力进行了 ESI-MS 分析。它们的 FTIR 吸收、1H NMR、ECD 和 VCD 光谱特性表明所有这些冠状氨基酸都是(左旋)β-转角和 310-螺旋结构的强诱导剂。(© Wiley-VCH Verlag GmbH & Co. KGaA , 69451 德国魏因海姆, 2008)