Design, synthesis, structure and properties of an α-helix cap template derived from N-[(2S)-2-chloropropionyl]-(2S)-Pro-(2R)-Ala-(2S,4S)-4-thioPro-OMe which initiates α-helical structures
作者:David Gani、Arwel Lewis、Trevor Rutherford、John Wilkie、Iain Stirling、Thierry Jenn、Martin D. Ryan
DOI:10.1016/s0040-4020(98)00991-0
日期:1998.12
were characterised by NMR spectroscopy and restrained simulated annealing. In deuterochloroform solution at low temperature, separate sets of NMR signals were observed for two rapidly interconverting helical conformational isomers of the thioether macrocycle which possessed an appended trialkylammonium ion. A similar time-averaged conformation was also observed in aqueous solution. At −80 °C in d2-dichloromethane