Incorporation of Ahc into Model Dipeptides as an Inducer of a β-Turn with a Distorted Amide Bond. Conformational Analysis
作者:Alberto Avenoza、Jesús H. Busto、Jesús M. Peregrina、Fernando Rodríguez
DOI:10.1021/jo016406r
日期:2002.6.1
The proline residue of dipeptides Ser-Pro and Pro-Ser has been replaced by 7-azabicyclo[2.2.1]heptane-1-carboxylicacid (Ahc), a conformationally restricted analogue of proline that is capable of mimicking distorted amides. The conformational analysis of the new peptides in the solid state revealed that the Ahc-Ser sequence displays a type I beta-turn, which includes a distorted amide bond. In contrast