Long-Range Intramolecular S → N Acyl Migration: A Study of the Formation of Native Peptide Analogues via 13-, 15-, and 16-Membered Cyclic Transition States
作者:Khanh Ha、Mamta Chahar、Jean-Christophe M. Monbaliu、Ekaterina Todadze、Finn K. Hansen、Alexander A. Oliferenko、Charles E. Ocampo、David Leino、Aaron Lillicotch、Christian V. Stevens、Alan R. Katritzky
DOI:10.1021/jo2023125
日期:2012.3.16
The intramolecular long-range S → Nacyl migration via 13-, 15-, and 16-membered cyclic transition states to form native tetra- and pentapeptide analogues was studied on S-acylcysteine peptides containing β- or γ-amino acids. The pH-dependency study of the acyl migration via a 15-membered cyclic transition state indicated that the reaction is favored at a pH range from 7.0 to 7.6. Experimental observations