1.
Org Lett
; 10(9): 1671-4, 2008 May 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-18396883
RESUMO
Appending L-alanine to the terminal positions of a helical azobenzene oligomer produced a P helical bias, which increased with oligomer length. Irradiation gave rise to E-->Z isomerization of the terminal azo linkages, which displaced the stereogenic center of L-Ala from the helix backbone and suppressed chiral induction. Theoretical simulations of the CD spectrum of the P helical conformation are in qualitative agreement with the experimental spectra.