Substitution Effect on the One- and Two-photon Sensitivity of DMAQ “Caging” Groups
作者:Morgane Petit、Christine Tran、Thomas Roger、Thibault Gallavardin、Hamid Dhimane、Francisco Palma-Cerda、Mireille Blanchard-Desce、Francine C. Acher、David Ogden、Peter I. Dalko
DOI:10.1021/ol3031704
日期:2012.12.21
systematic SAR study of a “caging” group showed a strong influence of the position of the donor dimethylamino group on the efficiency of photolysis of the DMAQ (2-hydroxymethylene-(N,N-dimethylamino)quinoline) caged acetate under one-photon near-UV or two-photon near-IR excitation. Photorelease of l-glutamate by the most efficient 8-DMAQ derivative strongly and efficiently activated glutamate receptors
Substituent Effects on the Sensitivity of a Quinoline Photoremovable Protecting Group to One- and Two-Photon Excitation
作者:M. Jarrett Davis、Christopher H. Kragor、Khalilah G. Reddie、Hunter C. Wilson、Yue Zhu、Timothy M. Dore
DOI:10.1021/jo802658a
日期:2009.2.20
Photoremovableprotectinggroups that can reveal biologically important functional groups through one- and two-photon excitation (1PE and 2PE, respectively) have promise in regulating physiological function in a temporally and spatially restricted manner. Only a few chromophores have sufficient sensitivity to 2PE suitable for use as “caging groups” in physiology experiments. It would be useful to develop
Inspired by the 8-dimethylaminoquinoline (8-DMAQ) caging chromophore, photocleavable 8-aminoquinoline derivatives were prepared with the aim of furnishing a robust synthetic pathway for novel cage scaffolds. The four-step versatile process allows a facile introduction of various amino-substituents and its overall yield is feasible for scale-up. The novel photocages showed high photolysis efficiency