作者:Christine Tran、Nawel Berqouch、Hamid Dhimane、Guillaume Clermont、Mireille Blanchard-Desce、David Ogden、Peter I. Dalko
DOI:10.1002/chem.201604500
日期:2017.2.3
Quadrupolarprobes derived from 8‐dimethylamino‐quinoline (8‐DMAQ) having a pegylated fluorene core were prepared and studied under “one‐photon” (λ=365 nm) and “two‐photon” (TP) (λ=730 nm) irradiation conditions. Compound 1 a was identified as the most efficient probe by UV activation that showed sequential release of acetic acid as a model. Although the probe showed high two‐photon absorption it stayed
Two-Photon “Caging” Groups: Effect of Position Isomery on the Photorelease Properties of Aminoquinoline-Derived Photolabile Protecting Groups
作者:Christine Tran、Thibault Gallavardin、Morgane Petit、Riadh Slimi、Hamid Dhimane、Mireille Blanchard-Desce、Francine C. Acher、David Ogden、Peter I. Dalko
DOI:10.1021/ol5035035
日期:2015.2.6
High two-photon photolysis cross sections and water solubility of probes are important to avoid toxicity in biomedical applications of photolysis. Systematic variation of the position of a carboxyl electron-withdrawing group (EWG) on photolysis of 8-dimethylaminoquinoline protecting groups identified the C5-substituted isomer as a privileged dipole. The 5-benzoyl-8-DMAQ substitution yields a caging
高的双光子光解截面和探针的水溶性对于避免光解在生物医学应用中的毒性很重要。在对8-二甲基氨基喹啉保护基进行光解时,羧基吸电子基团(EWG)位置的系统变化将C5取代的异构体确定为优先偶极子。的5-苯甲酰基-8- DMAQ替代产生一个封闭基团具有增强的双光子解笼锁的横截面(δ û = 2.0 GM)和良好的水溶解度(ç ≤50毫米,pH值7.4)中。