Competing Pathways in the Photo-Favorskii Rearrangement and Release of Esters: Studies on Fluorinated <i>p</i>-Hydroxyphenacyl-Caged GABA and Glutamate Phototriggers
作者:Kenneth Stensrud、Jihyun Noh、Karl Kandler、Jakob Wirz、Dominik Heger、Richard S. Givens
DOI:10.1021/jo900139h
日期:2009.8.7
Three new trifluoromethylated p-hydroxyphenacyl (pHP)-caged γ-aminobutyric acid (GABA) and glutamate (Glu) derivatives have been examined for their efficacy as photoremovable protecting groups in aqueous solution. Through the replacement of hydrogen with fluorine, e.g., a m-trifluoromethyl or a m-trifluoromethoxy versus m-methoxy substituents on the pHP chromophore, modest increases in the quantum