Utilization of the Heavy Atom Effect for the Development of a Photosensitive 8-Azacoumarin-Type Photolabile Protecting Group
作者:Hikaru Takano、Tetsuo Narumi、Wataru Nomura、Toshiaki Furuta、Hirokazu Tamamura
DOI:10.1021/acs.orglett.5b02720
日期:2015.11.6
photolabile protecting groups was achieved by iodine substitution. The newly identified 7-hydroxy-6-iodo-8-azacoumarin (8-aza-Ihc)-caged acetate showed excellent photolytic efficiency, significantly higher than that of the corresponding bromine-containing coumarin- and azacoumarin-type caging groups. The results provide a solid approach to improving the photosensitivity of photolabile protecting groups.
通过碘取代,香豆素型光不稳定保护基的光化学性质得到了显着改善。新鉴定的7-羟基-6-碘-8-氮杂香豆素(8-氮杂-Ihc)笼罩的乙酸盐显示出优异的光解效率,显着高于相应的含溴香豆素和氮杂香豆素型笼罩组。结果提供了改善光不稳定保护基的光敏性的可靠方法。