Development of carbamate-tethered coumarins as phototriggers for caged nicotinamide
作者:Pauline Bourbon、Qian Peng、Guillermo Ferraudi、Cynthia Stauffacher、Olaf Wiest、Paul Helquist
DOI:10.1016/j.bmcl.2013.09.067
日期:2013.12
The syntheses of 7-diethylaminocoumarin- or modified DEACM-nicotinamide and 6-bromo-7-methoxycoumarin- or BMCM-nicotinamide have been accomplished by reaction of nicotinoyl isocyanate with the corresponding coumarin allylic alcohol derivatives. The resulting compounds contain an N-acyl O-alkyl carbamate as a new type of linkage for the caging of nicotinamide with a coumarin phototrigger, which undergoes
7-二乙基氨基香豆素或改性的DEACM-烟酰胺和6-溴-7-甲氧基香豆素-或BMCM-烟酰胺的合成已通过使烟酰基异氰酸酯与相应的香豆素烯丙基醇衍生物反应来完成。所得化合物含有N-酰基O-烷基氨基甲酸酯,作为一种新型连接键,用于用香豆素光引发剂引发烟酰胺的笼住,该香豆素光引发剂在光解时发生裂解。我们基于NBO和TD-FT计算的特定笼状烟酰胺设计可预测吸收波长和光裂解潜能。这项工作提供了一种潜在的通用方法,用于笼罩具有香豆素光不稳定保护基的酰胺。