Fluorescent visualization of the conformational change of aromatic amide or urea induced by N-methylation
作者:Tomoya Hirano、Takashi Osaki、Shinya Fujii、Daisuke Komatsu、Isao Azumaya、Aya Tanatani、Hiroyuki Kagechika
DOI:10.1016/j.tetlet.2008.11.044
日期:2009.1
The conformational change of amide structure of benzanilide or urea structure of N,N′-diphenylurea induced by methylation of the secondary nitrogen was visualized by introduction of pyrene moieties on the benzene ring. In contrast to the extended trans-form of secondary amide and urea, which showed monomer fluorescence emission of pyrene, the corresponding N-methylated compounds exist in cis-form,
通过在苯环上引入of部分,可以看出由仲氮甲基化引起的苯甲酰苯胺的酰胺结构或N,N'-二苯基脲的尿素结构的构象变化。与仲酰胺和脲的延长的反式表现出showed的单体荧光发射相反,相应的N-甲基化化合物以顺式存在,表现出受激准分子发射。