98303-85-6Relevant academic research and scientific papers
Synthesis and fluorescence properties of 4-diarylmethylene analogues of the green fluorescent protein chromophore
Ikejiri, Masahiro,Matsumoto, Kousuke,Hasegawa, Hiraku,Yamaguchi, Daisuke,Tsuchino, Moe,Chihara, Yoshiko,Yamaguchi, Takao,Mori, Kazuto,Imanishi, Takeshi,Obika, Satoshi,Miyashita, Kazuyuki
, p. 4987 - 4998 (2015/06/23)
New green fluorescent protein (GFP) chromophore analogues, namely 4-(diarylmethylene)imidazolinones (DAINs), were readily synthesized under weakly acidic conditions using a novel condensation reaction between methyl imidate (or thioimidate) and ethyl N-(diarylmethylene)glycinate. DAINs showed notable fluorescence properties. Although they were nearly non-fluorescent in the solution, visible emissions were detected in most of their frozen solution states and crystalline powder states. Therefore, control of the molecular motions significantly affected emissions by DAINs. Comparison of the fluorescence properties of DAIN 5a with those of the corresponding GFP-chromophore analogues 8 revealed that 5a possessed superior solid-state fluorescence properties.
Synthesis and structure-activity relationship studies of theophylline analogs on population responses in the rat hippocampus in vitro
Ananthalakshmi, Kethireddy V.V.,Bartl, Tomas,Aziza, Mohammed H.,Novotny, Ladislav,Marek, Radek,Benes, Ludek,Kombian, Samuel B.
experimental part, p. 8142 - 8150 (2009/04/11)
We synthesized several theophylline analogs and tested the hypothesis that these compounds may be nootropic or cognitive enhancers by examining their effects on evoked population spikes recorded extracellularly in the CA1 region of the rat hippocampus. Whereas the length of the carbon chain on N7 had no effect, different size of the terminal lactam ring strongly influenced neuroactivity. Our results suggest that hexahydroazepin-2-one analogs have potential for further development as cognitive enhancers.
