已经开发了一种有效的串联途径来合成环嗪家族的三氮杂环戊[ cd ]茚满酮衍生物。通过Groebke–Blackburn–Bienaymé反应(涉及碳酸钾促进的分子内氨解),以中等至良好的收率获得了目标化合物。反过来,这将为该有用的反应在合成包含咪唑并[1,2-a]吡啶环的结构多样的多杂环骨架中的广泛应用奠定基础。
已经开发了一种有效的串联途径来合成环嗪家族的三氮杂环戊[ cd ]茚满酮衍生物。通过Groebke–Blackburn–Bienaymé反应(涉及碳酸钾促进的分子内氨解),以中等至良好的收率获得了目标化合物。反过来,这将为该有用的反应在合成包含咪唑并[1,2-a]吡啶环的结构多样的多杂环骨架中的广泛应用奠定基础。
Combinatorial Discovery of Fluorescent Pharmacophores by Multicomponent Reactions in Droplet Arrays
作者:Olga N. Burchak、Laurent Mugherli、Mariano Ostuni、Jean Jacques Lacapère、Maxim Y. Balakirev
DOI:10.1021/ja204016e
日期:2011.7.6
Fluorescence imaging in clinical diagnostics and biomedical research relies to a great extent on the use of small organic fluorescent probes. Because of the difficulty of combining fluorescent and molecular-recognition properties, the development of such probes has been severely restricted to a number of well-known fluorescent scaffolds. Here we demonstrate that autofluorescing druglike molecules are a valuable source of bioimaging probes. Combinatorial synthesis and screening of chemical libraries in droplet microarrays allowed the identification of new types of fluorophores. Their concise and clean assembly by a multicomponent reaction presents a unique potential for the one-step synthesis of thousands of structurally diverse fluorescent molecules. Because they are based upon a druglike scaffold, these fluorophores retain their molecular recognition potential and can be used to design specific imaging probes.