A Novel Methodology for Synthesis of 1,5,6-Trisubstituted 2(1<i>H</i>)-Pyrazinones of Biological Interest
作者:Ryosuke Saijo、Hiroshi Sekiya、Eiji Tamai、Ken-ichi Kurihara、Jun Maki、Hiroshi Sakagami、Masami Kawase
DOI:10.1248/cpb.c16-00830
日期:——
In this report, we describe a new method for the synthesis of densely functionalized 2(1H)-pyrazinones. Treatment of mesoionic 1,3-oxazolium-5-olates with carbanions derived from activated methylene isocyanides (p-toluenesulfonylmethyl isocyanide (TosMIC) and ethyl isocyanoacetate) causes a novel ring transformation affording 2(1H)-pyrazinones in moderate to high yields. The cytotoxicity and antibacterial
在这份报告中,我们描述了一种新的合成功能密集的2(1H)-吡嗪酮的方法。用衍生自活化亚甲基异氰酸酯(对甲苯磺酰基甲基异氰酸酯(TosMIC)和异氰基乙酸乙酯)的碳负离子处理中离子1,3-恶唑鎓5-酸酯,会引起新的环转化,从而以中等至高收率提供2(1H)-吡嗪酮。研究了一些所得产物的细胞毒性和抗菌活性,并且某些产物表现出肿瘤特异性的细胞毒性。