A practical and general method for the Biginelli cyclocondensation of guanidine with aldehydes and β-dicarbonyl compounds is described and illustrated with the synthesis of a set of 26 functionalized 2-amino-3,4-dihydropyrimidines. The simple protocol involves the microwave-mediated reaction of a twofold excess of guanidine hydrochloride with the required reaction partners in an alcohol at 120 °C
用一组 26 个功能化的 2-氨基-3,4-二氢嘧啶的合成描述和说明了胍与醛和 β-二羰基化合物的 Biginelli 环缩合反应的实用和通用方法。简单的协议涉及双倍过量的盐酸胍与所需的反应伙伴在 120 °C 的酒精中的微波介导反应。收率通常良好,反应时间短,后处理简单。其范围比在常规加热下进行的类似反应要广泛得多。
Antibacterial Activity of Functionalized Dihydropyrimidines
申请人:WiSys Technology Foundation, Inc.
公开号:US20220220082A1
公开(公告)日:2022-07-14
Emmacin-related substituted dihydropyrimidine compounds demonstrate potency at low concentrations and inhibit Methicillin-resistant
S. aureus
growth. One such compound is: