A synthetic procedure for the preparation of imidazolidinediones by the base-catalyzed cyclization of propargylureas is described. This method appears to be the most versatile way of obtaining these compounds containing tertiary groups substituted on ring-nitrogen number 3. One of these derivatives, 3-tert-butyl-5,5-dimethyl-2,4-imidazolidinedione (1a), has shown a moderate level of subcutaneous metrazole
描述了通过炔丙基
脲的碱催化环化制备
咪唑烷二酮的合成方法。该方法似乎是获得这些化合物的最通用方法,这些化合物包含在3号环氮原子上取代的叔基团。这些衍
生物之一是5,5-二甲基-2,4-
咪唑烷二酮(1a)的3-叔丁基,根据美国国家神经病学,传染病和中风研究所的研究,在小鼠的对照筛查中已显示出中等
水平的皮下甲拉唑癫痫发作阈值活性(scMet表示控制小癫痫发作的潜力)。