中离子异恶唑并[2,3- a ]嘧啶二酮和1,3,4-恶二唑并[3,2- a ]嘧啶二酮作为潜在的腺苷拮抗剂
摘要:
制备了两种新颖的介电环系统的几种衍生物,即异恶唑并[2,3- a ]嘧啶二酮和1,3,4-恶二唑并[3,2- a ]嘧啶二酮,作为腺苷拮抗剂进行评价。当6-位(即对应于嘌呤1-位的那个位置)被烷基取代时,两个环系统都相对稳定,而当该位置未被取代时,两个环系统都不是稳定的。6-未取代的非内消旋异恶唑并嘧啶二酮的实例表现出相似的行为。作为腺苷拮抗剂,发现中离子化合物的效力不及之前评估的中离子噻二唑[3,2- a ]嘧啶二酮类似物。
Mesoionic Purinone Analogs IV: Synthesis and In Vitro Antibacterial Properties of Mesoionic Thiazolo[3,2-a]pyrimidin-5,7-diones and Mesoionic 1,3,4-Thiadiazolo[3,2-a]pyrimidin-5,7-diones
作者:R.A. Coburn、R.A. Glennon
DOI:10.1002/jps.2600621110
日期:1973.11
Derivatives of two members of a new and unusual class of heterocycles, termed mesoionic purinone analogs, were synthesized and examined for in vitro antibacterial activity. Mesoionic thiazolo[3,2-a]pyrimidin-5,7-diones and mesoionic1,3,4-thiadiazolo[3,2-a]pyrimidin-5,7-diones, which are isoconjugate with xanthine, were found to exhibit antibacterial activity against both Gram-negative and Gram-positive