Synthesis, reactions, and antimicrobial activity of some novel pyrazolo[3,4‐<i>d</i>]pyrimidine, pyrazolo[4,3‐<i>e</i>][1,2,4]triazolo[1,5‐<i>c</i>]pyrimidine, and pyrazolo[4,3‐<i>e</i>][1,2,4]triazolo[3,4‐<i>c</i>]pyrimidine derivatives
作者:Hamdi M. Hassaneen、Fatma M. Saleh、Tayseer A. Abdallah、Yasmin Sh. Mohamed、Enas M. Awad
DOI:10.1002/jhet.3835
日期:2020.2
Hydrazino as well as imino‐amino derivatives undergo condensation, cyclization, and cycloaddition reactions to give pyrazolo[3,4‐d]pyrimidine 18‐21, pyrazolo[4,3‐e][1,2,4]triazolo‐[3,4‐c]pyrimidine 22‐27, and pyrazolo[3′,4′:4,5]pyrimido[1,6‐b][1,2,4]triazine 42‐44 derivatives. Antimicrobial studies are performed using two Gram‐positive bacteria and two Gram‐negative bacteria. Data indicated that compounds
的治疗Ñ苯基-取代的benzenecarbo-腙酰氯1A - d与丙二腈在乙醇钠溶液,得到5-氨基-4-氰基吡唑衍生物2 - 5。化合物2 - 5转化为formidate衍生物6 - 9处理后与TEOF在乙酸酐。后者产物的反应6 - 9与水合肼,得到亚氨基氨基衍生物10 - 13,将其转化为肼衍生物14 - 17通过与水合肼回流。肼基以及亚氨基氨基衍生物进行缩合,环化,和环加成反应,得到吡唑并[3,4- d ]嘧啶18 - 21,吡唑并[4,3- ë ] [1,2,4]三唑并[3 ,4- ç ]嘧啶22 - 27,和吡唑并[3',4':4,5]嘧啶并[1,6- b ] [1,2,4]三嗪42 - 44个衍生物。使用两种革兰氏阳性细菌和两种革兰氏阴性细菌进行抗微生物研究。数据表明,化合物5,28D,29B,和31D正在探索提高对所有测试菌株的抗菌效果。化合物28D是最有希望的抗菌剂,分别对付