Synthesis of novel thiazole-based 8,9-dihydro-7H-pyrimido[4,5-b][1,4]diazepines as potential antitumor and antifungal agents
作者:Juan Ramírez、Laura Svetaz、Jairo Quiroga、Rodrigo Abonia、Marcela Raimondi、Susana Zacchino、Braulio Insuasty
DOI:10.1016/j.ejmech.2015.01.053
日期:2015.3
A new series of novel thiazole-based 8,9-dihydro-7H-pyrimido[4,5-b][1,4]diazepines 6a–g and 7a–g were obtained with high regioselectivity from the reaction of triamino- or tetraaminopyrimidines 4 and 5 with α,β-unsaturated carbonyl compounds 3a–g based on 2,4-dichlorothiazol-5-carbaldehyde 1. Twelve of the synthesized compounds were selected and tested by US National Cancer Institute (NCI) for their
从三氨基或氟代氨基的反应中,具有很高的区域选择性,从而获得了一系列新的基于噻唑的8,9-二氢-7 H-嘧啶[4,5- b ] [1,4]二氮杂6a – g和7a – g。四氨基嘧啶4和5以及基于2,4-二氯噻唑-5-甲醛1的α,β-不饱和羰基化合物3a – g。选择了十二种合成的化合物,并由美国国家癌症研究所(NCI)测试了它们对60种不同的人类肿瘤细胞系的抗肿瘤活性。化合物7d和7g显示出重要的胃肠道在体外试验中,分别有50个范围为1.28–2.98μM和0.35–2.78μM 。此外,还测试了6a – g和7a – g对临床重要真菌白色念珠菌和新型隐球菌的抗真菌特性。尽管这些化合物显示出对中等活动白色念珠菌,2-氨基衍生物7A -克并且主要7A和7B,显示出对抗的标准化和临床分离物的高活性新型隐球菌与MIC 50 = 7.8-31.2微克/毫升,MIC80 = 15.6–31.2μg/