Microwave induced synthesis of novel 8,9-dihydro-7H-pyrimido[4,5-b][1,4]diazepines as potential antitumor agents
作者:Braulio Insuasty、Fabián Orozco、Jairo Quiroga、Rodrigo Abonia、Manuel Nogueras、Justo Cobo
DOI:10.1016/j.ejmech.2007.12.005
日期:2008.9
4-amino-8-aryl-6-(1,3-benzodioxol-5-yl)-8,9-dihydro-7H-pyrimido[4,5-b][1,4]diazep ines 5a-f were obtained regioselectively from the reaction of 4,5,6-triaminopyrimidine 1 with 1equiv of methylenedioxychalcones 2a-f and 3a-f, under microwave irradiation. Detailed NMR measurements confirm the high regioselectivity of this reaction. These compounds have been evaluated in the US National Cancer Institute (NCI) for
一系列新的外消旋4-氨基-6-芳基-8-(1,3-苯并二恶唑-5-基)-8,9-二氢-7H-嘧啶[4,5-b] [1,4]二氮杂in 4a-f和4-氨基-8-芳基-6-(1,3-苯并二恶唑-5-基)-8,9-二氢-7H-嘧啶基[4,5-b] [1,4]二氮杂in 5a -f是在微波辐射下由4,5,6-三氨基嘧啶1与1当量的亚甲基二氧基查耳酮2a-f和3a-f的区域选择性获得的。详细的NMR测量证实了该反应的高区域选择性。这些化合物已在美国国家癌症研究所(NCI)中评估了其抑制大约60种不同人类肿瘤细胞系的能力,其中4e,5a和5b分别对47、11和37个癌细胞系表现出显着的活性。体外测定,最重要的GI50值范围为0.068至0.35 microM。