Microwave assisted synthesis of dihydrobenzo[4,5]imidazo[1,2-a]pyrimidin-4-ones; synthesis, in vitro antimicrobial and anticancer activities of novel coumarin substituted dihydrobenzo[4,5]imidazo[1,2-a]pyrimidin-4-ones
作者:Kallimeledoddi B. Puttaraju、Kalegowda Shivashankar、Chandra、M. Mahendra、Vijaykumar P. Rasal、Ponnuru N. Venkata Vivek、Khushboo Rai、Maibam Beebina Chanu
DOI:10.1016/j.ejmech.2013.07.015
日期:2013.11
article describes the synthesis of dihydrobenzo[4,5]imidazo[1,2-a]pyrimidin-4-one (2a–h) under microwave irradiation. The product was obtained in excellent yield (74–94%) in a shorter reaction time (2 min). These molecules (2a, b) further reacted with various substituted 4-bromomethylcoumarins (3a–f) to yield a new series of coumarin substituted dihydrobenzo[4,5]imidazo[1,2-a]pyrimidin-4-ones (4a–h)
本文介绍了微波辐射下二氢苯并[4,5]咪唑并[1,2 - a ]嘧啶-4-酮(2a – h)的合成。在较短的反应时间(2分钟)内,以优异的收率(74–94%)获得了该产品。这些分子(2a,b)与各种取代的4-溴甲基香豆素(3a – f)进一步反应,生成了一系列香豆素取代的二氢苯并[4,5]咪唑并[1,2- a ]嘧啶-4-酮(4a – h)。通过光谱研究证实了所有合成化合物的结构,并对其进行了体外筛选对三名革兰氏阳性菌即抗菌活性。,金黄色葡萄球菌,粪肠球菌,链球菌和三个革兰氏阴性菌即,大肠杆菌,肺炎克雷伯氏菌,铜绿假单胞菌和抗真菌活性白色念珠菌,黑曲霉,烟曲霉,黑曲霉黄酮,尖孢镰刀菌,产黄青霉和对道尔顿腹水性淋巴瘤(DAL)细胞系的抗癌活性。 通常,所有化合物均具有比抗菌剂更好的抗真菌特性。香豆素取代的二氢苯并[4,5]咪唑并[1,2 - a ]嘧啶-4-酮(4g)(R = i -Pr,R