Microwave-assisted green synthesis of new imidazo[2,1-b]thiazole derivatives and their antimicrobial, antimalarial, and antitubercular activities
作者:Rajesh H. Vekariya、Kinjal D. Patel、Mayur K. Vekariya、Neelam P. Prajapati、Dhanji P. Rajani、Smita D. Rajani、Hitesh D. Patel
DOI:10.1007/s11164-017-2985-5
日期:2017.11
Abstract We have synthesized some imidazo[2,1-b]thiazole derivatives by reaction of 1-(2-amino-4-methylthiazol-5-yl)ethanone or ethyl 2-amino-4-methylthiazole-5-carboxylate with α-bromo aralkyl ketones (phenacyl bromides) in presence of polyethylene glycol-400 (PEG-400) as efficient, inexpensive, biodegradable, and green reaction medium and catalyst (dual nature) under Microwave Irradiation (MWI) at
摘要 我们通过1-(2-氨基-4-甲基噻唑-5-基)乙酮或2-氨基-4-甲基噻唑-5-羧酸乙酯与α-溴的反应合成了一些咪唑并[ 2,1- b ]噻唑衍生物聚乙二醇-400(PEG-400)存在下的芳烷基酮(苯甲酰溴)作为有效,廉价,可生物降解的绿色反应介质和催化剂(双重性质),在微波辐射(MWI)下于300 W以及在加热下在90°C下。此外,我们还通过乙酰丙酮/乙酰乙酸乙酯与N的一锅反应,合成了1-(2-氨基-4-甲基噻唑-5-基)乙酮和2-氨基-4-甲基噻唑-5-羧酸乙酯-溴溴代琥珀酰亚胺(NBS)和硫脲在PEG-400的存在下于180 W微波辐射下进行。对所有合成的化合物进行了抗菌和抗疟活性筛选。发现所有化合物均表现出良好的至优异的抗菌活性,并且一些类似物表现出良好的抗疟活性。 图形概要