Design, Synthesis and Biological Evaluation of Thiophene Based Pyrimidin-4-one Derivatives as New Type of Antimicrobial Agents
作者:B. Pullarao、S.D. Khasim Sharif、D. Ravi Kumar、D. Ramachandran
DOI:10.14233/ajchem.2016.19861
日期:——
In the present investigation, a novel series of 3-(benzylidene-amino)-2-methyl-5-phenyl-3H-thieno [2,3-d]pyrimidin-4-one and its derivatives (5a-i) were synthesized by condensation reaction from the final intermediate, 3-amino-2-methyl-5-phenyl-3H-thieno[2,3-d]pyrimidin-4-one (4). The synthesis of the title compounds commenced from commercially available 2-amino-4-phenyl-thiophene-3-carboxylic acid ethyl ester (1) and by involving 2-amino-4-phenyl-thiophene-3-carboxylic acid (2) and 2-methyl-5-phenyl-thieno[2,3-d][1,3]oxazin-4-one (3) as reactive intermediates. The chemical structures of synthesized compounds were characterized by IR, 1H NMR, mass spectral data and elemental analysis. The final compounds were used to screen for their antifungal activity against two strains of fungi.
本研究以最终中间体 3-氨基-2-甲基-5-苯基-3H-噻吩并[2,3-d]嘧啶-4-酮(4)为原料,通过缩合反应合成了一系列新型 3-(苄基氨基)-2-甲基-5-苯基-3H-噻吩并[2,3-d]嘧啶-4-酮及其衍生物(5a-i)。标题化合物的合成始于市售的 2-氨基-4-苯基噻吩-3-羧酸乙酯(1),并以 2-氨基-4-苯基噻吩-3-羧酸(2)和 2-甲基-5-苯基噻吩并[2,3-d][1,3]恶嗪-4-酮(3)为反应中间体。通过红外光谱、1H NMR、质谱数据和元素分析对合成化合物的化学结构进行了表征。最终化合物被用于筛选其对两种真菌菌株的抗真菌活性。