Synthesis and Antifungal Activity of Some Novel (E)-2, 3-Dihydro-3- [(phenylamino) methylene]-4H-1-benzothiopyran-4-ones
作者:Liu Xiao-Ming、Yang Geng-Liang、Song Ya-Li、Liu Jie-Jie、Wang Yang、Zhang Dong- Nuan
DOI:10.2174/1570178611310030016
日期:2013.4.1
A series of novel (E)-2,3-dihydro-3-[(phenylamino)methylene]-4H-1-benzothiopyran-4-ones has been synthesized
by using 2,3-dihydro-4H-1-benzothiopyran-4-ones as the starting material. The structures of the new compounds are
characterized by UV-vis, IR, HRMS, 1H NMR, and 13C NMR. 2D NMR spectroscopic studies revealed that at room temperature,
these compounds rather exist in the keto-enamine than in the Schiff base form. The synthesized compounds were
evaluated against two species of fungi in vitro by agar double dilution method. The results of antifungal screening revealed
that the MIC value of (E)-8-chloro-2,3-dihydro-3-[(4-nitrophenylamino)methylene]-4H-1-benzothiopyran-4-one
(4j) against Candida albicans is 32 μg·ml-1 while the control Fluconazole is 64 μg·ml-1.
一系列新型(E)-2,3-二氢-3-[(苯氨基)亚甲基]-4H-1-苯并噻吩-4-酮通过2,3-二氢-4H-1-苯并噻吩-4-酮作为起始原料合成。新化合物的结构通过紫外-可见光谱、红外光谱、高分辨质谱、核磁共振氢谱和碳谱进行表征。二维核磁共振波谱学研究表明,在室温下,这些化合物更倾向于以酮胺形式存在而非席夫碱形式。合成的化合物通过琼脂双重稀释法在体外对抗两种真菌进行评估。抗真菌筛选结果显示,(E)-8-氯-2,3-二氢-3-[(4-硝基苯氨基)亚甲基]-4H-1-苯并噻吩-4-酮(4j)对白色念珠菌的最小抑制浓度值为32微克/毫升,而对照药物氟康唑为64微克/毫升。