期刊
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
卷 193, 期 12, 页码 840-847出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10426507.2018.1514502
关键词
2-Aminobenzenethiol; chromene; carrageenan-induced paw edema; anti inflammatory
A series of chromene derivatives (5a-f) were prepared by multistep synthesis process using 2-[3-phenyl prop-2-ene nitrile] 1,3-benzothiazole and dimedone using piperidine as catalyst in ethanol. The reaction was found to proceed via Knoevenagel condensation of aldehydes with benzothiazole, followed by the elimination to afford the 2-(benzo[d]thiazol-2-yl)-3-(aryl)acrylonitrile, which then undergoes Michael addition with 5,5-dimethyl-1,3-cyclohexanedione, followed by intramolecular O-cyclization to give the products. The structures of all novel constructed derivatives were corroborated by elemental analysis and spectral data (FT-IR, H-1-NMR, C-13-NMR and Mass). Subsequently, the compounds were tested for their in-vivo anti-inflammatory activity. This study revealed that these synthesized derivatives tend to have significantly anti inflammatory activity and shall prove as structural templates in the design and development of new anti inflammatory drugs. [GRAPHICS] .
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