Synthesis of new heterocycles festooned with thiophene and evaluating their antioxidant activity
作者:Nader A. Abed、Mohamed M. Hammouda、Mohamed A. Ismail、Ehab Abdel‐Latif
DOI:10.1002/jhet.4122
日期:2020.12
trile was achieved to obtain the target dithien‐2‐yl ketone 28. The new synthesized scaffolds were examined for their antioxidant activity by means of ABTS antioxidant assay. The thienyl‐thiazole scaffold 18c and 2‐((2‐[thiophen‐2‐yl]‐2‐oxoethyl)thio)nicotinonitrile derivative 27 displayed a reasonable radical scavenging activity.
测试了5-溴-2-(溴乙酰基)噻吩(1)在与多种双亲核试剂(即; 2-氨基苯并噻唑,2-氨基噻唑,2-氨基四唑,2-氨基三唑,2-氨基)的反应中的化学性能。氨基吡啶,2-氨基苯并咪唑和邻苯二胺)。因此,一系列的桥连氮杂环轴承噻吩部分的3,5,7,9,11,13和15,分别合成。与硫代氨基甲酰基的化合物,此外,反应5-溴-2-(溴乙酰基) -噻吩17,19和/或24根据反应条件,可得到相应的噻吩并噻唑18或二噻吩-2-基酮20和25。用2-巯基-4,6-二甲基烟腈处理1得到目标二噻吩-2-基酮28。通过ABTS抗氧化剂测定法检查新合成的支架的抗氧化剂活性。噻吩噻唑支架18c和2-((2- [噻吩-2-基] -2-氧代乙基)硫代)烟腈衍生物27具有合理的自由基清除活性。