A Convenient Synthesis of Some New Indeno[1,2-<i>b</i>]Pyridines and Indeno[1,2-<i>b</i>] Thieno[3,2-<i>e</i>]Pyridine Derivatives with Potential Biological Activity
作者:Yasser A. El-Ossaily
DOI:10.1080/10426500601142080
日期:2007.3.15
cyanoacetamide. S-Alkylation of 3 with halogenated compounds afforded compounds 4a–h . Compounds 4d–h underwent ring closure with sodium ethoxide to produce indenothienopyridines 5 a–e , respectively. Treatment of 3 using ethylchoroacetate or chloroacetone gave compounds 6 and 7 , respectively. Compounds 5a and 5d were reacted with carbon disulphide in pyridine to give compounds 8a and 8b . Most of
3-Cyano-5-oxo-4(2-thienyl)-indeno[1,2-b]pyridin-2-[1H]thone 3 由茚满酮 1 与亚芳基氰基乙酰胺或亚芳基茚满酮 2 与氰基乙酰胺制备。3与卤代化合物的S-烷基化得到化合物4a-h。化合物 4d-h 用乙醇钠进行闭环,分别产生茚并噻吩并吡啶 5a-e。使用氯乙酸乙酯或氯丙酮处理3分别得到化合物6和7。化合物5a和5d在吡啶中与二硫化碳反应得到化合物8a和8b。使用氯霉素 (5%) 和特比萘芬 (5%) 作为标准,在体外筛选了大多数合成的化合物对四种细菌和六种真菌的抗菌活性。