Synthesis and antimicrobial evaluation of some new thienopyridine, pyrazolopyridine and pyridothienopyrimidine derivatives
作者:Nora M. Rateb、Shaimaa H. Abdelaziz、Hussein F. Zohdi
DOI:10.1080/17415993.2011.593635
日期:2011.8
cyclization in a basic medium. On the other hand, compound 3 reacted with methyl iodide to give compound 10 which was converted to pyrazolo[3,4-b]pyridine derivative 13 by reaction with hydrazine hydrate. Pyrido[3′, 2′:4,5]thieno[3,2-d]pyrimidines derivatives 14, 16 were obtained by reaction of 7 with each of formic acid and formic/formamide, respectively. Furthermore, compound 14 was obtained by the reaction
噻吩并 [2,3-b] 吡啶 7、8、9 是通过 3 与各种烷基化剂的 S-烷基化,然后在碱性介质中环化而获得的。另一方面,化合物3与碘甲烷反应得到化合物10,其通过与水合肼反应转化为吡唑并[3,4-b]吡啶衍生物13。吡啶并[3', 2':4,5]噻吩并[3,2-d]嘧啶衍生物14、16分别通过7与甲酸和甲酸/甲酰胺反应得到。此外,化合物14由8与甲酰胺反应得到。新合成产物的结构由元素分析和光谱数据确定。