Synthesis and antiinflammatory activity of certain benzothieno[3,2-d][1,2,4]triazolo[4,3-b] pyridazine derivatives
作者:Ashraf F. A. Zaher、Omneya M. Khalil、Hanan M. Refaat
DOI:10.1007/s00044-011-9847-2
日期:2012.10
nes 2–6. Nucleophilic substitution of the 6-chloro with piperidine, N-methyl piperazine, hydrazine hydrate, or potassium hydroxide afforded 6-substituted benzothieno[3,2-d][1,2,4]triazolo[4,3-b] pyridazines 7–16. The structures of the synthesized compounds were elucidated by elemental analysis and spectral data. All the newly synthesized compounds were subjected to evaluation for their antiinflammatory
摘要选择6-Bromo-4-chloro-1-hydrazinobenzothieno [2,3- d ]哒嗪(1)作为合成某些新型稠合苯并噻吩并三氮杂并吡嗪衍生物2-16的原料。因此,化合物1与二硫化碳,原甲酸乙酯,乙酸酐或2-甲氧基苯甲醛反应,然后与溴环合,得到相应的苯并噻吩并三氮杂并恶嗪2-6。用哌啶,N-甲基哌嗪,水合肼或氢氧化钾对6-氯进行亲核取代,得到6-取代的苯并噻吩并[3,2- d ] [1,2,4]三唑并[4,3- b ]哒嗪7 –16。通过元素分析和光谱数据阐明了合成化合物的结构。以吲哚美辛为参照标准,对所有新合成的化合物以10 mg / kg的剂量对角叉菜胶诱导的爪水肿的抗炎活性进行评估。与消炎痛(50.5%)相比,化合物11和13(6-肼基衍生物)将水肿分别减少至52.8和78.7%。 图形概要选择6-Bromo-4-chloro-1-hydrazinobenzothieno