Synthesis of some new 5-(2-substituted-1,3-thiazol-5-yl)-2-hydroxy benzamides and their 2-alkoxy derivatives as possible antifungal agents
作者:B. Narayana、K.K. Vijaya Raj、B.V. Ashalatha、N.Suchetha Kumari、B.K. Sarojini
DOI:10.1016/j.ejmech.2004.06.003
日期:2004.10
The 2-hydroxy-5-(1,3-thiazol-5-yl) benzamide (4a), 5-(2-amino-1, 3-thiazol-5-yl)-2-hydroxy benzamide (4b), 2-hydroxy-5-(2-alkyl-1,3-Thiazol-5-yl) benzamide (4c and 4d), 5-(2-[(N-substituted aryl)amino]-1,3-thiazol-5-yl)2-hydroxy benzamides (6a-j) were prepared by reacting 5-(bromoacetyl) salicylamide (2) with thiourea, thioformamide, thioalkylamide (3c-d) and substituted thioureas (5a-j) in absolute
2-羟基-5-(1,3-噻唑-5-基)苯甲酰胺(4a),5-(2-氨基-1,3-噻唑-5-基)-2-羟基苯甲酰胺(4b),2 -羟基-5-(2-烷基-1,3-噻唑-5-基)苯甲酰胺(4c和4d),5-(2-[(N-取代的芳基)氨基] -1,3-噻唑-5-通过使5-(溴乙酰基)水杨酰胺(2)与硫脲,硫代甲酰胺,硫代烷基酰胺(3c-d)和取代的硫脲(5a-j)在无水乙醇中反应来制备基)2-羟基苯甲酰胺(6a-j)。这些化合物被转化为5-(2-取代的-1,3-噻唑-5-基)-2-烷氧基苯甲酰胺和5-(2-N-(取代的芳基)-1,3-噻唑-5-基)-通过在碱的存在下与正烷基溴化物(7a-b)反应,生成2-烷氧基苯甲酰胺(8a-g)。通过IR,(1)H-NMR和质谱数据表征了新合成的化合物。还对化合物的抗真菌活性进行了筛选。