The N-alkylation of 5-[5-(substituted phenyl)-2-furyl]-1H-tetrazoles with ethyl bromoacetate or ethyl 3-bromopropionate afforded a mixture of 5-substituted ethyl 1- and 2-tetrazoyl acetates or propionates, which were separated and hydrolyzed to the corresponding 1- and 2-acetic or propionic acids, and used as intermediates for the synthesis of semisynthetic cephalosporine antibiotics. The prepared tetrazolyl acetic acids exhibited antiinflammatory activity.
5-[5-(取代苯基)-2-
呋喃基]-
1H-四唑与
溴乙酸乙酯或
溴丙酸乙酯进行N-烷基化反应,生成了5-取代乙酰基或丙酰基-1-和2-
四唑乙酸酯或
丙酸酯的混合物,分离后
水解成相应的1-和2-
乙酸或
丙酸,作为半合成
头孢菌素类抗生素的合成中间体。制备的
四唑乙酸表现出抗炎活性。