1,2,4-Oxadiazoles having as 3- and 5-substituents a hydrogen atom, an aliphatic, cycloaliphatic, araliphatic, aryl or heterocyclic group, or a carbamoyl group of the formula -- CONR.sup.1 R.sup.2 where R.sup.1 & R.sup.2 which can be the same or different, are hydrogen atoms or aliphatic, cycloaliphatic, araliphatic or aryl groups or, taken with the N atom, a heterocvolic ring; provided that at least one of the 3- or 5-substituents is an N-substituted carbamoyl group. Antimicrobial activity, and particularly antiviral, antiparasitic and antibacterial activity is shown in this group. The corresponding oxadiazolins are also described and are useful intermediates in the preparation of the oxadiazoles.
1,
2,4-
氧代唑具有3-和5-位取代基,可以是
氢原子,
脂肪族,环脂族,芳基脂族,芳基或杂环基团,或者是具有-- CONR.sup.1 R.sup.2 公式的
氨基甲酰基团,其中 R.sup.1 和 R.sup.2 可以相同也可以不同,可以是
氢原子或
脂肪族,环脂族,芳基脂族或芳基基团,或者与N原子结合形成杂环结构;前提是3-或5-位的至少一个取代基是N-取代的
氨基甲酰基团。这一类化合物表现出抗微
生物活性,尤其是抗病毒、抗寄生虫和抗菌活性。相应的
氧代唑环也有描述,并且在
氧代唑的制备中是有用的
中间体。