Heterocyclic compounds of the formula: R.sup.1 --Q--Z--X--A--M wherein R.sup.1 is lower alkyl, a heterocyclic group which may have suitable substituent(s), etc; Q is oxadiazolediyl, Z is bond or vinyl, X is bond, a group of the formula: ##STR1## (in which R.sup.4 is hydrogen or lower alkyl), a group of the formula: ##STR2## (in which R.sup.8 is hydroxy or protected hydroxy), etc; A is bond, lower alkylene or lower alkynylene and M is a heterocyclic group containing at least one nitrogen atom which may have one substituent selected from the group consisting of lower alkyl, an imino protective group and ar(lower)alkyl which may have suitable substituent(s), and a pharmaceutically acceptable salt thereof which are useful as a medicament.
式子为R.sup.1 --Q--Z--X--A--M的
杂环化合物,其中R.sup.1是低碳基,是一种可能具有适当取代基的杂环基团等;Q是氧杂二唑基,Z是键或
乙烯基,X是键,是一种公式为:##STR1##(其中R.sup.4是氢或低碳基),一种公式为:##STR2##(其中R.sup.8是羟基或保护羟基)等;A是键,低碳基亚烷基或低碳基炔亚烷基,M是含有至少一个氮原子的杂环基团,可能具有来自以下取代基组的一种取代基,包括低碳基,亚
氨基保护基和ar(低碳基)烷基,可能具有适当的取代基,以及其药学上可接受的盐,用作药物。