Compounds are provided having the formula ##STR1## wherein R.sup.1 is hydrogen, lower alkyl; substituted or unsubstituted phenyl-lower alkyl; substituted or unsubstituted phenyl; substituted or unsubstituted 5- or 6-membered monocyclic aromatic heterocyclic containing one O, S or N atom; in the above substituted groups, the phenyl groups bear one or two substituents and the heterocyclic bears one substituent which may be a halogen, hydroxy, lower alkyl, lower alkoxy, lower alkylthio, cyano or nitro group; R.sup.2 is hydrogen, lower alkyl, or substituted or unsubstituted phenyl; and R.sup.3 is substituted 1H-pyrazolo[3,4-b]pyridine or substituted 2H-pyrazolo[3,4-b]pyridine The above compound as well as their physiologically acceptable acid-addition salts are useful as antimicrobial agents, especially, antifungal agents.
                            提供具有以下式子的化合物:##STR1##其中R.sup.1是氢,低碳基;取代或未取代的苯基-低碳基;取代或未取代的苯基;含有一个O、S或N原子的取代或未取代的5-或6-成员单环芳香杂环;在上述取代基中,苯基带有一或两个取代基,杂环带有一个取代基,该取代基可以是卤素、羟基、低碳基、低烷氧基、低烷
硫基、
氰基或硝基基团;R.sup.2是氢、低碳基或取代或未取代的苯基;R.sup.3是取代的1H-
吡唑并[3,4-b]
吡啶或取代的2H-
吡唑并[3,4-b]
吡啶。上述化合物及其生理上可接受的酸加合物盐作为抗微
生物剂,特别是抗真菌剂,具有用途。