Compounds of the formula ##STR1## wherein R.sup.1 is aryl which may have one or more suitable substituent(s) R.sup.2 is aryl which may have one or more suitable substituent(s), lower alkyl or cyclo(lower)alkyl, R.sup.3 is hydrogen, hydroxy, halogen, lower alkenyl, amino or protected amino, R.sup.4 is a group of the formula: ##STR2## wherein R.sup.5 is lower alkyl which may have one or more suitable substituent(s), cyclo(lower)alkyl, aryl, ar(lower)alkyl which may have one or more suitable substituent(s), and R.sup.6 is hydrogen or lower alkyl; or N-containing heterocyclic group which may have one or more suitable substituent(s), and A is lower alkylene or lower alkynylene, in which R.sup.1 and R.sup.2 may be linked through an oxygen atom, their preparation and use in treatment of dysuria, and starting materials for their preparation.
本发明涉及一种化合物,其分子式为##STR1##其中,R.sup.1是芳基,可能具有一个或多个适当的取代基;R.sup.2是芳基,可能具有一个或多个适当的取代基,较低烷基或环状(较低)烷基;R.sup.3是氢、羟基、卤素、较低烯基、
氨基或保护
氨基;R.sup.4是以下式的基团:##STR2##其中,R.sup.5是较低烷基,可能具有一个或多个适当的取代基,环状(较低)烷基、芳基、ar(较低)烷基,可能具有一个或多个适当的取代基,R.sup.6是氢或较低烷基;或含氮杂环基团,可能具有一个或多个适当的取代基;A是较低的烷基或较低的炔基,在其中R.sup.1和R.sup.2可以通过氧原子连接。本发明还涉及其制备方法、用于治疗尿路疾病的用途以及其制备的起始材料。