Abstract: A compound of the general formula (I), ##STR1## is described wherein R.sup.1 and R.sup.5 each represent a phenyl group optionally substituted with 1 to 3 lower alkoxy, halo, lower alkyl, monohalo-(lower)-alkyl, dihalo-(lower)-alkyl and/or trihalo-(lower)-alkyl groups, R.sup.2 stands for hydrogen or a lower alkyl group optionally substituted with a hydroxy group or 1 to 3 halogen atoms, R.sup.3 and R.sup.4 each represent a hydrogen atom or a lower alkyl group, and R.sup.6 stands for a carbamoyl, thiocarbamoyl or amidino group having optionally one or two lower alkyl and/or lower alkoxycarbonyl substitutes, or a group of the general formula R.sup.7 -CO-wherein R.sup.7 stands for a lower analkoxy group, an aryloxy group, or an aralkoxy group, and n is equal to 0, provided that when R.sup.1 and R.sup.5 each represent a phenyl group, R.sup.2 and R.sup.3 may not stand for hydrogen or a pharmaceutically acceptable acid addition salt, a pure isomer or an isomeric mixture thereof.

Abstract: The invention relates to new compounds of the general formula (I), ##STR1## wherein R.sup.1 and R.sup.5 each represent a phenyl group, optionally substituted,R.sup.2 stands for hydrogen, formyl group, carboxy group, lower alkoxycarbonyl group, hydroxy-(lower)-alkoxycarbonyl group, or a lower alkyl group, optionally substituted,R.sup.3 and R.sup.4 each represent hydrogen atom or a lower alkyl group, with the proviso that when R.sup.1 and R.sup.5 each represent a phenyl group, R.sup.2 and R.sup.3 may not stand for hydrogen.These compounds possess valuable biological properties, and can be applied primarily as antiphlogistic or diuretic agents.