Patent ID: 6133264
Filing Date: 2000-10-17
Classification: A61P,C07D

Abstract:
A carbostyril derivative or a salt thereof represented by the general formula (1), ##STR41## (wherein R.sup.1 is a hydrogen atom, a lower alkyl group or a lower alkenyl group; R.sup.2 is a hydrogen atom, a lower alkyl group, a lower alkoxy group, a lower alkenyloxy group, a lower alkenyl group or a tetrahydropyranyloxy group; R.sup.3 and R.sup.4 are the same or different from each other and are lower alkyl groups which may have hydroxyl groups as substituents; further R.sup.3 and R.sup.4 may form, together with the adjacent nitrogen atom, further with or without an additional nitrogen atom, sulfur atom or oxygen atom, a 5- or 6-membered saturated heterocyclic group which may have substituents selected from the group consisting of a lower alkyl group and a lower alkanoyl group; the carbon--carbon bond between 3- and 4-positions in the carbostyril skeleton is a single bond or double bond; provided that when R.sup.3 and R.sup.4 are lower alkyl groups at the same time, then R.sup.2 should be neither a hydrogen atom, a lower alkyl group nor a lower alkoxy group).