| 摘要 |
An antidepressant containing an active ingredient comprising a xanthine derivative represented by general formule (I) or a pharmacologically acceptable salt thereof, wherein R<1>, R<2> and R<3> may be the same or different from one another and each represents hydrogen, lower alkyl, alkyl or propargyl; R<4> represents cycloalkyl, -(CH2)n-R<5> (wherein R<5> represents optionally substituted aryl or optionally substituted heterocyclic group, and n represents an integer of 0 to 4) of group (A) wherein Y<1> and Y<2> may be the same or different from each other and each represents hydrogen, fluorine or methyl, and Z represents optionally substituted aryl, group (B) (wherein R<6> represents hydrogen, hydroxy, lower alkyl, lower alkoxy, halogen, nitro or amino, and m represents an integer of 1 to 3), or optionally substituted heterocyclic group; and X<1> and X<2> may be the same or different from each other and each represents O or S. <CHEM> |
