The present inventors have investigated a compound which has a PDE9-inhibiting action and is useful as an active ingredient for an agent for treating and/or preventing storage dysfunction, voiding dysfunction, bladder/urethral diseases, and the like, and thus, have found that a pyrazoloquinoline compound has a PDE9-inhibiting action, thereby completing the present invention.
The present inventors have investigated a compound which has a PDE9-inhibiting action and is useful as an active ingredient for an agent for treating and/or preventing storage dysfunction, voiding dysfunction, bladder/urethral diseases, and the like, and thus, have found that a pyrazoloquinoline compound has a PDE9-inhibiting action, thereby completing the present invention.