Abstract: 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.

Abstract: A pathologic animal model characterized in that a pain or discomfort behavior and urinary frequency are induced by administering a stimulative substance into the testes of a small-sized mammal, and a screening method for a therapeutic agent for pelvic pain syndrome, particularly non-bacterial chronic prostatitis, which comprises administering a test substance to the pathologic animal model and measuring pain or discomfort behaviors and/or urinary frequency.

Abstract: A pharmaceutical composition comprising (R)-2-(2-aminothiazol-4-yl)-4?-{2-[(2-hydroxy-2-phenylethyl)amino]ethyl}acetanilide or a pharmaceutically acceptable salt thereof and (3R)-quinuclidin-3-yl (1S)-1-phenyl-1,2,3,4-tetrahydroisoquinoline-2-carboxylate or a pharmaceutically acceptable salt thereof, as active ingredients, in particular a pharmaceutical composition for improving various symptoms accompanying overactive bladder, such as urinary urgency, pollakiuria and/or urinary incontinence.

Abstract: [Problem] A novel and excellent compound which is useful as an agent for preventing and/or treating rejection reactions in various organ transplantations, allergy diseases, autoimmune diseases, and hematologic tumor, and based on a PI3K? selective inhibitory action and/or an IL-2 production inhibitory action and/or a B cell proliferation inhibitory action (including an activation inhibitory action). [Means for Solution] The present inventors have investigated a compound having a PI3K? selective inhibitory action and/or an IL-2 production inhibitory action and/or a B cell proliferation inhibitory action (including an activation inhibitory action), and have found that the heterocyclic compound of the present invention has a PI3K? selective inhibitory action and/or and IL-2 production inhibitory action and/or a B cell proliferation inhibitory action (including an activation inhibitory action), thereby completing the present invention.

Abstract: [Problem] The present invention provides a compound which is useful as an active ingredient of a pharmaceutical composition, in particular, a pharmaceutical composition for preventing and/or treating VAP-1-related diseases. [Means for Solution] The present inventors have conducted intensive studies on a compound having a VAP-1 inhibitory activity, and as a result, they have found that the compound or a salt thereof of the present invention exhibits an excellent VAP-1 inhibitory activity and is useful for preventing and/or treating VAP-1-related diseases, in particular, diabetic nephropathy or diabetic macular edema, thereby completing the present invention. In addition, the present invention relates to a pharmaceutical composition, in particular, a pharmaceutical composition for preventing and/or treating VAP-1-related diseases, which comprises the compound or a salt thereof of the present invention, and an excipient.

Abstract: [Problem] To provide a compound useful as a novel agent which is excellent in preventing and/or treating cannabinoid receptor type 2-related diseases, based on agonist action on a cannabinoid receptor type 2 [Means for Solution] The present inventors conducted thorough investigation regarding compounds having agonist action on a cannabinoid receptor type 2. They confirmed that the fused ring pyridine compound of the present invention has excellent agonist action on the cannabinoid receptor type 2, thereby completing the present invention. The fused ring pyridine compound of the present invention has agonist action on the cannabinoid receptor type 2, and can be used as an agent for preventing and/or treating cannabinoid receptor type 2-related diseases, for example, inflammatory diseases and pain.

Abstract: Quinoxaline compounds of formula (I) have a PDE9-inhibiting action and are useful as an active ingredient for an agent for treating and/or preventing storage dysfunction, voiding dysfunction, and bladder/urethral diseases, and the like.

Abstract: A 2-acylaminothiazole derivative or a pharmaceutically acceptable salt thereof having an excellent effect of proliferating human c-mpl-Ba/F3 cells and an activity of increasing platelets based on the effect of promoting the formation of megakaryocytic colonies. A compound or a pharmaceutically acceptable salt thereof useful in treating thrombocytopenia.

Abstract: [Problem] To provide a compound useful as medicine having PDE4B inhibitory activity, in particular, as an active ingredient of a composition for treating or preventing schizophrenia, Alzheimer's disease, dementia, depression and the like. [Measures for Solution] The present inventors examined compounds having PDE4B inhibitory activity and found that a tricyclic or tetracyclic imidazo[1,2-a]pyridine derivative or salts thereof had a superior PDE4B inhibitory activity, thereby completing the present invention. The imidazo[1,2-a]pyridine derivative can be used as an agent for treating or preventing schizophrenia, Alzheimer's disease, dementia, depression and the like.

Abstract: The purpose is to provide a compound which has an intestinal phosphate transporter (NPT-IIb) inhibitory action and is useful as an active ingredient of an agent for treating and/or preventing hyperphosphatemia. A tetrahydrobenzothiophene compound of the following formula (I) has NPT-IIb inhibitory action and can be used as an agent for treating and/or preventing hyperphosphatemia: wherein, R1 represents —O-lower alkyl, -lower alkylene-phenyl, or the like; R2 and R3 are the same as or different from each other and represent H, lower alkyl, cycloalkyl, aryl, heteroaryl or the like, or, R2 and R3 may be combined with a nitrogen atom to which they bind to form 5- to 7-membered saturated cyclic amino; R4's are the same as or different from each other and represent halogen, lower alkyl; and n represents 0 to 2.