Abstract: [Problems] To provide a compound that is useful as an agent for treating chronic renal insufficiency or an agent for treating diabetic nephropathy. [Means for Solving Problems] The present inventors have conducted extensive studies on a compound having an EP4 receptor antagonistic action, and as a result, they have found that various amide derivatives having a carboxylic group or an equivalent thereof exhibit an excellent EP4 receptor antagonistic action, thereby completing the present invention. Since the compound of the present invention has an excellent EP4 receptor antagonistic action, it is useful as an agent for preventing and/or treating chronic renal insufficiency or diabetic nephropathy.

Abstract: [Object] To provide a therapeutic and/or prophylactic agent for urinary frequency, urinary urgency, and urinary incontinence associated with various lower urinary tract diseases including overactive bladder, various lower urinary tract diseases accompanied by lower urinary tract pain, such as interstitial cystitis, chronic prostatitis, and the like, and various diseases accompanied by pain, based on an excellent trkA receptor inhibitory action.

Abstract: Provided is a compound which is useful as a therapeutic agent for chronic renal insufficiency and a therapeutic agent for diabetic nephropathy. The present inventors have made extensive studies on an ornithine derivative having an antagonistic action against an EP4 receptor, and as a result, they have found that by introducing cycloalkanediyl at a C terminal of the ornithine part of the compound of the present invention, the physicochemical properties such as solubility, and the like can be improved, thereby giving further preferred properties as a pharmaceutical. Therefore, they have completed the present invention. The compound of the present invention exhibits a good antagonistic action against an EP4 receptor, and thus, it is useful as a therapeutic agent for chronic renal insufficiency and diabetic nephropathy.

Abstract: [Problem] To provide a compound which can be used for treating diseases in which a calcium sensing receptor (CaSR) participates, particularly hyperparathyroidism. [Means for Resolution] It was found that a novel piperidine derivative which is characterized in that one of a 3-position and a 4-position is substituted with an aminomethyl group substituted with an arylalkyl group or the like and the other position is substituted with aryl, heteroaryl or the like, or a salt thereof, has an excellent CaSR agonistic regulatory action, and also has excellent selectivity with a CYP2D6 inhibitory action having a possibility of causing drug interaction. Based on the above, this novel piperidine derivative is useful as a therapeutic agent for diseases in which CaSR participates (hyperparathyroidism, renal osteodystrophy, hypercalcemia, and the like).

Abstract: Provided is an agent for treating or preventing urinary frequency, urinary urgency and urinary, incontinence which are associated with overactive bladder, a lower urinary tract disease such as interstitial cystitis and chronic prostatitis accompanied by lower urinary tract pain, and various diseases accompanied by pain. A novel azolecarboxamide derivative in which an azole ring such as thioazole or oxazole is bonded to a benzene ring, pyridine ring or pyrimidine ring through carboxamide was confirmed to have a potent trkA receptor-inhibitory activity and found to be an agent for treating or preventing lower urinary tract disease and various diseases accompanied by pain, which is excellent in efficacy and safety, and thus the present invention was accomplished.

Abstract: [Problem] To provide a compound which may be used in treating diseases in which a calcium sensing receptor (CaSR) is concerned, particularly hyperparathyroidism. [Means for Resolution] It was found that novel pyrrolidine derivatives which are characterized by the possession of aminomethyl group substituted with arylalkyl group or the like, or salts thereof, have excellent CaSR agonistic regulatory activity and also have excellent selectivity with CYP2D6 inhibitory activity having a possibility of causing drug interaction. Based on the above, these novel pyrrolidine derivatives are useful as therapeutic agents for treating diseases in which CaSR is concerned (hyperparathyroidism, renal osteodystrophy, hypercalcemia and the like).

Abstract: [Problem] To provide a compound which may be used in treating diseases in which a calcium sensing receptor (CaSR) is concerned, particularly hyperparathyroidism. [Means for Resolution] It was found that novel pyrrolidine derivatives which are characterized by the possession of aminomethyl group substituted with arylalkyl group or the like, or salts thereof, have excellent CaSR agonistic regulatory activity and also have excellent selectivity with CYP2D6 inhibitory activity having a possibility of causing drug interaction. Based on the above, these novel pyrrolidine derivatives are useful as therapeutic agents for treating diseases in which CaSR is concerned (hyperparathyroidism, renal osteodystrophy, hypercalcemia and the like).

Abstract: [Problem] To provide a compound which can be used for the prevention and/or treatment of diseases in which 5-HT2B receptor and 5-HT7 receptor are concerned, particularly for the treatment of irritable bowel syndrome (IBS). [Means for Resolution] It was found that an amide derivative characterized by the possession of a nitrogen-containing bicyclic hetero ring (e.g., an indole or the like), or a pharmaceutically acceptable salt thereof, has a strong antagonism for both of the 5-HT2B receptor and 5-HT7 receptor. In addition, the compound of the present invention having the antagonistic activity for both of the receptors showed a good pharmacological action in comparison with the case in which an antagonist selective for either one of the receptors was used alone. Based on the above, the compound of the present invention is useful for the prevention and/or treatment of diseases in which 5-HT2B receptor and 5-HT7 receptor are concerned, particularly for the treatment of irritable bowel syndrome (IBS).

Abstract: [Problem] To provide a compound which may be used for the prevention and/or treatment of diseases in which 5-HT2B receptor and 5-HT7 receptor are concerned, particularly for the treatment of irritable bowel syndrome (IBS). [Means for Resolution] It was found that a pyrrole derivative characterized by the possession of a guanidinocarbonyl group or amido group as a substituent group at the 3-position, or a pharmaceutically acceptable salt thereof, has a strong antagonism for both of the 5-HT2B receptor and 5-HT7 receptor. In addition, the compound of the present invention having the antagonistic activity for both of the receptors showed a good pharmacological action in comparison with the case in which an antagonist selective for either one of the receptors was used alone. Based on the above, the compound of the present invention is useful for the prevention and/or treatment of diseases in which 5-HT2B receptor and 5-HT7 receptor are concerned, particularly for the treatment of irritable bowel syndrome (IBS).

Abstract: The present invention relates to a compound which is represented by the following general formula and has type 4 phosphodiesterase inhibitory action, and uses and an intermediate compound thereof. (wherein R1, R2: hydrogen, a halogen, a lower alkyl, a lower alkoxy, or the like, R3, R4: hydrogen, a (substituted) lower alkyl, a halogen, or the like, R5: hydrogen, a lower alkyl, a lower alkoxycarbonyl, or the like, and n: 0 or 1).

Abstract: The present invention relates to a compound which is represented by the following general formula and has type 4 phosphodiesterase inhibitory action, and uses and an intermediate compound thereof.