Abstract: To provide an excellent agent for preventing or treating dementia and schizophrenia based on serotonin 5-HT5A receptor regulating action, it was found that a tetrahydroisoquinoline derivative characterized by a structure in which an acylguanidino group binds to a N atom of a tetrahydroisoquinoline ring or the like, and a cyclic group binds to an unsaturated ring has a potent 5-HT5A receptor regulating action and an excellent pharmacological action based on the regulating action and also discovered that the tetrahydroisoquinoline derivative is useful as an agent for treating or preventing dementia, schizophrenia, and the like, whereby the present invention has been completed.

Abstract: [Object] An excellent agent for preventing or treating dementia, schizophrenia, and the like, based on serotonin 5-HT5A receptor modulating action, is provided. [Means for Solution] It was confirmed that acylguanidine derivatives (the following formula I; any one of Z1, Z2, Z3, Z4 and Z5 is nitrogen atom, and the others are carbon atoms) which have the characteristic structure in which the guanidine is bonded to one ring of the quinoline or isoquinoline via a carbonyl group, and a cyclic group is bonded to the other ring, exhibit potent 5-HT5A receptor modulating actions and excellent pharmacological actions based on the 5-HT5A receptor modulating action, and thus can be excellent agents for preventing or treating dementia, schizophrenia, bipolar disorder, or attention deficit hyperactivity disorder. Thus, the present invention has been completed.

Abstract: To provide an excellent agent for preventing or treating dementia and schizophrenia based on serotonin 5-HT5A receptor regulating action, it was found that a tetrahydroisoquinoline derivative characterized by a structure in which an acylguanidino group binds to a N atom of a tetrahydroisoquinoline ring or the like, and a cyclic group binds to an unsaturated ring has a potent 5-HT5A receptor regulating action and an excellent pharmacological action based on the regulating action and also discovered that the tetrahydroisoquinoline derivative is useful as an agent for treating or preventing dementia, schizophrenia, and the like, whereby the present invention has been completed.

Abstract: [Object] An excellent agent for preventing or treating dementia, schizophrenia, and the like, based on serotonin 5-HT5A receptor modulating action, is provided. [Means for Solution] It was confirmed that acylguanidine derivatives (the following formula I; any one of Z1, Z2, Z3, Z4 and Z5 is nitrogen atom, and the others are carbon atoms) which have the characteristic structure in which the guanidine is bonded to one ring of the quinoline or isoquinoline via a carbonyl group, and a cyclic group is bonded to the other ring, exhibit potent 5-HT5A receptor modulating actions and excellent pharmacological actions based on the 5-HT5A receptor modulating action, and thus can be excellent agents for preventing or treating dementia, schizophrenia, bipolar disorder, or attention deficit hyperactivity disorder. Thus, the present invention has been completed.

Abstract: An object of the present invention is to provide an excellent agent for treating or preventing dementia, schizophrenia based on serotonin 5-HT5A receptor modulating action. It was discovered that acylguanidine derivatives, in which the guanidine is bonded to one ring of a naphthalene via a carbonyl group and a cyclic group is bonded to the other ring thereof, exhibit potent the 5-HT5A receptor modulating action and excellent pharmacological actions based on the action. The present invention is useful as an excellent agent for treating or preventing dementia, schizophrenia, bipolar disorder or attention deficit hyperactivity disorder.

Abstract: An object of the present invention is to provide an excellent agent for treating or preventing dementia, schizophrenia based on a serotonin 5-HT5A receptor modulating action. It was confirmed that acylguanidine derivatives, which has the characteristic structure in which the guanidine is bonded to one ring of a naphthalene via a carbonyl group and a cyclic group is bonded to the other ring thereof, exhibit potent 5-HT5A receptor modulating action and excellent pharmacological action based on the action. The present invention is useful as an excellent agent for treating or preventing dementia, schizophrenia, bipolar disorder or attention deficit hyperactivity disorder.

Abstract: Compounds useful as GnRH receptor antagonists are provided. The present inventors have further examined propane-1,3-dione derivatives and confirmed as a result that a propane-1,3-dione having 2-(1,3-dihydro-2H-benzimidazol-2-ylidene), or a compound which has benzene or thiophene ring substituted with a group derived from 1-hydroxymethyl, shows excellent availability, in addition to its excellent GnRH receptor antagonism, thereby accomplishing the invention. Since the compound of the invention shows excellent availability, in addition to its strong GnRH receptor antagonism, it can be expected that it exerts superior drug effect in the living body, and it is useful for the treatment of sex hormone dependent diseases such as prostate cancer, breast cancer, endometriosis, uterine leiomyoma, benign prostatic hypertrophy and the like.

Abstract: An object of the present invention is to provide a novel and excellent agent for treating or preventing dementia, schizophrenia, and the like, based on the serotonin 5-HT5A receptor modulating action. It was confirmed that a bicyclic acylguanidine derivative which has a characteristic structure that guanidine is bonded to one ring of a bicyclic structure such as chromene and dihydronaphthalene through a carbonyl group and a cyclic group is bonded on the other ring, has a potent 5-HT5A receptor modulating action and an excellent pharmacological action based on this mechanism. The present invention is useful as an excellent agent for treating or preventing dementia, schizophrenia, bipolar disorder, or attention deficit hyperactivity disorder.

Abstract: It is intended to provide a compound useful as a GnRH receptor antagonist. The inventors further investigated propane-1,3-dione derivatives. As a result, they confirmed that a compound having a benzene ring or a thiophene ring substituted with a group represented by —SO2—R3 in a propane-1,3-dione derivative having 2-(1,3-dihydro-2H-benzimidazol-2-ylidene) has an excellent GnRH receptor antagonistic effect and accomplished the present invention. Because the compound of the present invention has a potent GnRH receptor antagonistic effect, it is useful for the treatment of sex hormone-dependent diseases, particularly GnRH-related diseases. Further, because the compound of the present invention has an excellent metabolic stability in human and few drug interactions, therefore it has preferable characteristics as a pharmaceutical used for the above-mentioned diseases.

Abstract: An object of the present invention is to provide a novel and excellent agent for treating or preventing dementia, schizophrenia and the like, based on the 5-HT5A receptor modulating action. It was confirmed that a compound characterized by a structure that a tricyclic hetero ring having a pyrrole ring at the center and guanidine are bonded via a carbonyl group has a potent 5-HT5A receptor modulating action and an excellent pharmacological action based thereon, and thus, it was found that the compound can be an excellent agent for treating or preventing dementia, schizophrenia, bipolar disorder, or attention deficit hyperactivity disorder, particularly for memory-related functional disorders such as cognitive impairments including dementia and schizophrenia, thereby completing the present invention.

Abstract: Compounds useful as GnRH receptor antagonists are provided. The present inventors have further examined propane-1,3-dione derivatives and confirmed as a result that a propane-1,3-dione having 2-(1,3-dihydro-2H-benzimidazol-2-ylidene), or a compound which has benzene or thiophene ring substituted with a group derived from 1-hydroxymethyl, shows excellent availability, in addition to its excellent GnRH receptor antagonism, thereby accomplishing the invention. Since the compound of the invention shows excellent availability, in addition to its strong GnRH receptor antagonism, it can be expected that it exerts superior drug effect in the living body, and it is useful for the treatment of sex hormone dependent diseases such as prostate cancer, breast cancer, endometriosis, uterine leiomyoma, benign prostatic hypertrophy and the like.

Abstract: Compounds useful as GnRH receptor antagonists are provided. The present inventors have further examined propane-1,3-dione derivatives and confirmed as a result that a propane-1,3-dione having 2-(1,3-dihydro-2H-benzimidazol-2-ylidene), or a compound which has benzene or thiophene ring substituted with a group derived from 1-hydroxymethyl, shows excellent availability, in addition to its excellent GnRH receptor antagonism, thereby accomplishing the invention. Since the compound of the invention shows excellent availability, in addition to its strong GnRH receptor antagonism, it can be expected that it exerts superior drug effect in the living body, and it is useful for the treatment of sex hormone dependent diseases such as prostate cancer, breast cancer, endometriosis, uterine leiomyoma, benign prostatic hypertrophy and the like.

Abstract: The present invention relates to a novel N-phenyl-(2R,5S)dimethylpiperazine derivatives useful as antiandrogenic agent which exhibits a sufficient prostate gland reducing effect as compared with conventional compounds and are excellent in oral activity. The compound of the present application is useful in preventing or treating prostate cancer, benign prostatic hyperplasia, and the like. The present invention also provides a novel intermediate useful in producing the compound of the present invention.

Abstract: It is intended to provide a compound useful as a GnRH receptor antagonist. The inventors further investigated propane-1,3-dione derivatives. As a result, they confirmed that a compound having a benzene ring or a thiophene ring substituted with a group represented by —SO2—R3 in a propane-1,3-dione derivative having 2-(1,3-dihydro-2H-benzimidazol-2-ylidene) has an excellent GnRH receptor antagonistic effect and accomplished the present invention. Because the compound of the present invention has a potent GnRH receptor antagonistic effect, it is useful for the treatment of sex hormone-dependent diseases, particularly GnRH-related diseases. Further, because the compound of the present invention has an excellent metabolic stability in human and few drug interactions, therefore it has preferable characteristics as a pharmaceutical used for the above-mentioned diseases.

Abstract: Compounds useful as GnRH receptor antagonists are provided. The present inventors have further examined propane-1,3-dione derivatives and confirmed as a result that a propane-1,3-dione having 2-(1,3-dihydro-2H-benzimidazol-2-ylidene), or a compound which has benzene or thiophene ring substituted with a group derived from 1-hydroxymethyl, shows excellent availability, in addition to its excellent GnRH receptor antagonism, thereby accomplishing the invention. Since the compound of the invention shows excellent availability, in addition to its strong GnRH receptor antagonism, it can be expected that it exerts superior drug effect in the living body, and it is useful for the treatment of sex hormone dependent diseases such as prostate cancer, breast cancer, endometriosis, uterine leiomyoma, benign prostatic hypertrophy and the like.

Abstract: The present invention relates to a novel N-phenyl-(2R,5S)dimethylpiperazine derivatives useful as antiandrogenic agent which exhibits a sufficient prostate gland reducing effect as compared with conventional compounds and are excellent in oral activity. The compound of the present application is useful in preventing or treating prostate cancer, benign prostatic hyperplasia, and the like. The present invention also provides a novel intermediate useful in producing the compound of the present invention.

Abstract: The present invention relates to a novel N-phenyl-(2R,5S)dimethylpiperazine derivatives useful as antiandrogenic agent which exhibits a sufficient prostate gland reducing effect as compared with conventional compounds and are excellent in oral activity. The compound of the present application is useful in preventing or treating prostate cancer, benign prostatic hyperplasia, and the like. The present invention also provides a novel intermediate useful in producing the compound of the present invention.

Abstract: The 1-(2-methoxyethyl)-2-methyl-4,9-dioxo-3-(pyrazin-2-ylmethyl)-4,9-dihydro-1H-naphtho[2,3-d]imidazol-3-ium bromide of the invention and its crystals, particularly ?- and ?- form Crystals, have no hygroscopic property, have excellent stability and therefore are useful as production materials of medicines. Particularly, the ?- form Crystal is most stable and markedly useful as a bulk for medicines.

Abstract: The present invention relates to a novel N-phenyl-(2R,5S)dimethylpiperazine derivatives useful as antiandrogenic agent which exhibits a sufficient prostate gland reducing effect as compared with conventional compounds and are excellent in oral activity. The compound of the present application is useful in preventing or treating prostate cancer, benign prostatic hyperplasia, and the like. The present invention also provides a novel intermediate useful in producing the compound of the present invention.

Abstract: There is provided medicaments, particularly a vascular endothelial growth factor (VEGF) inhibitor which is useful as a therapeutic drug for solid tumors, diabetic retinopathy and the like diseases in which angiogenesis is taking a role. That is, since a novel 3-quinolin-2(1H)-ylideneindolin-2-one derivative or a salt thereof has good VEGF inhibitory action, angiogenesis inhibitory action and anti-tumor action, it is useful as ideal VEGF inhibitor, angiogenesis inhibitor and anti-tumor agent.