Abstract: [Problem] A compound useful as an active ingredient of a pharmaceutical composition for treating pancreatic cancer is provided. [Solution] The present inventors have studied about a compound that is useful as an active ingredient of a pharmaceutical composition for treating pancreatic cancer and have found that a 4-aminoquinazoline compound has an excellent G12D mutant KRAS inhibition activity and can be used as a therapeutic agent for pancreatic cancer, thus completing the present invention. The 4-aminoquinazoline compound of the present invention or a salt thereof can be used as a therapeutic agent for pancreatic cancer.

Abstract: Phenyldifluoromethyl-substituted prolinamide compounds that have a cathepsin S inhibitory effect, and are usable as active ingredients of pharmaceutical compositions for preventing and/or treating autoimmune diseases including systemic lupus erythematosus (SLE) and lupus nephritis, allergies, or graft rejection of an organ, bone marrow or tissue.

Abstract: Phenyldifluoromethyl-substituted prolinamide compounds that have a cathepsin S inhibitory effect, and are usable as active ingredients of pharmaceutical compositions for preventing and/or treating autoimmune diseases including systemic lupus erythematosus (SLE) and lupus nephritis, allergies, or graft rejection of an organ, bone marrow or tissue.

Abstract: Phenyldifluoromethyl-substituted prolinamide compounds that have a cathepsin S inhibitory effect, and are usable as active ingredients of pharmaceutical compositions for preventing and/or treating autoimmune diseases including systemic lupus erythematosus (SLE) and lupus nephritis, allergies, or graft rejection of an organ, bone marrow or tissue.

Abstract: [Problem] To provide a compound useful as a cathepsin S inhibitor. [Means for Solution] The present inventors have examined a compound that has a cathepsin S inhibitory effect and is usable as an active ingredient of a pharmaceutical composition for preventing and/or treating autoimmune disease including systemic lupus erythematosus (SLE) and lupus nephritis, allergies, or graft rejection of an organ, bone marrow or tissue, and have found that a phenyldifluoromethyl-substituted prolinamide compound of the present invention has the cathepsin S inhibitory effect, thereby completing the present invention. The phenyldifluoromethyl-substituted prolinamide compound of the present invention has the cathepsin S inhibitory effect and is useful as an agent for preventing and/or treating autoimmune disease including SLE and nephritis, allergies, or graft rejection of an organ, bone marrow or tissue.

Abstract: On the basis of a cathepsin S inhibitory effect, an excellent agent for treating or preventing autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like is provided. It was found that a nitrogen-containing bicyclic heterocyclic compound has an excellent cathepsin S inhibitory effect, thereby completing the invention. The compound of the present invention has an cathepsin S inhibitory effect, and can be used as an agent for preventing and/or treating autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like.

Abstract: On the basis of a cathepsin S inhibitory effect, an excellent agent for treating or preventing autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like is provided. It was found that a nitrogen-containing bicyclic heterocyclic compound has an excellent cathepsin S inhibitory effect, thereby completing the invention. The compound of the present invention has an cathepsin S inhibitory effect, and can be used as an agent for preventing and/or treating autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like.

Abstract: [Problem] On the basis of a cathepsin S inhibitory effect, an excellent agent for treating or preventing autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like is provided. [Means for Solution] It was found that a nitrogen-containing bicyclic heterocyclic compound has the excellent cathepsin S inhibitory effect, thereby completing the invention. The compound of the present invention has the cathepsin S inhibitory effect, and can be used as an agent for preventing and/or treating autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like.

Abstract: [Problem] On the basis of a cathepsin S inhibitory effect, an excellent agent for treating or preventing autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like is provided. [Means for Solution] It was found that a nitrogen-containing bicyclic heterocyclic compound has the excellent cathepsin S inhibitory effect, thereby completing the invention. The compound of the present invention has the cathepsin S inhibitory effect, and can be used as an agent for preventing and/or treating autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like.

Abstract: Provided is a novel compound which is an agent for 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). The provided compound has a PI3K? selective inhibitory action, an IL-2 production inhibitory action, and/or a B cell proliferation inhibitory action, including an activation inhibitory action.

Abstract: Provided is a 2H-chromene compound or a derivative thereof which has an excellent S1P1 agonist action. The 2H-chromene compound or derivative is particularly useful for preventing and/or treating a disease induced by undesirable lymphocyte infiltration or a disease induced by abnormal proliferation or accumulation of cells.

Abstract: [Object] A novel and excellent method for preventing or treating rejection in the transplantation of various organs, allergy diseases, autoimmune diseases, hematologic tumor, or the like, 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), is provided [Means for Solution] It was found that a 3-substituted triazine or 3-substituted pyrimidine derivative exhibits 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 can be an agent for preventing or treating rejection in the transplantation of various organs, allergy diseases (asthma, atopic dermatitis, etc.), autoimmune diseases (rheumatoid arthritis, psoriasis, ulcerative colitis, Crohn's disease, systemic lupus erythematosus, etc.), hematologic tumor (leukemia etc.

Abstract: Provided is a compound which has an excellent S1P1 agonist action, and is useful particularly as an active ingredient for an agent for preventing and/or treating a disease induced by undesirable lymphocyte infiltration or a disease induced by abnormal proliferation or accumulation of cells. According to the present invention, a 2H-chromene compound or a derivative thereof which has an excellent S1P1 agonist action, and is useful particularly as an active ingredient of an agent for preventing and/or treating a disease induced by undesirable lymphocyte infiltration or a disease induced by abnormal proliferation or accumulation of cells can be provided. The 2H-chromene compound and a derivative thereof which are the compounds of the present invention have an S1P1 agonist action, and can be used particularly for prevention and/or treatment of a disease induced by undesirable lymphocyte infiltration or a disease induced by abnormal proliferation or accumulation of cells.

Abstract: [Object] Provided is a compound which has an excellent S1P1 agonist action, and is useful particularly as an active ingredient for an agent for preventing and/or treating a disease induced by undesirable lymphocyte infiltration or a disease induced by abnormal proliferation or accumulation of cells. [Means for Solution] According to the present invention, a 2H-chromene compound or a derivative thereof which has an excellent S1P1 agonist action, and is useful particularly as an active ingredient of an agent for preventing and/or treating a disease induced by undesirable lymphocyte infiltration or a disease induced by abnormal proliferation or accumulation of cells can be provided. The 2H-chromene compound and a derivative thereof which are the compounds of the present invention have an S1P1 agonist action, and can be used particularly for prevention and/or treatment of a disease induced by undesirable lymphocyte infiltration or a disease induced by abnormal proliferation or accumulation of cells.

Abstract: To provide a useful compound as an active ingredient for a preventing and/or treating agent for rejection in the transplantation of an organ, bone marrow, or a tissue, an autoimmune disease, or the like, which has an excellent S1P1 agonist activity.

Abstract: [Problems] To provide a useful compound as an active ingredient for a preventing and/or treating agent for rejection in the transplantation of an organ, bone marrow, or a tissue, an autoimmune disease, or the like, which has an excellent S1P1 agonist activity.

Abstract: To provide a useful compound as an active ingredient for a preventing and/or treating agent for rejection in the transplantation of an organ, bone marrow, or a tissue, an autoimmune disease, or the like, which has an excellent S1P1 agonist activity.

Abstract: [Problems] To provide a useful compound as an active ingredient for a preventing and/or treating agent for rejection in the transplantation of an organ, bone marrow, or a tissue, an autoimmune disease, or the like, which has an excellent S1P1 agonist activity.