Abstract: A compound represented by formula (I): a salt thereof, an N-oxide thereof, or a solvate thereof (symbols in the formula are as described in the specification). The compounds of the present invention exhibit very low risk of side effects and also have persistent and strong antagonistic activity against CXCR4, and are therefore useful as pharmaceuticals, for example, as a preventive and/or therapeutic agent for inflammatory and immune diseases, infections (for example, HIV infection), diseases associated with HIV infection (for example, acquired immunodeficiency syndrome (AIDS)), cancer, cancer metastasis, psychoneurotic diseases and cardiovascular diseases (for example, retinopathy), metabolic diseases, cancerous diseases, or as an agent for regeneration therapy.

Abstract: The invention relates to a compound represented by formula (I): a salt thereof, an N-oxide thereof, or a solvate thereof (symbols in the formula are as described in the specification). The compound of the present invention exhibits very low risk of side effects and also has persistent and strong antagonistic activity against CXCR4, and is therefore useful as pharmaceuticals, for example, preventive and/or therapeutic agent for inflammatory and immune diseases, infections (for example, HIV infection), diseases associated with HIV infection (for example, acquired immunodeficiency syndrome (AIDS)), cancer, cancer metastasis, psychoneurotic diseases and cardiovascular diseases (for example, retinopathy), metabolic diseases, cancerous diseases, or an agent for regeneration therapy.

Abstract: The present invention relates to a function inhibitor of an effector cell comprising a CCR5 antagonist. Since the function inhibitor of an effector cell comprising a CCR5 antagonist inhibits the function of effector cells which play an important role in formation of diseases and the like, it is effective for the prevention and/or treatment of, for example, a transplant rejection (e.g., rejection of a solid organ graft, rejection of islet cell transplantation in diabetes mellitus, graft-versus-host disease (GVHD), etc.), an autoimmune disease (e.g., arthritis, rheumatoid arthritis, multiple sclerosis, ulcerative colitis, etc.), an allergic disease (e.g., asthma, etc.), an ischemic disease (e.g., ischemia-reperfusion injury, etc.), cancer or a metastatic disease or the like.