A novel cyclic compound having a 4-pyridylalkylthio group having an (un)substituted amino group introduced therein or a salt of the compound. They are useful as a medicine. The cyclic compound is a compound represented by the following formula [I], which is useful for the treatment of diseases in which angiogenesis participates. In the following formula [I], ring A represents a benzene ring or a 5- or 6-membered aromatic heterocycle optionally fused with a cycloalkane ring; B represents alkylene; R1 and R2 each represents H, (substituted) aryl, (substituted) heterocyclic group, etc.; R3 and R4 each represents H, (substituted) alkyl, (substituted) cycloalkyl, -Z-R5, etc.; R5 represents (substituted) alkyl, (substituted) aryl, (substituted) heterocyclic group, etc.; X and Y each represents H, etc.; Z represents -CO-, -COO-, -CONR6-, -SO2-, etc.; R6 represents H, etc.; p is 0, 1, or 2; and q is 0 or 1.