The present invention provides a compound represented by formula [I' shown below or a pharmaceutically acceptable salt thereof that has an inhibitory effect on 20-HETE producing enzyme, wherein the structure represented by formula [III] shown below represents any of the structures represented by formula group [IV] shown below, wherein R 1 represents a hydrogen atom, a fluorine atom, methyl, etc.； R 2 , R 3 , and R 4 each independently represent a hydrogen atom, a fluorine atom, or methyl； W represents a single bond, C 1-3 alkanediyl, or the formula -O-CH 2 CH 2 -； and ring A represents (a) substituted C 4-6 cycloalkyl, (b) substituted 4- to 6-membered saturated nitrogen-containing heterocyclyl, (c) substituted phenyl, (d) substituted pyridyl, (e) substituted 2,3-dihydrobenzofuran, (f) 4- to 6-membered saturated oxygen-containing heterocyclyl, etc.
