The present invention comprises a compound for the prevention and/or treatment of cardiovascular diseases. The compound is an atropisomer of a compound represented by the following general formula (I): wherein R1 represents a C1-C3 alkyl group; R2 represents a 2-hydroxy-C4-C6 alkyl group; R3 represents a halogeno group, a halogeno-C1-C3 alkyl group and the like; R4 represents a hydrogen atom, a halogeno group and the like; R5 represents a C1-C3 alkyl group; and R6 represents a hydrogen atom, a halogeno group and the like] or atropisomers thereof.本發明包含用於預防及/或治療心血管疾病之化合物。該化合物係由下述通式(I)代表之化合物或其阻轉異構體:其中R1代表C1-C3烷基;R2代表2-羥基-C4-C6烷基;R3代表鹵素基團、鹵代C1-C3烷基及諸如此類;R4代表氫原子、鹵素基團及諸如此類;R5代表C1-C3烷基;且R6代表氫原子、鹵素基團及諸如此類。