A compound which has excellent LCAT activation effects, is useful as an active ingredient of a therapeutic or preventive agent for arteriosclerosis, arteriosclerotic cardiovascular disease, coronary heart disease (including heart failure, myocardial infarction, angina, cardiac ischemia, cardiovascular disorder, and angioplastic restenosis), cerebrovascular disease (including cerebral stroke and cerebral infarction), peripheral vascular disease (including diabetic vascular complication), dyslipidemia, low HDL cholesterol, high HDL cholesterol, or kidney disease, in particular, of an anti-arteriosclerosis agent, and is represented by general formula (I) (I) [In the formula, R is an aryl group which may be substituted or a heteroaryl group which may be substituted, and R1 is a hydrogen atom or a hydroxyl group.] or a pharmacologically acceptable salt thereof.
