| abstract |
The present invention provides a novel platelet aggregation inhibitor that can reduce or prevent various symptoms caused by platelet aggregation, and a blood flow improving agent and an antithrombotic agent containing the inhibitor as an active ingredient. The following formulas (1) to (6) A platelet aggregation inhibitor containing, as an active ingredient, at least one compound selected from the group of compounds having an oxygen-containing cyclic structure represented by the formula, and a blood flow improving agent and an antithrombotic agent containing the compound as an active ingredient. As the platelet aggregation inhibitor, (R) -2-deceno-δ-lactone is particularly preferable. [Selection figure] None |