| abstract |
(57) [Summary] [Structure] The following general formula (I): (The symbols in the above formula have the following meanings: R: hydrogen atom, ester residue A 1 : single bond, alkylene group A 2 : lower alkylene group n: 0 or 1) or a carboxylic acid derivative thereof salt. [Effect] It has a platelet aggregation inhibitory action based on the GPIIb / IIIa antagonistic action and is useful as an antithrombotic agent and the like. |