| abstract |
(57) [Summary] [Object] To provide a novel prostaglandin I 2 derivative having strong platelet aggregation and antianginal activity and weak toxicity. [Structure] A novel prostaglandin I 2 derivative comprising a novel prostaglandin I 2 represented by the following chemical formula, its ester, or its salt. However, R: an alkyl group, an alkenyl group, an alkynyl group, or a cycloalkyl group, k, l, m, n: each represents an integer of 0 to 6, and 0 ≦ k + n ≦ 4, 1 ≦ l + m ≦ 6 1] |