The present invention relates to novel isoxazole and thiazole compounds having an excellent lysophosphatidic acid (LPA) receptor antagonistic activity represented by general formula [1] or salts thereof: wherein R1 and R2 represents an optionally substituted alkyl group or the like; R3 represents a hydrogen atom or the like; R4 represent a group selected from the group consisting of (I) optionally substituted phenyl, aryl, or heterocycle, (II) substituted or nonsubstituted alkyl, and (III) substituted or nonsubstituted alkenyl, alternatively, R3 and R4 may form a ring structure together with a carbon atom to which they bind; and X represents an oxygen atom or a sulfur atom, provided that, when R3 is a hydrogen atom, R4 represents a group other than methyl, and the use thereof as a medicine.
本发明涉及通式[1]代表的具有优异
溶血磷脂酸(LPA)受体拮抗活性的新型
异噁唑和
噻唑化合物或其盐:其中 R1 和 R2 代表任选取代的烷基或类似基团;R3 代表氢原子或类似基团;R4 代表选自由以下组成的基团:(I) 任选取代的苯基、芳基或杂环;(II) 取代或未取代的烷基;(III) 取代或未取代的烯基;或者,R3 和 R4 可与它们结合的碳原子一起形成环状结构;X 代表氧原子或
硫原子,但当 R3 为氢原子时,R4 代表甲基以外的基团,并将其用作药物。