The present invention relates to indan derivatives represented by the formula (1) or pharmaceutically acceptable salts thereof: ##STR1## [wherein R.sup.1 represents C1 to C12 alkyl, benzyl, styryl, naphthyl, optionally substituted phenyl or optionally substituted thienyl; R.sup.2 represents carboxyl, C1 to C4 alkoxycarbonyl, ##STR2## Y represents --(CH.sub.2).sub.p -- (wherein p represents an integer of 0 to 5), --CO--(CH.sub.2).sub.q .about., --CH(OH)--(CH.sub.2).sub.q .about., (wherein q represents an integer of 1 to 4, and the symbol .about. represents a linkage to R.sup.2), oxymethylene or ethylene; and n represents an integer of 1 to 4]. The compounds according to the present invention potently antagonize the action of thromboxane A.sub.2, and therefore useful for the treatment and prevention of diseases caused by thromboxane A.sub.2 such as angiosis, vasospasm, asthma and the like.
本发明涉及由公式(1)表示的
吲哚衍
生物或其药学上可接受的盐:##STR1## [其中R.sup.1表示C1至C12烷基,苯甲基,
苯乙烯基,
萘基,可选取代的苯基或可选取代的
噻吩基;R.sup.2表示羧基,C1至C4烷氧羰基,##STR2## Y表示--(CH.sub.2).sub.p --(其中p表示0至5的整数),--CO--(CH.sub.2).sub.q .about.,--CH(OH)--(CH.sub.2).sub.q .about. (其中q表示1至4的整数,符号.about.表示与R.sup.2的连接),氧甲基或
乙烯基;n表示1至4的整数。根据本发明的化合物能有效拮抗血栓素A.sub.2的作用,因此可用于治疗和预防由血栓素A.sub.2引起的疾病,如血管新生,血管痉挛,哮喘等。