申请人:Kissei Yakuhin Kogyo Kabushiki Kaisha (Kissei Pharmaceutical Co. Ltd.)
公开号:US04026896A1
公开(公告)日:1977-05-31
New aromatic amidocarboxylic acid derivatives of the general formula: ##STR1## wherein R.sub.1 and R.sub.2 each represent a hydrogen atom or an alkyl gp with 1-4 carbon atoms; R.sub.3 and R.sub.4 each represent a hydrogen atom or may be combined together to form an additional chemical bond; X represents a hydroxyl group, a halogen atom, a straight or branched chain saturated or unsaturated alkyl group with 1-4 carbon atoms, a straight or branched chain saturated or unsaturated alkoxy group with 1-4 carbon atoms, an acyloxy group with 1-4 carbon atoms, or a cycloalkyl group with up to 6 carbon atoms; n is zero or an integer of 1-3 with the proviso that when n is 2 or 3, X's may be the same or different and that when two X's are commonly the alkyl or alkoxy group, both X's may be combined together to form a ring; and Y represents a straight or branched chain alkylene group or a straight or branched chain oxyalkylene group connected to the benzene nucleus through an oxygen atom, as well as physiologically acceptable salts thereof. The new compounds possess a strong antiallergic effect and are thus useful for the treatment of asthma, hay fever, urticaria and atopic dermatitis. The above-mentioned aromatic amidocarboxylic acid and a salt thereof are prepared, for example, by reacting a reactive functional derivative of the general formula: ##STR2## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, X and n have the same meanings as given above, with an aminophenylalkylcarboxylic acid derivative or an aminophenoxyalkylcarboxylic acid dervative of the general formula: ##STR3## wherein Y has the same meaning as given above, and if desired, converting the resulting amidocarboxylic acid into a corresponding salt thereof or vice versa.
新的芳香族酰胺羧酸衍生物的一般公式如下:##STR1## 其中R.sub.1和R.sub.2分别表示氢原子或具有1-4个碳原子的烷基基团;R.sub.3和R.sub.4分别表示氢原子或可以结合在一起形成额外的化学键;X表示羟基、卤原子、具有1-4个碳原子的直链或支链饱和或不饱和烷基基团、具有1-4个碳原子的直链或支链饱和或不饱和烷氧基基团、具有1-4个碳原子的酰氧基基团或具有最多6个碳原子的环烷基基团;n为零或1-3的整数,条件是当n为2或3时,X可能相同或不同,当两个X都是烷基或烷氧基团时,两个X可以结合在一起形成环;Y表示连接到苯环上的直链或支链烷基基团或直链或支链氧烷基基团,通过氧原子连接,以及其生理上可接受的盐。这些新化合物具有强烈的抗过敏作用,因此可用于治疗哮喘、花粉症、荨麻疹和特应性皮炎。上述提到的芳香族酰胺羧酸及其盐可以通过将一般公式的反应性功能衍生物:##STR2## 其中R.sub.1、R.sub.2、R.sub.3、R.sub.4、X和n具有上述给定的相同含义,与氨基苯基烷基羧酸衍生物或氨基苯氧基烷基羧酸衍生物的一般公式反应而制备得到,其中Y具有上述给定的相同含义,如果需要,将所得的酰胺羧酸转化为相应的盐或反之亦然。