Therapeutically active 2- and 3-substituted benzoic acid derivatives having the general formula ##STR1## wherein X is OH, NH.sub.2 or an anilino group having the phenyl ring unsubstituted or substituted by chlorine or by a 4-ethoxy group; or ##STR2## wherein X is NH.sub.2 or an anilino group having the phenyl ring unsubstituted or substituted by chlorine or by a 4-ethoxy group; pharmacologically acceptable mineral or organic acid addition salts including quaternary ammonium salts of those compounds having a basic nitrogen atom and alkaline or alkaline earth metal salts of those compounds wherein X is OH. Compounds of the formula wherein X is amino or anilino are prepared by reacting 3-propionylsalicyclic acid or a functional derivative thereof with ammonia or an amine in an anhydrous solvent. Compounds of the formula wherein X is OH are prepared by etherifying the ethylester of 3-propionylsalicyclic acid with diethylaminoethylchloride in the presence of an acid binding agent in a ketonic solvent and thereafter hydrolyzing the ester group with a mineral acid or an alkaline earth metal hydroxide.
具有通式 ##STR1## 的治疗活性2-和3-取代
苯甲酸衍
生物,其中X为OH、NH.sub.2或苯环未取代或取代为
氯或4-乙氧基的
苯胺基;或 ##STR2## 其中X为NH.sub.2或苯环未取代或取代为
氯或4-乙氧基的
苯胺基;包括具有碱性氮原子的化合物的药理学上可接受的矿物质或有机酸盐和X为OH的化合物的碱性或碱土
金属盐。其中X为
氨基或
苯胺基的化合物是通过在无
水溶剂中将3-丙酰基
水杨酸或其官能衍
生物与
氨或胺反应制备而成。其中X为OH的化合物是通过在酮溶剂中使用酸性结合剂的情况下,以二乙
氨乙基
氯化物醚化3-丙酰基
水杨酸的
乙酯酯,并随后使用矿物质酸或碱土
金属氢氧化物
水解酯基团制备而成。