This invention relates to substituted 2-aminothiochromones of the general structure I: ##STR1## wherein R.sub.1 and R.sub.2 may be hydrogen; lower alkyl or lower alkoxy of 1 to 6 carbon atoms; or halogen such as chloro or bromo; and X may be cyano or carboxamido. The compounds are prepared using a thiosalicylic acid or a substituted thiosalicylic acid as starting material. The compounds of this invention are active in the prevention of allergic and asthmatic reactions in mammals.
本发明涉及一般结构式I的取代2-
氨基
硫色酮:##STR1## 其中R.sub.1和R.sub.2可以是氢;1至6个碳原子的低烷基或低烷氧基;或卤素,例如
氯或
溴;X可以是
氰基或羧酰胺基。该化合物是使用
硫代水杨酸或取代
硫代水杨酸作为起始材料制备的。本发明的化合物在预防哺乳动物的过敏和哮喘反应方面具有活性。