Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, straight or branched alkyl of 1 to 3 carbon atoms or benzyl, R.sub.2 is straight or branched alkyl of 1 to 3 carbon atoms, or R.sub.1 and R.sub.2, together with each other and the nitrogen atom to which they are attached, are pyrrolidino, piperidino or hexamethyleneimino, A and B are each nitrogen or methylidenyl (=CH-), but other than both nitrogen or methylidenyl at the same time, and n is 2 or 3, And non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as the salts are useful as bronchospasmolytics.
公式为 ##STR1## 的化合物,其中R.sub.1为氢,1至3个碳原子的直链或支链烷基或苄基,R.sub.2为1至3个碳原子的直链或支链烷基,或R.sub.1和R.sub.2与彼此和它们所附着的氮原子一起是
吡咯烷基,
哌啶基或己
亚甲基亚胺基,A和B分别为氮或甲基亚烯基(=CH-),但不同时为氮或甲基亚烯基,n为2或3,以及其无毒、药理学上可接受的酸盐;这些化合物以及盐在支气管痉挛解除方面有用。