Compounds of the formula ##STR1## wherein each of R, R.sub.1 and R.sub.2 is independently H, alkyl, alkenyl, alkoxy, halo, hydroxy, trifluoromethyl, amino, alkylamino, cyano and nitro; R.sub.3 is carbalkoxy, carboxamide alkanoyl, trifluoromethyl and cyano; and Ar is heteroaryl or ##STR2## wherein R.sub.4 and R.sub.5 have the same meaning as each of R, R.sub.1 and R.sub.2 ; and acid addition salts thereof have cardiotonic and hypertensive activity.
该化合物的
化学式如下:##STR1## 其中R、R.sub.1和R.sub.2中的每一个都可以独立地是H、烷基、烯基、烷氧基、卤素、羟基、三
氟甲基、
氨基、烷基
氨基、
氰基和硝基;R.sub.3是羰基烷氧基、羧酰胺烷酰、三
氟甲基和
氰基;Ar是杂环芳基或##STR2## 其中R.sub.4和R.sub.5的含义与R、R.sub.1和R.sub.2中的每一个相同;以及它们的酸盐具有强心和高血压活性。