| 摘要 |
Compounds of the formula I <CHEM> wherein R<3> is selected from the group consisting of hydrogen or methyl, m is an integer 0 or 1, whereby when m is 0, R<4> and R<3> are the same and are selected from the group consisting of methoxy, fluoro, bromo, and chloro in 2- and 6-position, whereby when m is 1, R<4> is hydrogen and R<5> is selected from the group consisting of hydrogen, methoxy, ethoxy, acetyl, methyl, hydroxymethyl, cyano, chloro, fluoro, bromo, or hydroxy, or a pharmaceutically acceptable salt thereof, as well as their preparation, pharmaceutical preparations containing the same, and method of treating cardiac failure. The compounds which possess beta-adrenoceptor stimulating activity are intended for treatment of cardiac disease whereby the compounds possess a pronounced inotropic effect. |
