| 摘要 |
The invention relates to compounds of the general formula I <IMAGE> wherein R1 represents one up to and including four, the same or different substituents selected from alkyl(1-6 C), alkoxy(1-6 C), hydroxy, halogen, NO2+L, CF3 or the group -NR5R6, whereby two substituents taken together may also represent a methylene-dioxy group, X represents nitrogen or the group <IMAGE> n has the value 0, 1 or 2, R3 represents one of the moieties: <IMAGE> <IMAGE> the latter meaning of R3 (amide) only under the condition that for X is nitrogen the meaning of R1 is limited to substituents selected from hydroxy, alkoxy(1-6 C) and methylenedioxy, and R4, R5 and R6 represent hydrogen or alkyl(1-6 C), and pharmaceutically acceptable salts thereof, suitable in the treatment of heart failure. |
