4-Quinolinones having antihypertensive activity

Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Bacterium or component thereof or substance produced by said...

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546155, 560 11, 560 16, 564440, A61K 3147, C07D21536

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active

043024602

ABSTRACT:
Compositions which contain a quinolone compound of the general formula ##STR1## wherein n is 0, 1 or 2; R.sub.1 is lower alkyl optionally substituted by hydroxy or C.sub.1-4 alkoxycarbonyl; allyl; propynyl or phenyl- lower alkyl in which the phenyl ring is optionally substituted by 1 or 2 C.sub.1-4 alkoxy groups; R.sub.2 is C.sub.1-4 alkyl with the proviso that when n is 0, R.sub.2 is methyl; and R.sub.3, R.sub.4 and R.sub.5, which may be the same or different, are hydrogen, lower alkyl, lower alkoxy, lower alkanoyl, halo, trifluoromethyl or lower alkylthio show antihypertensive activity.
Compounds of general formula ##STR2## in which n, R.sub.1 R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are as described above are novel subject to the following provisos (a) when R.sub.3, R.sub.4 and R.sub.4 and R.sub.5 are hydrogen R.sub.2 is methyl and R.sub.1 is lower alkyl, R.sub.1 contains more than one carbon atom, and

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