Cardiac stimulant 1-(3- or 4-substituted piperidino)phthalazines

Details Cardiac stimulant 1-(3- or 4-substituted piperidino)phthalazines Cardiac stimulant 1-(3- or 4-substituted piperidino)phthalazines

1980-07-21

1983-01-25

Rizzo, Nicholas S.

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Bacterium or component thereof or substance produced by said...

544237, C07D23730

Patent

active

043703283

ABSTRACT:
1-(3- or 4-substituted piperidino)phthalazines of the formula ##STR1## wherein R is C.sub.1-6 alkyl; Y is a 3- or 4-position substituent and is --X-(CHR.sup.1).sub.m -Z wherein R.sup.1 is hydrogen or C.sub.1-6 alkyl; m is 1 or 2; X is oxygen or a direct link provided that when m is 1, X is a direct link; and Z is --N(R.sup.2)COR.sup.3, --N(R.sup.2)COOR.sup.3, --N(R.sup.2)SO.sub.2 R.sup.3, --N(R.sup.2)SO.sub.2 NR.sup.4 R.sup.5, --N(R.sup.2)SOR.sup.3, --N(R.sup.2)CONR.sup.4 R.sup.5 or --OCONR.sup.4 R.sup.5, wherein R.sup.2 and R.sup.5 are each independently hydrogen or C.sub.1-6 alkyl; R.sup.3 is C.sub.1-6 alkyl, phenethyl, benzyl, C.sub.3-7 cycloalkyl, phenyl or pyridyl; R.sup.4 is hydrogen or R.sup.3 ; provided that when X is a direct link, R.sup.3 or R.sup.4 is C.sub.3-7 cycloalkyl; the pharmaceutically acceptable acid addition salts thereof; processes for their preparation; and their use as cardiac stimulants and phosphodiesterase inhibitors.

REFERENCES:
patent: 4001422 (1977-01-01), Danilewicz et al.
patent: 4289772 (1981-09-01), Campbell et al.

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