Abstract: The invention provides a photographic element comprising a support bearing at least one silver halide emulsion layer having associated therewith a 5-pyrazolone photographic coupler represented by the formula (I): ##STR1## wherein a) substituents G.sup.1, G.sup.2 and G.sup.3 are individually selected from the group consisting of hydrogen, halogen, alkyl, alkoxy, aryloxy, acylamino, alkylthio, arylthio, sulfonamido, sulfamoyl, sulfamido, carbamoyl, diacylamino, alkoxycarbonyl, aryloxycarbonyl, alkoxysulfonyl, aryloxysulfonyl, alkylsulfonyl, alkylsulfoxyl, arylsulfoxyl, arylsulfonyl, alkoxycarbonylamino, aryloxycarbonylamino, alkylureido, arylureido, acyloxy, nitro, cyano, and carboxy groups;b) a and b are individually integers from 0 to 5, provided that the sum of the sigma values for G.sup.1 and G.sup.2 is at least 1.3; and c is an integer from 0 to 4;c) Z is a group of the formula (II): ##STR2## wherein R.sup.

Abstract: Disclosed and claimed is the cardiotonic use of 1-R.sub.1 -5-(3-R'-4-R"-phenyl)-6-R-2(1H)-pyridinones (II), where R.sub.1 is hydrogen, lower-alkyl or lower-hydroxyalkyl, R is lower-alkyl or hydrogen, and, R' and R" are each hydrogen, amino or hydroxy, at least one of R' or R" being other than hydrogen, or where R' is nitro when R" is hydroxy, or pharmaceutically acceptable acid-addition salts thereof where at least one of R' and R" is amino. Also disclosed and claimed are 1-R.sub.1 -5-(3-R'-4-R"-phenyl)-6-R-2(1H)-pyridinones (I), where R.sub.1, R' and R" are defined as above and R is lower-alkyl and acid-addition salts thereof where at least one of R' and R" is amino. Also shown and claimed is the process which comprises reacting 1-R.sub.1 -1,2-dihydro-2-oxo-5-(3-R'-4-R"-phenyl)-6-R-nicotinonitrile, where R.sub.

Abstract: Disclosed and claimed is the cardiotonic use of 1-R.sub.1 -5-(3-R'-4-R"-phenyl)-6-R-2(1H)-pyridinones (II), where R.sub.1 is hydrogen, lower-alkyl or lower-hydroxyalkyl, R is lower-alkyl or hydrogen, and, R' and R" are each hydrogen, amino or hydroxy, at least one of R' or R" being other than hydrogen, or where R' is nitro when R" is hydroxy, or pharmaceutically acceptable acid-addition salts thereof where at least one of R' and R" is amino. Also disclosed and claimed are 1-R.sub.1 -5-(3-R'-4-R"-phenyl)-6-R-2(1H)-pyridinones (I), where R.sub.1, R' and R" are defined as above and R is lower-alkyl and acid-addition salts thereof where at least one of R' and R" is amino. Also shown and claimed is the process which comprises reacting 1-R.sub.1 -1,2-dihydro-2-oxo-5-(3-R'-4-R"-phenyl)-6-R-nicotinonitrile, where R.sub.