1-R.sub.1 -3-amino-5-(3-R'-4-R"-phenyl)-6-R-2(1H)-pyridinones or salts thereof, which are useful as cardiotonics, where R.sub.1 is hydrogen, lower-alkyl, or lower-hydroxyalkyl, R is hydrogen or lower-alkyl, and, R' and R" are each hydrogen, hydroxy or amino at least one of R' or R" being other than hydrogen, are prepared by reacting the corresponding 3-carbamyl compound with a reagent capable of converting carbamyl to amino or by first reacting the corresponding 3-carbamyl compound where R' and R" are each hydrogen, nitro or lower-alkoxy at least one of R' and R" being other than hydrogen with a reagent capable of converting carbamyl to amino and then reacting the resulting 3-amino compound where R' and/or R" are/is lower-alkoxy and/or nitro with a reagent capable of converting lower-alkoxy to hydroxy and/or with a reagent capable of converting nitro to amino. Preparation of the corresponding 3-carbamyl and 3-cyano compounds is shown, the latter including cardiotonically active novel 1-R.sub.1 -1,2-dihydro-5-(3-R.sub.2 -4-R.sub.3 -phenyl)-6-R-nicotinonitriles where R.sub.1 and R are defined as above, and R.sub.2 and R.sub.3 have the above given definitions for R' and R" or where R.sub.2 is nitro and R.sub.3 is hydroxy. Also shown are cardiotonic compositions and cardiotonic method of use of above-said compounds.
1-R.sub.1 -3-
氨基-5-(3-R'-4-R"-苯基)-6-R-2(1H)-
吡啶酮或其盐,可用作心脏强心剂。其中R.sub.1为氢、较低的烷基或较低的羟基烷基,R为氢或较低的烷基,R'和R"分别为氢、羟基或
氨基,其中至少有一个不是氢,通过将相应的3-
氨基甲酰化合物与能够将甲酰化转化为
氨基的试剂反应或首先将R'和R"均为氢、硝基或较低的烷氧基,其中至少有一个不是氢的相应3-
氨基甲酰化合物与能够将甲酰化转化为
氨基的试剂反应,然后将所得到的3-
氨基甲酰化合物与能够将较低的烷氧基转化为羟基和/或能够将硝基转化为
氨基的试剂反应,制备出上述化合物。所示的还有相应的3-
氨基甲酰化合物和3-
氰基化合物的制备方法,其中后者包括具有心脏强心活性的新型1-R.sub.1-1,2-二氢-5-(3-R.sub.2-4-R.sub.3-苯基)-6-R-烟酰胺,其中R.sub.1和R的定义如上,R.sub.2和R.sub.3具有上述给出的R'和R"的定义,或者R.sub.2为硝基,R.sub.3为羟基。还显示了上述化合物的心脏强心组合物和心脏强心使用方法。