1. Studies on positive inotropic agents. I. Synthesis of 3,4-dihydro-6-[4-(3,4-dimethoxybenzoyl)-1-piperazinyl]-2(lH)-quino!inone and related compounds;Tominaga;Chem. Pharm. Bull. (Tokyo),1984
2. In vitro and in vivo studies of 3,4-dihydro-6-[4-(3,4-dimethoxybenzoyl)-1-piperazinyl]-2(1H)-quinolinone (OPC-8212), a novel positive inotropic drug, in various animals;Yamashita;Arzneimittelforschung,1984
3. Positive inotropic effect of 3,4-dihydro-6-[4-(3,4-dimethoxybenzoyl)-1-piperazinyl)-2(lH)-quinolinone (OPC-8212) and mechanism of action in guinea-pig ventricular myocardium;Takeya;Arzneimittelforschung,1984
4. Mode and mechanism of action of 3,4-dihydro-6-[4-(3,4-dimethoxybenzoyl) -1 - piperazinyl) - 2(1 H)-quinolinone (OPC-8212), a novel positive inotropic drug, on the dog heart;Taira;Arzneimittelforschung,1984
5. Involvement of cyclic AMP in the positive inotropic effect of OPC-8212, a new cardiotonic agent, on the canine ventricular muscle;Yanagisawa;Japan. J. Pharmacol,1984