T. Fujioka et al., SYNTHESIS AND BIOLOGICAL-ACTIVITIES OF OPTICALLY-ACTIVE XYBENZYLAMINO)-2-HYDROXYPROPOXY]-2(1H)-QUINOLINONE (OPC-18790), Chemical and Pharmaceutical Bulletin, 44(8), 1996, pp. 1596-1598
The enantiomers of xybenzylamino)-2-hydroxypropoxy]-2(1H)-quinolinone
(OPC-18790), a novel cardiotonic agent, were synthesized and evaluated
for positive inotropic activity. The key intermediates, 2,3-epoxyprop
oxy derivatives, were obtained by the alkylation of 6-hydroxy-2(1H)-qu
inolinone with optically active epichlorohydrin and subsequent ring cl
osure. In an in vitro study, the (R)-(+)-isomer was about id-fold more
potent than the (S)-(-)-isomer.