| 摘要 |
<p>A quinolone cardiac stimulant of the formula:- <CHEM> or a pharmaceutically acceptable salt thereof, wherein R, which is attached to the 5-, 7- or 8-position of the quinolone, is H or C1-C4 alkyl; R<1> is a group of the formula -S(O)n.C1-C4 alkyl where n is 0, 1 or 2; and R<2> and R<3>, which can be the same or different, are H or C1-C4 alkyl.</p> |
