| abstract |
Compounds represented by general formula (1) which are useful as remedies and preventives for diseases caused by acceleration in the sodium/proton exchange system, wherein R1, R2, R3, R4 and R5 represent each hydrogen, alkyl, substituted alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, a saturated aromatic ring, acyl, etc.; Y1, Y2, Y3 and Y4 represent each a single bond, -CH2-, -O-, -CO-, etc., provided that at least two of Y1 to Y4 represent each a group other than a single bond; and Z may be absent or one or more Zs may be present and each represents alkyl, substituted alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, a saturated aromatic ring, halogeno, carboxy, alkoxycarbonyl, an aromatic group, acyl, etc. |