| 摘要 |
1,4-dihydropyridine derivatives of formula (I): <IMAGE> (I) wherein Ar1 and Ar2 each represent an unsubstituted or substituted aromatic hydrocarbon or aromatic heterocyclic group; and R1 represents -CO2R2, -SO2R3, -COR4, -CON(R5)2, -CH-or -NO2 in which R2 is hydrogen, a straight chain, branched chain or cyclic saturated hydrocarbon group, which may have a substituent or a straight chain, branched chain or cyclic unsaturated hydrocarbon group having 2 to 10 carbon atoms, which may have a substituent, R3 is an alkyl group having 1 to 4 carbon atoms, R4 is an alkyl group having 1 to 4 carbon atoms or a phenyl group; and R5 is an alkyl group having 1 to 4 carbon atoms.
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