| 摘要 |
<p>A compound of the formula: <CHEM> (wherein R<1> is hydrogen, C1-C5 alkyl, C1-C5 alkoxy, C1-C5 alkoxycarbonyl, or trifluoromethyl; R<2> is hydrogen, C1-C5 alkoxycarbonyl, C6-C12 aryloxycarbonyl, C1-C5 alkanoyloxy-C1-C5 alkyl, C1-C5 alkoxycarbonyloxy-C1-C5 alkyl, C1-C5 acylamino-C1-C5 alkyl, 2-hydroxy-1-C2-C5 alkenyl, phthalimido-C1-C5 alkyl, halogeno-C1-C5 alkoxycarbonyl-C1-C5 alkyl, hydroxy-C1-C5 alkyl, C1-C5 alkylthio-C1-C5 alkyl, or C1-C5 alkylsulfinyl-C1-C5 alkyl; <CHEM> m is an integer of 0 or 1; R<3> and R<4> each is hydrogen, halogen, cyano, C1-C5 alkyl, amino, C1-C5 alkoxy, C6-C12 aryl-C1-C5 alkoxy, C1-C5 alkoxycarbonyl, fluoro-C1-C5 alkoxy, C1-C5 alkanoylamino, or carbamoyl) or its salt, being useful as antiulcer agents, is provided.</p> |
