| 摘要 |
NEW MATERIAL:The compound of formula I (R<1> is alkyl, aralkyl, alkenyl, alkynyl or acylalkyl; R<2> is alkyl, phenyl, acyloxyalkyl, pyridyl, OH, acyl, etc.; R<3> is H, alkyl, halogenoalkyl, aminoalkyl, CN, NH2, nitroso, carboxy, etc.; A and B are N or CH) or its salt. EXAMPLE:3-Ethoxycarbonyl-2-methyl-8-propoxyimidazo[1,2-a]pyridine. USE:It has gastric inhibitory action, gastric mucosa protecting action and antiulcer action and is useful as gastric inhibitory agent and a preventive and remedy for gastric diseases such as gastric ulcer. PREPARATION:For example, aminopyridine ethers of formula II [R<1> is (cycloalkyl)alkyl or alkenyl] are made to react with a compound of formula III (R<2a> and R<3a> are part of R<2> and R<3>, respectively; X is halogen, etc.) to obtain the corresponding compound of formula I.
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