| 摘要 |
Compounds of the formula: <IMAGE> wherein R represents hydrogen or alkyl of 1 through 4 carbon atoms, and R1 and R2 represent hydrogen or alkyl of 1 through 15 carbon atoms, or alkyl of 1 through 15 carbon atoms substituted by one substituent selected from (i) hydroxy, (ii) alkylamino in which the alkyl radical is of 1 through 4 carbon atoms, (iii) dialkylamino in which the alkyl radicals are of 1 through 4 carbon atoms, (iv) phenyl, (v) carboxy, and (vi) alkoxycarbonyl in which the alkoxy radical is of 1 through 4 carbon atoms, or R1 and R2 together with the nitrogen atom to which they are attached represent a five- or six-membered heterocyclic radical, are new compounds. They possess pharmacological properties and are particularly useful in the treatment of gastro-intestinal ulcers. |
