| abstract |
Ia, Ib, wherein R1 and R2 are each independently hydrogen, alkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, hydroxy, aryl or heteroaryl or amino, the alkyl, aryl, heteroaryl or amino group being optionally substituted; R3 is hydrogen, optionally substituted alkyl of 1-6 carbon atoms, optionally substituted aryl or heteroaryl, and salts, ethers and esters thereof are useful as cytoprotective agents, especially as antiulcerogenic or gastro-protective agents. <IMAGE> <IMAGE> |