| 摘要 |
PCT No. PCT/FI89/00165 Sec. 371 Date Jan. 31, 1991 Sec. 102(e) Date Jan. 31, 1991 PCT Filed Sep. 1, 1989 PCT Pub. No. WO90/02724 PCT Pub. Date Mar. 22, 1990. (* CHEMICAL STRUCTURE *) (Ia) (* CHEMICAL STRUCTURE *) (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 to 6 carbon atoms or optionally substituted aryl or heteroaryl and salts, ethers and esters thereof are useful as cytoprotective agents, especially as antitulcerogenic or gastroprotective agents.
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