| 摘要 |
Furanyl-(2)-1,2,4-oxadiazoles of the formula <IMAGE> wherein A represents an aromatic mononuclear or binuclear ring system which with two adjacent carbon atoms is fused with the furan nucleus in the manner indicated, R represents hydrogen, a lower alkyl group, an optionally substituted phenyl group, as well as an optionally functionally modified carboxy group, X represents a direct bond, as well as the following divalent radicals <IMAGE> <IMAGE> <IMAGE> <IMAGE> B represents a straight-chained or branched, optionally substituted alkyl group or an optionally substituted aryl or heteroaryl group.
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