| 摘要 |
(A) Benzimidazole derivs. (I), acid salts and metal complexes:- X = O, S; R1 = 5-membered monocyclic heteroaromatic ring contng. 1-3 heteroatoms chosen from O, S and N. R2 = H, OH, alkoxy/alkyl, aralkyl, acyl, carboxyalkoxy, carbamoyl, alkoxycarbonyl; R3 = H, alkyl; R4 = H, alkyl/alkoxy/alkylthio/mono or dialkylamino, cycloalkyl, aryl, aryloxy/thio, aralkyl, heteroaryl, heteroaryloxy/thio, cycloalkylamino. (B) The intermediates:- (II) R = alkyl, aryl. As veterinary anthelmintics against nematodes; doses 10-70 mg/kg (oral). 5-MeO/EtO/i-PrO-carbonylamino-2-(4'-thiazolyl) benzimidazoles; 5-PhCO/p-F-benzoylamino-2-(4'thiazolyl) benzimidazoles. |
