| 摘要 |
Novel 3-amino-2-benzoyl-acrylic acid derivatives of the formula <IMAGE> in which R1 represents the nitrile group, an ester group -COOR4 or carboxamide group <IMAGE> R4 denoting C1-C6-alkyl, and R5 and R6 representing hydrogen or C1-C3-alkyl or phenyl, R2 and R3, which can be identical or different, represent a C1-C6-alkyl radical and, furthermore, can form, together with the nitrogen atom to which they are bonded, a 5- or 6-membered heterocyclic ring which can additionally contain as ring member the atoms or groups -O-, -S-, -SO- or -SO2-, X represents halogen, X1 denotes hydrogen, methyl, nitro or halogen, X2 denotes halogen or methyl, and X3 denotes hydrogen or halogen, are prepared by reacting <IMAGE> The products can be converted into known antibacterials.
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