[(1,3-dioxo-1,3-propanediyl)diimino]bisbenzoic acid...

C - Chemistry – Metallurgy – 07 – D

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C07D 333/24 (2006.01) C07D 207/337 (2006.01) C07D 209/24 (2006.01) C07D 213/56 (2006.01) C07D 265/22 (2006.01) C07D 307/54 (2006.01) C07D 307/88 (2006.01) C07D 317/36 (2006.01)

Patent

CA 1248530

ABSTRACT [(1,3,-DIOXO-1,3-PROPANEDIYL)DIIMINO] BISBENZOIC ACID DERIVATIVES AND THEIR USE The invention provides compounds of the general formula: Image (I ) wherein A and B are both hydrogen, or one of A and B is a group (G) of the formula: Image (G) and the other is a group R5 wherein R1 is an aryl group or a heterocyclic group, both of them being optionally substituted, and R4 and R5 are both hydrogen or together form a single chemical bond, R2 and R2' are independently hydrogen, halogen, nitro, lower alkyl or lower alkoxy, and R3 and R3' are independently carboxy or its functional derivative, with the proviso that

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