Patent ID: RE38962

Claim:
A nitrogen heterocyclic aromatic derivative having the following general formula: where X and Y are selected from N, C and CH, provided they are different from each other, or X and Y are both nitrogen; R is hydrogen or —COR 8 where R 8 is a saturated or non-saturated C 1 -C 10 alphatic hydrocarbon, R 1 has the following general formula: where R 3 is hydrogen, halogen, C 1 -C 10 alkyl or C 1 -C 10 alkoxyl, R 4 is hydrogen, C 1 -C 10 alkyl or C 1 -C 10 alkoxyl, or R 3 and R 4 together form a methylendioxy group, R 2 has the following general structure: and R 5 is selected from: where Z=OR 7 where R 7 is a saturated or non-saturated, linear or branched C 1 -C 10 aliphatic hydrocarbon, or R 7 has the following formula: where R, R 1 , X and Y are defined as above and R 6 is hydrogen, halogen, alkyl or alkoxyl C 1 -C 10 , or Z is NHR 8 where R 8 is a linear or branched C 1 -C 20 alkyl chain, provided that when X=Y=N and R is H or —CONHCH 2 CH 3 , Z is not NHR 8 where R 8 is —CH 2 CH 3 , and provided that R 1 and R 2 are not located on two adjacent atoms of the heterocyclic aromatic ring, and further provided that when X=Y=N and R 5 is —COZ where Z=OR 7 , R 7 is a saturated or non-saturated linear or branched C 5 -C 20 aliphatic hydrocarbon.