| abstract |
The invention concerns a compound of formula (I), Formula (I), wherein R, R1 and R2 are independently selected form the group consisting of: - a hydrogen atom, - a halogen atom, - an alkyl group, linear, cyclic or branched, saturated or unsaturated, possibly substituted, comprising from 1 to 10 carbon atoms, - an acyl group comprising from 1 to 10 carbon atoms, - a carboxyl group, - an amido group comprising from 1 to 10 carbon atoms, and - an imino group, possibly substituted by an alkyl group, linear, cyclic or branched, saturated or unsaturated, and wherein R3, R4, R5 and R6 are independently selected form the group consisting of: - a hydrogen atom, - a halogen atom, - a hydroxyl group, - an alkyl group, linear, cyclic or branched, saturated or unsaturated, possibly substituted, comprising from 1 to 10 carbon atoms, - an alkoxy group comprising from 1 to 10 carbon atoms, - an acyl group comprising from 1 to 10 carbon atoms, - a carbonate group from 1 to 10 carbon atoms, - a carboxyl group, and - a cyano group. |