The present invention relates to compounds of the following general formula (I): wherein: R1 is notably a group &mdashNRaRb, Ra and Rb forming together with the nitrogen atom onto which they are bound, a heterocycle comprising from 5 to 30 atoms, R2 is notably an aryl comprising from 5 to 30 atoms, and R3 is notably an alkenyl comprising from 1 to 20 carbon atoms.