The present invention relates to the use, in a cosmetic, dermatological or pharmaceutical composition, of at least one compound of formula (I):in which:R2 represents a hydrogen atom or a methyl or ethyl radical；R3 represents a linear C1-C12 alkyl radical, optionally substituted with a hydroxyl group； or a linear C2-C12 alkenyl radical, optionally substituted with a hydroxyl group；as a preserving agent.The invention also relates to certain novel compounds and to the cosmetic, dermatological or pharmaceutical compositions comprising them.
