The present invention relates to a compound of the following formula (I): in which at least one and only one group chosen among R5, R6 and R7 is a group of the following formula: The present invention relates also to uses thereof for preservation and/or protection and/or regeneration of biological materials and or microorganisms and for cosmetic or dermato logical applications such as anti-aging, skin protection and skin regeneration； to culture, storage and/or preservation media comprising such a compound； to cosmetic or dermato logical compositions comprising such a compound； to processes for preparing such a compound； and to synthesis intermediates.
