Novel peroxide derivatives, their process of preparation and their use in human medicine and in cosmetics for the treatment or prevention of acne

A compound of following general formula (I):

• in which:
• R1 represents a lower alkyl, a higher alkyl, a cycloalkyl, a cycloalkylalkyl, a lower alkoxy, a higher alkoxy, a cycloalkyloxy, a cycloalkylalkoxy, an aryl, an aryloxy or a mono- or dialkylamino;
• A represents a hydrogen or the following sequence:
• R2 represents a lower alkoxy, a higher alkoxy, a cycloalkyloxy, a cycloalkylalkoxy, an aryloxy or a mono- or dialkylamino.