Abstract: The present invention relates to a compound of general formula (I) below in which R1, R2 and R3 represent, independently of one another, a hydrogen atom or a C1-C6 alkyl group or a (C1-C6 alkyl)carbonyl group, R4, R5, R6 and R7 represent a hydrogen or a C1-C6 alkyl group, a C1-C6 alkoxy group or a (C1-C6 alkyl)carbonyloxy group, and n is an integer between 8 and 20, or its pharmaceutically acceptable addition salts, isomers, enantiomers and diastereoisomers, and also mixtures thereof. The invention also relates to a pharmaceutical composition comprising the compound and to the use thereof as a neurotrophic agent.