The invention concerns the use of a compound of general formula underneath wherein R0 represents in particular a hydrogen atom or an alkyl group; R1 represents in particular a hydrogen atom or an alkyl group; R2, R3 and R4 represent in particular, independently of one another, a hydrogen atom, a hydroxyl group, an alkoxy group or an acyloxy group, for preparing a medicine for treating lysosomal diseases related to a dysfunction of at least one lysosomal glycosidase enzyme.