Abstract: A compound of formula corresponding to either formula (Ia) or (Ib): wherein: M represents a molecule that can be used for the treatment or diagnosis of pathologies caused by attack on the cartilage, R1, R2 and R3 represent alkyl, or R1, R2 and R3 together with the nitrogen atom carrying them, form a heterocycle, X represents a (C1–C6)alkylene chain in which one or more —CH2— groups are optionally replaced by sulphur, oxygen, or —NR—, —CO—, —CO—NH—, —CO2—, —SO— or —SO2—, n represents 0 or 1, Hal represents halogen, or, R4 represents alkyl, Hal represents halogen, represents a molecule that can be used for the treatment or diagnosis of pathologies caused by attack on the cartilage, wherein the nitrogen atom may optionally be included in a saturated or unsaturated nitrogen-containing heterocyclic system, or included in a double bond.

Abstract: A compound of formula corresponding to either formula (Ia) or (Ib): 1

Abstract: Compounds of formula corresponding to either formula (Ia) or (Ib): wherein: M represents a molecule that can be used for the treatment or diagnosis of pathologies caused by attack on the cartilage, R1, R2 and R3 represent an alkyl group, or R1, R2 and R3, together with the nitrogen atom carrying them, form a heterocycle, X represents a (C1-C6)alkylene chain in which one or more —CH2— groups are optionally replaced by a sulphur atom, an oxygen atom, or an —NR—, —CO—, —CO—NH—, —CO2—, —SO— or —SO2— group, n represents 0 or 1, Hal represents a halogen atom, or, R4 represents an alkyl group, Hal represents a halogen atom, represents a molecule that can be used for the treatment or diagnosis of pathologies caused by attack on the cartilage, wherein the nitrogen atom may optionally be included in a saturated or unsaturated nitrogen-containing heterocyclic system, or i

Abstract: 1 wherein: represents a single or double bond, R1 represents a hydrogen atom or a hydroxy, alkoxy, acyloxy, alkylsulphonyloxy, arylsulphonyloxy or arylalkoxy group, R2 represents a hydrogen atom or an alkyl group, R3 and R4, which may be identical or different, each represent a hydrogen atom, a halogen atom or an alkyl, hydroxy or alkoxy group, Ak represents an alkylene chain, R5, R6 and R7, which may be identical or different, each represent an alkyl group, or R5, R6 and R7, taken together with the nitrogen atom carrying them, form a saturated or unsaturated nitrogen-containing heterocycle,