Quaternary ammonium compounds

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.

Dependencies are inferred from the claim text.