The present invention relates to oxygenated amino or ammonium-containing sulfonic acid, phosphoric acid and carboxylic acid derivatives, in particular the compounds of formula 1, 2, 3, 4, 5 or 6, and their medical use, including their use in the treatment, prevention or amelioration of an inflammatory, autoimmune and/or allergic disorder, or a proliferative, neoplastic or dys-plastic disease or disorder.