598863 Disclosed is the use of compounds of formula (I) in the manufacture of a medicament for treating a diseases or condition associated with endothelial dysfunction selected from diabetes, atherosclerosis, sickle cell disease, cutaneous T-cell lymphoma, and a disease involving inflammatory cells in the skin selected from dermatitis, psoriasis, and chronic eczema. Example of compounds of formula (I) include: { (1R,2R,3S,5R)-2-[(deoxy-alpha-L-galactopyranosyl)oxy]-3,5-dimethylcyclohex-1-yl} -2-O-benzoyl-3-O-[(1S)-1-carboxy-2- cyclohexyl-ethyl]-beta-D-galactopyranoside sodium salt.