Disclosed is a compound of formula I e.g. 4-((R)-2-{ [6-((S)-3-methoxy-pyrrolidin-1-yl)-2-phenyl-pyrimidine-4-carbonyl]-amino} -3-phosphono-propionyl)-piperazine-1-carboxylic acid ethyl ester wherein the variables are defined in the specification for the treatment of occlusive vascular disorders.