Patent ID: 7259271
Filing Date: 2007-08-21
Classification: A61P,C07D,Y02P

Abstract:
1. A compound of Formula III where n signifies 2, R 4 signifies hydrogen, an alkyl group or an alkylaryl group; R 5 signifies a hydroxyl protecting group and R 6 signifies an amino protecting group, wherein the hydroxyl protecting group is an organosilyl group; and the amino protecting group is an alkyl carbamate group or alkylaryl carbamate group, and wherein the term alkyl means a hydrocarbon chain, straight or branched, containing from one to six carbon atoms, optionally substituted by one or more aryl groups, alkoxy groups, halogens, alkoxycarbonyl groups or hydroxycarbonyl groups; the term aryl means a phenyl or naphthyl group, optionally substituted by an alkyloxy group, halogen or nitro group; and the term halogen means fluorine, chlorine, bromine or iodine.