Patent ID: 7390916

Claim:
Compound of formula (2) in which X 2 represents a divalent radical of formula —(C═O)—R′ 3 —(C═O)—, —SO 2 —R′ 3 —SO 2 — or —(C═O)—O—R′ 3 —O—(C═O)—, Y represents a radical —(C═O)—R 4 or —SO 2 R 5 , R 2 represents a linear or branched C 1-8 alkyl group, n is 0, 1 or 2, R′ 3 represents a single bond or a linear or branched divalent C 1-30 alkylene or C 3-30 alkenylene radical, possibly bearing one or more hydroxyl substituents and possibly containing, in the carbon chain, one or more hetero atoms chosen from oxygen, nitrogen and silicon atoms, R 4 represents a radical —OR 6 or —NHR 6 , R 5 represents a linear or branched C 1-30 alkyl radical or a phenyl nucleus that is unsubstituted or substituted with C 1-4 alkyl or alkoxy radicals, R 6 represents a linear or branched C 1-30 alkyl or C 3-30 alkenyl radical, possibly bearing one or more hydroxyl substituents and possibly containing, in the carbon chain, one or more hetero atoms chosen from oxygen, nitrogen and silicon atoms.