Patent ID: 7790916

Claim:
A pharmaceutical preparation comprising an oligomer of formula (I) wherein n is 2 or 3, R 1 is hydroxyl, R 2 is an alcohol radical (—OR 5 ), and R 5 is a C 1-24 alkyl radical, with the proviso that when n is 2, R 5 is not methyl; or n is 3, R 1 is hydroxyl, R 2 is an amine radical (—NR 3 R 4 ) wherein R 3 and R 4 are the same or different and are independently chosen from hydrogen, C 1-24 alkyl radicals, a phenyl radical and C 6-10 aralkyl radicals; or n is 2 or 3, R 1 is an alcohol radical (—OR 5 ), R 5 is a C 1-24 alkyl radical, and R 2 is an amine radical (—NR 3 R 4 ) wherein R 3 and R 4 are the same or different and are independently chosen from hydrogen, C 1-24 alkyl radicals, a phenyl radical and C 6-10 aralkyl radicals, or n is 2 or 3, R 1 and R 2 are independently chosen from alcohol radicals (—OR 5 ), wherein R 5 is a C 1-24 alkyl radical and wherein R 1 and R 2 are different and at least one excipient.