Patent ID: 7956032

Claim:
A Granulocyte Colony Stimulating Factor peptide conjugate comprising a glycosyl linking group attached to an amino acid residue of said peptide, said glycosyl linking group comprising a modified sialyl residue having the formula: wherein R 2 is H, CH 2 OR 7 , COOR 7 , COO − or OR 7 wherein R 7 represents H, substituted or unsubstituted alkyl or substituted or unsubstituted heteroalkyl; R 3 and R 4 are members independently selected from H, substituted or unsubstituted alkyl, OR 8 , NHC(O)R 9 wherein R 8 and R 9 are independently selected from H, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl or sialic acid; s is an integer from 1 to 20; f is an integer from 1 to 2500; and Q is a member selected from H and substituted or unsubstituted C 1 -C 6 alkyl.