Abstract: Techniques to glycosylation are described, and more particularly to the production of glycosylation structures that are resistant to enzymatic degradation, thereby modulating one or more of their biological properties or those of therapeutic moieties incorporating them, and in particular to reacting activated carbohydrate substrates containing fluorine, such as 3-fluoro sialic acid compounds, with sugar acceptors to produce covalent conjugates of the sugar acceptor and one or more of the sialic acid compounds.

Abstract: Reagents and methods for functionalizing polypeptides with moieties (alkylene glycol) molecules and glycan groups are disclosed that are based on a functionalizing reagent which comprises a nitrogen containing heterocyclic aromatic ring having a vinyl substituent that is capable of reacting with one or more thiol groups that are naturally present, or have been introduced into, the polypeptide, for example by employing a thiol group of one or more cysteine residues. The functionalizing reagent is covalently linked to a poly(alkylene glycol) molecule, such as a polyethylene glycol (PEG) molecule, or a glycan group so that the reaction between the vinyl group and the thiol group in the polypeptide covalently links the polypeptide to the poly(alkylene glycol) molecule and/or the glycan group.

Abstract: Reagents and methods for functionalizing polypeptides with moieties (alkylene glycol) molecules and glycan groups are disclosed that are based on a functionalizing reagent which comprises a nitrogen containing heterocyclic aromatic ring having a vinyl substituent that is capable of reacting with one or more thiol groups that are naturally present, or have been introduced into, the polypeptide, for example by employing a thiol group of one or more cysteine residues. The functionalizing reagent is covalently linked to a poly(alkylene glycol) molecule, such as a polyethylene glycol (PEG) molecule, or a glycan group so that the reaction between the vinyl group and the thiol group in the polypeptide covalently links the polypeptide to the poly(alkylene glycol) molecule and/or the glycan group.

Abstract: Reagents and methods for functionalizing polypeptides with moieties poly (alkylene glycol) molecules and glycan groups are disclosed that are based on a functionalizing reagent which comprises a nitrogen containing heterocyclic aromatic ring having a vinyl substituent that is capable of reacting with one or more thiol groups that are naturally present, or have been introduced into, the polypeptide, for example by employing a thiol group of one or more cysteine residues. The functionalizing reagent is covalently linked to a poly (alkylene glycol) molecule, such as a polyethylene glycol (PEG) molecule, or a glycan group so that the reaction between the vinyl group and the thiol group in the polypeptide covalently links the polypeptide to the poly (alkylene glycol) molecule and/or the glycan group.

Abstract: Techniques to glycosylation are described, and more particularly to the production of glycosylation structures that are resistant to enzymatic degradation, thereby modulating one or more of their biological properties or those of therapeutic moieties incorporating them, and in particular to reacting activated carbohydrate substrates containing fluorine, such as 3-fluoro sialic acid compounds, with sugar acceptors to produce covalent conjugates of the sugar acceptor and one or more of the sialic acid compounds.