Chemistry: natural resins or derivatives; peptides or proteins; – Peptides of 3 to 100 amino acid residues – 4 to 5 amino acid residues in defined sequence
Reexamination Certificate
2006-03-21
2006-03-21
Campell, Bruce R. (Department: 1654)
Chemistry: natural resins or derivatives; peptides or proteins;
Peptides of 3 to 100 amino acid residues
4 to 5 amino acid residues in defined sequence
C514S007600
Reexamination Certificate
active
07015307
ABSTRACT:
Disclosed are methods of purifying glycopeptides that are substituted with one or more substituents each comprising one or more phosphono groups that are useful as antibacterial agents. The methods include contacting a solution of the glycopeptide derivatives with a polystyrene-containing resin, eluting the resin with an aqueous solution, and isolating the purified glycopeptide derivative.
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Schmidt Donald E.
Sganga Jeanmarie Donovan
Campell Bruce R.
Cohen Joyce G.
Hagenah Jeffrey A.
Saxon Roberta P.
Teller Roy
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