Chemistry: natural resins or derivatives; peptides or proteins; – Peptides of 3 to 100 amino acid residues – Peptides containing saccharide radicals – e.g. – bleomycins – etc.
Reexamination Certificate
2004-09-03
2009-12-22
Tsang, Cecilia (Department: 1654)
Chemistry: natural resins or derivatives; peptides or proteins;
Peptides of 3 to 100 amino acid residues
Peptides containing saccharide radicals, e.g., bleomycins, etc.
C514S002600, C514S008100, C514S023000, C514S025000
Reexamination Certificate
active
07635750
ABSTRACT:
The present invention provides a method for preparing polyfunctionalized peptides and/or proteins at non-adjacent designated sites via native chemical ligation. In certain embodiments, the inventive method is a method for preparing a polyfunctionalized peptide comprising a peptidic backbone made up of four or more amino acids, wherein two or more non-adjacent amino acids are independently subsituted with a moiety having the structure: wherein A and L1are as defined herein. In certain other embodiments, the inventive method allows the preparation of polyfunctionalized peptides having the general structure: wherein A, RP0, RP1, PX1, RX2, L1, to, s, t and q are as defined herein.
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Danishefsky Samuel J.
Warren J. David
Choate Hall & Stewart LLP
Ha Julie
Herschbach Jarrell Brenda
Rearick John P.
Sloan-Kettering Institute For Cancer Research
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