Method for preparing polyfunctionalized peptides and/or...

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

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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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