Chemistry: natural resins or derivatives; peptides or proteins; – Peptides of 3 to 100 amino acid residues – Synthesis of peptides
Reexamination Certificate
2007-03-28
2011-11-15
Russel, Jeffrey E (Department: 1654)
Chemistry: natural resins or derivatives; peptides or proteins;
Peptides of 3 to 100 amino acid residues
Synthesis of peptides
C530S345000
Reexamination Certificate
active
08058394
ABSTRACT:
The present invention provides a process for producing a peptide thioester compound. The process involves: (A) forming a peptide by a solid-phase synthesis method using a resin modified with a linker represented by the formula (1) as a solid phase:wherein R1represents C1-4alkyl group, R2represents hydrogen atom or C1-4alkoxy group, and n represents an integer of 1 to 4; (B) cleaving a bond between the solid phase and the peptide with at least one acid selected from dilute hydrochloric acid, dilute sulfuric acid, formic acid, and acetic acid to produce a peptide having a carboxyl group at the C-terminus; and (C) reacting a thiol compound with the peptide at −100 to 0° C. in the presence of a condensing agent in a solvent.
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Asai Hiroaki
Fukae Kazuhiro
Kajihara Yasuhiro
Nambu Yuri
Yamamoto Naoki
Brinks Hofer Gilson & Lione
Otsuka Chemical Co. Ltd.
Russel Jeffrey E
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