Processes for coupling amino acids using bis-(trichloromethyl) carbonate
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United States of America Patent
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May 16, 2006
Grant Date -
Oct 16, 2003
app pub date -
Dec 18, 2002
filing date -
Jul 12, 1998
priority date (Note) -
Expired
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Abstract
A process is disclosed for using bis-(trichloromethyl)carbonate (triphosgene), diphosgene or phosgene as efficient and effective coupling reagents during coupling of carbohydrates to peptide chains. This process is particularly useful for the coupling to sterically hindered amino acid residues, or for other difficult couplings. The reagents can be used for the derivatization of peptides by formation of a bond between a free amine on a peptide and a carbohydrate.
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