Process for the synthesis of cyclic heptapeptide
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United States of America Patent
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Sep 9, 2014
Grant Date -
May 19, 2011
app pub date -
Jan 17, 2011
filing date -
Jun 14, 2004
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Abstract
The present invention relates to an improved process for the large scale synthesis of cyclic heptapeptide using Fmoc solid phase synthesis technique. The described process assembles the peptide on a solid support resin by coupling to one another by peptide bonds to obtain a peptide wherein the coupling of cysteine to the resin employs a combination of solvents to reduce cysteine racemization. The process described relates to the use of C1-C4 alcohols as total substitute to organic nitriles thus making the process cost effective, non-toxic and eco-friendly.
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