US PATENT SUBCLASS 530 / 342
.~.~.~ Mixed anhydride synthesis

Current as of: June, 1999
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530 /   HD   CHEMISTRY: NATURAL RESINS OR DERIVATIVES; PEPTIDES OR PROTEINS; LIGNINS OR REACTION PRODUCTS THEREOF

300  DF  PEPTIDES OF 3 TO 100 AMINO ACID RESIDUES {29}
333  DF  .~ Synthesis of peptides {4}
338  DF  .~.~ Solution phase synthesis {4}
342.~.~.~ Mixed anhydride synthesis

DEFINITION

Classification: 530/342

Mixed anhydride synthesis:

(under subclass 338) Processes in which the synthesis includes (1) forming a mixed anhydride by reacting an alpha-acylamino acid or an alpha-acylamino peptide with a lower alkyl chloroformate in the presence of a tertiary amino base, and then (2) reacting the resulting free amino group or a peptide derivative having a free amino group, to form a peptide.