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Peptide Synthesis from N-Carboxy-α-amino Acid Anhydrides in Water. Aminoacylpenicillanic Acids

✍ Scribed by Grant, Norman H.; Alburn, Harvey E.

Book ID
126182853
Publisher
American Chemical Society
Year
1964
Tongue
English
Weight
496 KB
Volume
86
Category
Article
ISSN
0002-7863

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Stepwise synthesis of oligopeptides with
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## Abstract Oligopeptides were synthesized in high yields by the controlled coupling reaction of __N__‐carboxy α‐amino acid anhydrides (NCA's) with amino acid and peptide sodium salts in the heterogeneous reaction medium of acetonitrile–water which contained sodium carbonate. In this solvent, it co

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The polymerization of -y-benzyl+glutamate NCA initiated by n-hexylamine in DMF proceeds with two successive propagation r a h whose ratio is about 1.5. The onset of the increase in rate of propagation occurred a t a DP, of 7-14, which waa independent of initiator to anhydride ratio and anhydride con