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Peptidyl-tRNA. IX. The use of o-nitrophenylsulfenyl group as N-protecting group in the synthesis of peptidyl-tRNA

✍ Scribed by Y. Lapidot; D. Elat; S. Rappoport; N. de Groot

Book ID
111655332
Publisher
Elsevier Science
Year
1970
Tongue
English
Weight
233 KB
Volume
38
Category
Article
ISSN
0006-291X

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## Abstract __N__‐protected peptides, which are important intermediates as a carboxyl component in the fragment condensation method, have been prepared in high yields by the reaction of __o__‐nitrophenylsulfenyl (Nps) __N__‐carboxy α‐amino acid anhydrides with unprotected peptides and amino acids i

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## Abstract 2‐Thiopyridone (2‐mercaptopyridine, **1**) was found to be a very suitable reagent for removing the __N__^α^‐o‐nitrophenylsulfenyl (NPS‐) group in both conventional and solid‐support peptide synthesis. A 3‐ to 5‐molar excess of the reagent together with an equivalent amount of glacial a