A convenient and rapid method for the selective oxygen-17 enrichment of aspartyl peptides during solid-phase synthesis

 
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2001 (EN)
A convenient and rapid method for the selective oxygen-17 enrichment of aspartyl peptides during solid-phase synthesis (EN)

Theodorou-Kassioumis, V. (EN)

Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας (EL)
Theodorou-Kassioumis, V. (EN)

In this work we describe, for the first time, a rapid and efficient method for O-17 selective labeling on the beta -carboxyl group of an aspartic acid residue already incorporated into a peptide sequence anchored on a solid-phase support. The beta -O-benzyl ester of the Asp residue of the Ac-RGD-benzydrylamine resin was successfully saponified using (NaOH)-O-17 in a methanol/ dichloromethane mixture. The O-17 selective enriched peptide was then released from the solid support by acidic cleavage. The O-17 NMR spectrum confirmed the O-17 labeling of the Asp beta -carboxylate. (C) 2001 Elsevier Science Ltd. All rights reserved. (EN)

isotopic enrichment (EN)

Πανεπιστήμιο Ιωαννίνων (EL)
University of Ioannina (EN)

Tetrahedron Lett (EN)

2001

<Go to ISI>://000171556600042

Elsevier (EN)



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