Removal of acid-labile protecting or anchoring groups in the presence of polyfluorinated alcohol: Application to solid-phase peptide synthesis
- Authors: Stetsenko D.A.1,2, Apukhtina V.S.1,2, Chelobanov B.P.1,2, Palladino P.3
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Affiliations:
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch
- Novosibirsk State University
- Université degli Studi di Catania
- Issue: Vol 42, No 2 (2016)
- Pages: 143-152
- Section: Article
- URL: https://journals.rcsi.science/1068-1620/article/view/227861
- DOI: https://doi.org/10.1134/S106816201602014X
- ID: 227861
Cite item
Abstract
We describe herein a new method for cleaving from resin and removing acid-labile protecting groups in solid-phase peptide synthesis in the presence of a polyfluorinated alcohol (either trifluoroethanol, TFE, or hexafluoroisopropanol, HFIP). It was shown that 0.1 M HCl in hexafluoroisopropanol or trifluoroethanol removes the acid-labile protecting groups commonly used in Fmoc SPPS for the protection of amino acid side-chains, such as t-butyl ester and ether, Boc, trityl, and Pbf groups including the most acid-resistant p-hydroxymethylphenoxyacetyl group (HMPA), p-benzyloxy benzyl ester (Wang resin), Rink amide, and peptide amide linker (PAL). The addition of 5–10% of a hydrogen-bonding solvent was shown to considerably retard or even fully inhibit the reaction. However, nonhydrogen-bonding solvents, such as dichloromethane, do not slow down the reaction.
About the authors
D. A. Stetsenko
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch; Novosibirsk State University
Author for correspondence.
Email: dast@niboch.nsc.ru
Russian Federation, pr. Lavrent’eva 8, Novosibirsk, 630090; ul. Pirogova 2, Novosibirsk, 630090
V. S. Apukhtina
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch; Novosibirsk State University
Email: dast@niboch.nsc.ru
Russian Federation, pr. Lavrent’eva 8, Novosibirsk, 630090; ul. Pirogova 2, Novosibirsk, 630090
B. P. Chelobanov
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch; Novosibirsk State University
Email: dast@niboch.nsc.ru
Russian Federation, pr. Lavrent’eva 8, Novosibirsk, 630090; ul. Pirogova 2, Novosibirsk, 630090
P. Palladino
Université degli Studi di Catania
Email: dast@niboch.nsc.ru
Italy, Viale Andrea Doria 6, Catania, 95125