Volume 39, Issue 7 pp. 1861-1866
Concise Report

Preparation of Peptide Selenoesters from Their Corresponding Acyl Hydrazides

Yunxue Li

Yunxue Li

Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240 China

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Jiazhi Liu

Jiazhi Liu

Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240 China

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Qingqing Zhou

Qingqing Zhou

Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240 China

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Jie Zhao

Jie Zhao

Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240 China

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Ping Wang

Corresponding Author

Ping Wang

Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240 China

E-mail: [email protected]Search for more papers by this author
First published: 28 February 2021
Citations: 15

Dedicated to the Special Issue of Xplorer Prize in 2020.

Main observation and conclusion

Selenoesters are useful substitutes for traditional thioesters in protein ligation chemistry due to their high reactivity in the trans-thio/selenoesterification reaction. However, existing synthetic routes to access peptide selenoester require a selenoesterification reaction between a selenide and a protected peptide with a free carboxylate at the C-terminus. Herein, we introduce an efficient method to convert peptide acyl hydrazide, a convenient thioester surrogate, into the desired selenoester for peptide ligation. Our methodology can be applied to fully de-protected peptides with various C-terminal amino acid residues in high yield without racemization. We believe that this method provides a useful alternative to access peptide C-terminal selenoesters for protein ligation.image

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