Stereocontrolled Debenzylative Cycloetherification Reaction as a Route to Enantiopure C‑Furanosides with Amino Substituents in the Side Chain

A highly efficient methodology of the preparation of synthetically important tetrahydrofuran derivatives with an amino substituent in the side chain is reported. This process is based on the stereocontrolled debenzylative cycloetherification (DBCE) reaction applied for chirons from the d-gluco- and...

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Bibliographic Details
Published in:Journal of organic chemistry 2020-03, Vol.85 (5), p.3517-3526
Main Authors: Tiara, Karolina, Potopnyk, Mykhaylo A, Świder, Paweł, Jarosz, Sławomir
Format: Article
Language:English
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Summary:A highly efficient methodology of the preparation of synthetically important tetrahydrofuran derivatives with an amino substituent in the side chain is reported. This process is based on the stereocontrolled debenzylative cycloetherification (DBCE) reaction applied for chirons from the d-gluco- and d-manno-series and provides derivatives with new stereogenic centers. The influence of the electron-withdrawing group (EWG), present in the acyclic substrates with the mesyl leaving group, on the reactivity in the DBCE reaction was investigated both “in the flask” and by density functional theory (DFT) calculations. It was demonstrated that tetrahydrofuran derivatives with the benzoxime group (EWG = CHNOBn) are very good candidates for the subsequent highly stereoselective Grignard reaction.
ISSN:0022-3263
1520-6904
DOI:10.1021/acs.joc.9b03247