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An alternative approach to the synthesis of the three fragments of anachelin H

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Abstract

The synthesis of the fully protected peptide, polyketide and alkaloid fragments of anachelin H is presented. The peptide fragment was prepared using a liquid phase peptide synthesis; the polyketide fragment was synthetized using a cross metathesis and an intramolecular oxa-Michael reaction as the key steps to introduce the desired stereochemistry; finally, the alkaloid fragment was obtained by an oxidative cyclization of a catechol derivative using potassium ferricyanide. The synthesis of all fragments was based on the use of natural amino acids as sources of asymmetry. The independent synthesis of the three fragments should allow more efficient biological studies on the fragments instead of the whole natural product. Experiments to illustrate the coupling of fragments and the effectiveness of the convergent strategy are also described.

Graphical abstract: An alternative approach to the synthesis of the three fragments of anachelin H

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Article information


Submitted
12 Feb 2020
Accepted
18 Mar 2020
First published
18 Mar 2020

Org. Biomol. Chem., 2020, Advance Article
Article type
Paper

An alternative approach to the synthesis of the three fragments of anachelin H

F. Garzón-Posse, J. Prunet and D. Gamba-Sánchez, Org. Biomol. Chem., 2020, Advance Article , DOI: 10.1039/D0OB00315H

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