Synthesis of glyceryl glycosides related to A-type prymnesin toxins

Hems, Edward S., Nepogodiev, Sergey A., Rejzek, Martin and Field, Robert A. ORCID: https://orcid.org/0000-0001-8574-0275 (2018) Synthesis of glyceryl glycosides related to A-type prymnesin toxins. Carbohydrate Research, 463. pp. 14-23. ISSN 0008-6215

Full text not available from this repository. (Request a copy)

Abstract

A suite of glycosylated glycerol derivatives representing various fragments of the glycosylated ichthyotoxins called prymnesins were chemically synthesised. Glycerol was used to represent a small fragment of the prymnesin backbone, and was glycosylated at the 2° position with the sugars currently reported to be present on prymnesin toxins. Neighbouring group participation was utilised to synthesise 1,2-trans-glycosides. SnCl2-promoted glycosylation with furanosyl fluorides gave 1,2-cis-furanosides with moderate stereocontrol, whilst TMSOTf promoted glycosylation with a furanosyl imidate gave a 1,2-cis-furanoside with good stereocontrol. The chemical synthesis of two larger glyceryl diglycoside fragments of prymnesin-1, glycosylated with α-ʟ-arabinopyranose and α-ᴅ-ribofuranose, is also described. As the stereochemistry of the prymnesin backbones at this region is undefined, both the 2R- and 2S- glycerol isomers were synthesised. The separated diastereoisomers were distinguished by comparing NOESY NMR with computational models.

Item Type: Article
Additional Information: Funding Information: These studies were supported in the UK by BBSRC Institute Strategic Programme on Understanding and Exploiting Metabolism [BB/J004561/1] and the John Innes Foundation. We thank Gerhard Saalbach for his assistance with recording HRMS spectra. MarvinSketch was used for displaying lowest energy calculation 3D models, and Calculator Plugins were used for structure property prediction and calculation. Marvin 15.1.19.0, 2015, ChemAxon (http://www.chemaxon.com). Publisher Copyright: © 2018 The Authors
Uncontrolled Keywords: algae,glyceryl glycosides,prymnesins,prymnesium parvum,toxins,analytical chemistry,biochemistry,organic chemistry ,/dk/atira/pure/subjectarea/asjc/1600/1602
Faculty \ School:
Faculty of Science > School of Chemistry, Pharmacy and Pharmacology
Related URLs:
Depositing User: LivePure Connector
Date Deposited: 04 Sep 2024 08:33
Last Modified: 25 Sep 2024 18:06
URI: https://ueaeprints.uea.ac.uk/id/eprint/96504
DOI: 10.1016/j.carres.2018.04.008

Actions (login required)

View Item View Item