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Stereochemical Definition of the Natural Product (6R,10R,13R, 14R,16R,17R,19S,20S,21R,24S,25S,28S,30S,32R,33R,34R,36S,37S,39R)-Azaspiracid-3 by Total Synthesis and Comparative Analyses.

Authors :
Kenton NT
Adu-Ampratwum D
Okumu AA
McCarron P
Kilcoyne J
Rise F
Wilkins AL
Miles CO
Forsyth CJ
Source :
Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2018 Jan 15; Vol. 57 (3), pp. 810-813. Date of Electronic Publication: 2017 Dec 15.
Publication Year :
2018

Abstract

The previously accepted structure of the marine toxin azaspiracid-3 is revised based upon an original convergent and stereoselective total synthesis of the natural product. The development of a structural revision hypothesis, its testing, and corroboration are reported. Synthetic (6R,10R,13R,14R,16R,17R,19S,20S,21R,24S,25S,28S,30S,32R, 33R,34R,36S,37S,39R)-azaspiracid-3 chromatographically and spectroscopically matched naturally occurring azaspiracid-3, whereas the previously assigned 20R epimer did not.<br /> (© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Details

Language :
English
ISSN :
1521-3773
Volume :
57
Issue :
3
Database :
MEDLINE
Journal :
Angewandte Chemie (International ed. in English)
Publication Type :
Academic Journal
Accession number :
29193497
Full Text :
https://doi.org/10.1002/anie.201711008