R-Hexitronic acid, a new tetronic acid derivative isolated from a soil fungus FG9RK

Autor: Zhen Liu, Festus B. C. Okoye, Charles O. Esimone, Kenneth G. Ngwoke, Dina H. El-Kashef, Peter Proksch, Elena Ancheeva, Georgios Daletos
Rok vydání: 2020
Předmět:
Zdroj: Natural Product Research. 35:3578-3583
ISSN: 1478-6427
1478-6419
DOI: 10.1080/14786419.2020.1715400
Popis: A new tetronic acid derivative (1) together with terrestric acid (2), a known metabolite of Penicillium species, was isolated from the soil fungus, FG9RK following fermentation on solid rice medium. The structure of 1 was elucidated by one- and two-dimensional NMR and MS measurements. The absolute configuration of the oxygenated carbon in the side chain of 1 was identified as S by converting the compound into its Mosher ester whereas the absolute configuration of the lactone ring was deduced based on biogenetic considerations and comparison with 2.
Databáze: OpenAIRE