Phenylbenzofuran-type stilbenoids from Stemona species

Autor:	Lothar Brecker, Andrea Zraunig, Harald Greger, Thomas Pacher
Rok vydání:	2014
Předmět:	Stemona biology Stereochemistry Pinosylvin Aromaticity Plant Science biology.organism_classification Mass spectrometry Biochemistry Hydroxylation chemistry.chemical_compound 13c nmr spectroscopy chemistry Proton NMR Agronomy and Crop Science Biotechnology
Zdroj:	Phytochemistry Letters. 9:33-36
ISSN:	1874-3900
DOI:	10.1016/j.phytol.2014.04.007
Popis:	Five new phenylbenzofuran-type stilbenoids, stemofurans S-W (1–5), were isolated from underground parts of four Stemona species collected in Thailand and Australia together with the known stemofurans A–C, G, E, J, M, the stilbostemins A–D, F, the stemanthrenes A–D, dihydropinosylvin, pinosylvin, and 4′-methylpinosylvin. The chemical structures of the new compounds were elucidated by 1H NMR and 13C NMR spectroscopy and mass spectrometry. In accordance with previous reports all compounds were characterized by C-methylations of the aromatic rings. Stemofurans S (1) and U (3) showed an unusual hydroxylation at position C-4′, a hitherto unknown substitution of Stemona stilbenoids.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::55c908ad432f0274705492880b94eb2c https://doi.org/10.1016/j.phytol.2014.04.007 Zobrazit plný text záznamu Full Text from ScienceDirect