New chromonocoumarin (=6H, 7H-[1]Benzopyrano[4,3-b][1]benzopyran-6,7-dione) derivatives fromPolygala fruticosa BERG

Details

Serval ID
serval:BIB_345F6FE50DF0
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
New chromonocoumarin (=6H, 7H-[1]Benzopyrano[4,3-b][1]benzopyran-6,7-dione) derivatives fromPolygala fruticosa BERG
Journal
Helvetica Chimica Acta
Author(s)
Di Paolo Ermindo R., Hamburger Matthias O., Stoeckli-Evans Helen, Rogers Colin, Hostettmann Kurt
ISSN
0018-019X
ISSN-L
1522-2675
Publication state
Published
Issued date
01/11/1989
Peer-reviewed
Oui
Volume
72
Number
7
Pages
1455-1462
Language
english
Abstract
Three chromonocoumarins ( =6H, 7H-[1]benzopyrano[4,3-b][1]benzopyran-6,7-diones) 1–3 have been isolated from the leaves and the root bark of polygala fruticosa BERG. (syn. Polygala oppositifoliaL.; Polygalaceae). The structure of frutinone A (1) was established by X-ray diffraction analysis. The structures of the previously undescribed compounds frutinone B (2) and C (3) were deduced by spectroscopic methods (EI-MS, UV, IR, 1H-and 13C-NMR, including NOE and COSY) in comparison with 1. Chromonocoumarins 1–3 are the first representatives of a new type of naturally occurring compounds. Frutinone A shows strong fungicidal activity against Cladosporium cucumerinum.
Keywords
Physical and Theoretical Chemistry, Inorganic Chemistry, Organic Chemistry, Biochemistry, Drug Discovery, Catalysis
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04/08/2017 16:29
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20/08/2019 13:21
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