Structure Elucidation of the spiro-Polyketide Svalbardine B from the Arctic Fungal Endophyte Poaceicola sp. E1PB with Support from Extensive ESI-MSn Interpretation.
J Nat Prod
; 83(12): 3493-3501, 2020 12 24.
Article
in English
| MEDLINE | ID: covidwho-1351918
ABSTRACT
Svalbardines A and B (1 and 2) and annularin K (3) were isolated from cultures of Poaceicola sp. E1PB, an endophyte isolated from the petals of Papaver dahlianum from Svalbard, Norway. Svalbardine A (1) is a pyrano[3,2-c]chromen-4-one, a new analogue of citromycetin. Svalbardine B (2) displays an unprecedented carbon skeleton based on a 5'-benzyl-spiro[chroman-3,7'-isochromene]-4,8'-dione core. Annularin K (3) is a hydroxylated derivative of annularin D. The structure of these new polyketides, along with those of known compounds 4-6, was established by spectrometric analysis, including extensive ESI-CID-MSn processing in the case of svalbardine B (2).
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Ascomycota
/
Spectrometry, Mass, Electrospray Ionization
Language:
English
Journal:
J Nat Prod
Year:
2020
Document Type:
Article
Affiliation country:
Acs.jnatprod.9b01105
Similar
MEDLINE
...
LILACS
LIS