| Autor: |
Burt SR; Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA., Harper JK; Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA., Cool LG; United States Department of Agriculture, Agricultural Research Service, Albany, CA, USA. |
| Jazyk: |
angličtina |
| Zdroj: |
Natural product research [Nat Prod Res] 2023 Jul; Vol. 37 (13), pp. 2248-2254. Date of Electronic Publication: 2022 Feb 14. |
| DOI: |
10.1080/14786419.2022.2038594 |
| Abstrakt: |
Individuals of Usnea fulvoreagens (Parmeliaceae, lichenised Ascomycota), a shrubby corticolous species that is widespread in Europe, East Asia and North America, produce medullary lichen acids in several distinct chemotypic patterns. One such chemotype reportedly contains an unidentified substance as the major secondary metabolite. We isolated this compound from Californian specimens of U. fulvoreagens and identified it as the rare depsidone neotricone. A co-occurring compound, conneotricone, was identified as 4,10-dihydroxy-5-(hydroxymethyl)-8-methyl-3,7-dioxo-1,3-dihydro-7 H -isobenzofuro[4,5- b ][1,4]benzodioxepine-11-carboxylic acid by NMR and HPLC-UV-MS n comparison with the material synthesised from salazinic acid. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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