| Literature DB >> 21632082 |
Mark W Sumarah1, Julie R Kesting, Dan Sørensen, J David Miller.
Abstract
The extracts of five foliar fungal endophytes isolated from Pinus strobus (eastern white pine) that showed antifungal activity in disc diffusion assays were selected for further study. From these strains, the aliphatic polyketide compound 1 and three related sesquiterpenes 2-4 were isolated and characterized. Compound 2 is reported for the first time as a natural product and the E/Z conformational isomers 3 and 4 were hitherto unknown. Additionally, the three known macrolides; pyrenophorol (5), dihydropyrenophorin (6), and pyrenophorin (7) were isolated and identified. Their structures were elucidated by spectroscopic analyses including 2D NMR, HRMS and by comparison to literature data where available. The isolated compounds 1, 2, and 5 were antifungal against both the rust Microbotryum violaceum and Saccharomyces cerevisae.Entities:
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Year: 2011 PMID： 21632082 DOI： 10.1016/j.phytochem.2011.05.003
Source DB: PubMed Journal: Phytochemistry ISSN： 0031-9422 Impact factor: 4.072