| Literature DB >> 18510362 |
Wen Zhang1, Karsten Krohn, Siegfried Draeger, Barbara Schulz.
Abstract
Three new isocoumarin derivatives ( 2- 4) were isolated together with monocerin ( 1) from Microdochium bolleyi, an endophytic fungus from Fagonia cretica, a herbaceous plant of the semiarid coastal regions of Gomera. Compounds 2 and 3 are both 12-oxo epimers of 1, and 4 is a ring-opened derivative of 1. The structures were elucidated by detailed spectroscopic analysis and comparison with reported data. The absolute configurations were determined by a modified Mosher's method. Compounds 1, 3, and 4 showed good antifungal, antibacterial, and antialgal activities against Microbotryum violaceum, Escherichia coli, Bacillus megaterium, and Chlorella fusca. Compound 2 was moderately antifungal and antialgal.Entities:
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Year: 2008 PMID: 18510362 DOI: 10.1021/np800095g
Source DB: PubMed Journal: J Nat Prod ISSN: 0163-3864 Impact factor: 4.050