Somporn Palasarn, Prattana Tanyapanyachon, Vanicha Vichai, Phongeun Sysouphanthong, Kevin D Hyde, Nattika Saengkrit, Masahiko Isaka
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引用次数: 0
Abstract
Four chromene dimers, panusimilins A-D (1-4) (racemic mixtures), and two previously undescribed chromanes (5a/5b and 6a/6b) were isolated from cultures of basidiomycete Panus similis TBRC-BCC 52578. Interestingly, synthetic compounds closely related to panusimilins A-C (1-3) were previously reported, which were produced by Lewis acid promoted dimerization of a plant-derived chromene, precocene II. In the present study, panusimilins were isolated from the culture broth extract of the fungus P. similis. The chromane monomers were shown to be a non-racemic mixture of enantiomers, and their absolute configurations were elucidated by conversion to Mosher ester derivatives. The isolated compounds were evaluated for their cytotoxic activities. Among them, 2,2-dimethyl-3,4,6-trihydroxychromane (6a/6b) showed selective activity to NCI-H187 cells (IC50 9.1 μM). On the other hand, panusimilin B (2) exhibited antioxidant activity in the DPPH radical scavenging assay (IC50 66 μM).
期刊介绍：
The Journal of Natural Products invites and publishes papers that make substantial and scholarly contributions to the area of natural products research. Contributions may relate to the chemistry and/or biochemistry of naturally occurring compounds or the biology of living systems from which they are obtained.
Specifically, there may be articles that describe secondary metabolites of microorganisms, including antibiotics and mycotoxins; physiologically active compounds from terrestrial and marine plants and animals; biochemical studies, including biosynthesis and microbiological transformations; fermentation and plant tissue culture; the isolation, structure elucidation, and chemical synthesis of novel compounds from nature; and the pharmacology of compounds of natural origin.
When new compounds are reported, manuscripts describing their biological activity are much preferred.
Specifically, there may be articles that describe secondary metabolites of microorganisms, including antibiotics and mycotoxins; physiologically active compounds from terrestrial and marine plants and animals; biochemical studies, including biosynthesis and microbiological transformations; fermentation and plant tissue culture; the isolation, structure elucidation, and chemical synthesis of novel compounds from nature; and the pharmacology of compounds of natural origin.
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