Malvone A, a phytoalexin found in Malva sylvestris (family Malvaceae).
نویسندگان
چکیده
The isolation and structure of a phytoalexin, malvone A (2-methyl-3-methoxy-5,6-dihydroxy-1,4-naphthoquinone) is reported. Malvone A formation is induced in Malva sylvestris L. by the plant pathogen Verticillium dahliae. In a turbimetric assay for toxicity to V. dahliae, it had an ED50 value of 24 microg/ml. The structure of malvone A was determined by MS and NMR spectroscopy, and by X-ray crystallographic analysis. The X-ray analysis showed water molecules were located in channels that run along the a-axis.
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ورودعنوان ژورنال:
- Phytochemistry
دوره 67 21 شماره
صفحات -
تاریخ انتشار 2006