Recently, we reported the X-ray structural analysis1} of deacetyldihydrobotrydial as a plant growth regulator1)2) produced by Botrytis squamosa. In the course of further studies on the metabolites of this fungus, we isolated two new compounds (1 and 2) named O-methyldihydrobotrydial and deacetyl-O-methyldihydrobotrydialone, respectively. In this paper, we report the isolation, structural elucidation and biological activities of these two compounds.
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