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Five new sesquiterpenoid metabolites, botryendial, botryenalol, 10-epi-dihydrobotrydial, methyl acetyl botryenaloate and 10-dehydroxy dihydrobotrydialone, have been isolated from Botrytis cinerea. The structures were elucidated by extensive NMR studies of the natural products and their derivatives.
Four new metabolites, 10-oxo-dihydrobotrydial, 4β-acetoxy-9β-10β-15α-trihydroxyprobotrydial, β-O-methyldihydrobotrydialone and α-O-methyldihydrobotrydialone, were isolated from a shake culture of Botrytis cenerea. The second compound, a tricyclic sesquiterpene, is a key biosynthetic intermediate and sheds light on the last steps of the biosynthesis of botrydial derivatives. A higher oxidation level...
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