Structure-activity relationships in the fungistatic activity against Botrytis cinerea of clovanes modified on ring C

The preparation of clovanes 4, 5, 6, 8, and 9, which bear different levels of oxidation on ring C, is described for the first time. The biotransformation of compounds 5, 6, and 9 by the fungus Botrytis cinerea is investigated, yielding compounds 10, 11, and 12, which are described for the first time...

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