Abstract
A new resveratrol tetramer, vaticanol K (1) was isolated from the stem of Vatica chinensis. On the basis of combined spectroscopic analyses, the compound was structurally elucidated. Compound 1 possesses an unprecedented fused 2,7-dihydrooxepine–quinone methide skeleton presumably derived from the concerted intramolecular cyclization of two resveratrol dimers followed by desaturation extending conjugation.
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