Biosynthesis of the Irregular C12‐Terpenoid Dehydrogeosmin in Flower Heads of Rebutia marsoneri WERD. (Cactaceae)
作者： Zhuofu Feng , Udo Huber , Wilhelm Boland
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摘要: Farnesol (3a) is the precursor to irregular C12 terpenoid (4S, 4aS, 8aS)-1,2,3,4,4a,5,8,8a-octahydro-4,8a-dimethylnaphthalen-4a-ol (= dehydrogeosmin; 1). The C-backbone originates from oxidative removal of a C3 side chain C15 eudesmane-type intermediate (Scheme 2). bicyclic C-framework assembled by formal addition H2O across endocyclic double bonds monocyclic germacradiene-type precursor. biosynthetic pathway follows administration deuteriated farnesols 3b–e flower heads cactaceae Rebutia marsoneri Werd. and mass-spectroscopic analysis collected volatiles.
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