Journal
JOURNAL OF NATURAL PRODUCTS
Volume 75, Issue 10, Pages 1828-1832Publisher
AMER CHEMICAL SOC
DOI: 10.1021/np300642t
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Funding
- NSFC [30873200, 41076082, 81202453]
- NIIDI [10038]
- [HURO/0901/274/2.2.2]
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Herbarone (1), a novel heptaketide with a tetrahydro-5,9-methanobenzo[8]annulen-10(5H)-one skeleton, together with the new ent-astropaquinones B (2) and C (3) and four known pyranonaphthoquinones (4-7), was isolated from the sea hare associated fungus Torula herbarum. The structures of the new compounds were elucidated by detailed spectroscopic analysis, and the absolute configurations were determined by solution TDDFT/ECD calculations. Absolute configurations of the known compounds were studied by ECD measurements and calculations. The isolation of heptaketide 1 suggests that an intramolecular aldol reaction takes place to form the tricyclic scaffold.
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