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Volvalerine A (1), a novel N-containing bisesquiterpenoid derivative with a dihydroisoxazole ring, and its possible biosynthetic precursor, 1-hydroxy-1,11,11-trimethyldecahydrocyclopropane azulene-10-one (2), were isolated from the roots of Valeriana officinalis var. latifolia. Their structures and relative configurations were identified using spectroscopic data and X-ray crystallography. A plausible...
Nardokanshone A (1), a new type of sesquieterpenoid–chalcone hybird, with a 2,3-dihydrofuran ring fusing an aristolane-type sesquiterpenoid and a chalcone, along with its possible bioprecursor, kanshone C (2), together with four known flavones were isolated from Nardostachys chinensis. Their structures were elucidated by spectroscopic methods, and the absolute configuration of 1 was determined by...
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