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New eudesmane sesquiterpenes from the root of Lindera strychnifolia
I Kouno1, A Hirai, A Fukushige
1Faculty of Pharmaceutical Sciences, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan. ikouno@net.nagasaki-u.ac.jp
Journal of Natural Products
|March 30, 2001
Abstract:
Strychnistenolide (1) and its acetate 2 were isolated from the root of Lindera strychnifolia, along with a novel rearranged type of secoeudesmane, strychnilactone (3). Their structures were elucidated by extensive analysis of their NMR spectra, including 2D NMR techniques, together with an X-ray analysis for 3. Strychnistenolide exists as a single stereoisomer in CHCl(3), but in pyridine is epimerized.