芫花叶中的新木脂素内酯
A NEW LIGNANOLIDE FROM THE LEAVES OF DAPHNE GENKWA
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Abstract: A new (-)-4 - oxo - 2, 6 - bis - (3', 4'-methylenedioxy phenyl)-3, 7-dioxabicyclo3, 3, 0 octane lignan, genkdaphin was isolated from the leaves of Daphne genkwa Sieb. et Zucc. mp 118~119.5℃, C20H16O7 (HRMS, 368.08631, M+),αd27-64.8.(c0.5, CHCl3). On the basis of UV, IR, Ms, 1H and 13CNMR spectral analysis, the structure of the genkdaphin has been established as (-)-4-oxosesamin.
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