Abstract
Two new dihydrobenzofuran lignanosides, (7R,8S)-4,3',9'-trihydroxyl-3-methoxyl-7,8-dihydrobenzofuran-1'-propylneolignan-9-O-(6-O-syringoyl)-beta-D-glucopyranoside, named lophanthoside B (1) and (7R,8S)-4,9,9'-trihydroxyl-3-methoxyl-7,8-dihydrobenzofuran-1'-propylneolignan-3'-O-beta-D-glucopyranoside (2), an enantiomer of umbroside, along with four known dihydrobenzofuran lignans (3-6), were isolated from 50% acetone extract of Rabdosia lophanthoides (Buch.-Ham.ex D.Don) Hara. Their structures were elucidated by NMR and MS experiments.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Benzofurans / chemistry
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Benzofurans / isolation & purification*
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Drugs, Chinese Herbal / chemistry
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Glycosides / chemistry
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Glycosides / isolation & purification*
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Isodon / chemistry*
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Lignans / chemistry
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Lignans / isolation & purification*
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Molecular Structure
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Nuclear Magnetic Resonance, Biomolecular
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Stereoisomerism
Substances
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(7R,8S)-4,9,9'-trihydroxyl-3-methoxyl-7,8-dihydrobenzofuran-1'-propylneolignan-3'-O-beta-D-glucopyranoside
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Benzofurans
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Drugs, Chinese Herbal
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Glycosides
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Lignans
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lophanthoside B