Homoisoflavonoids from Ophiopogon japonicus Ker-Gawler |
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Authors: | Hoang Anh Nguyen Thi Van Sung Tran Porzel Andrea Franke Katrin Wessjohann Ludger A |
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Affiliation: | Institute of Chemistry, National Centre for Natural Sciences and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam. |
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Abstract: | From the ethyl acetate extract of the tuberous roots of Ophiopogon japonicus (Liliaceae) eight known and five new homoisoflavonoidal compounds were isolated. The new compounds are 5,7-dihydroxy-8-methoxy-6-methyl-3-(2'-hydroxy-4'-methoxybenzyl)chroman-4-one (1), 7-hydroxy-5,8-dimethoxy-6-methyl-3-(2'-hydroxy-4'-methoxybenzyl)chroman-4-one (2), 5,7-dihydroxy-6,8-dimethyl-3-(4'-hydroxy-3'-methoxybenzyl)chroman-4-one (3), 2,5,7-trihydroxy-6,8-dimethyl-3-(3',4'-methylenedioxybenzyl)chroman-4-one (4) and 2,5,7-trihydroxy-6,8-dimethyl-3-(4'-methoxybenzyl)chroman-4-one (5). Their structures have been elucidated by mass and NMR spectroscopy. Compounds 4 and 5 are the first isolated homoisoflavonoids with a hemiacetal function at position 2. |
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Keywords: | Ophiopogon japonicus Liliaceae Homoisoflavonoids |
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