Studies on the Constituents of the Seeds of Hernandia ovigera L. IX. Identification of Two Dibenzylbutyrolactone-Type Lignans and an Attempt of Conversion into Phenyltetralin-Type Lignan
1991
Two kinds of lignans were isolated from the seeds of Hernandia ovigera L. in addition to the nine lignans previously reported. One was confirmed as (-)-dimethylmatairesinol (11) and the other was identified as 5'-methoxypodorhizol (14) by comparison with the anthentic sample. An attempt at the cyclization of 14 afforded two compounds which were determined to be isohernandin (15) and an isomer of 15, 2-hydroxymethy 1-5, 6-methylenedioxy-7-methoxy-4-(3', 4', 5'-trimethoxyphenyl)-1, 2, 3, 4-tetrahydronaphthoic acid lactone (16).
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