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Four New Azaphilones from Chaetomium globosum var. flavo-viridae
Four new azaphilones of angular type, named chaetoviridins A, B, C and D, were isolated from the culture of Chaetomium globosum var. flavo-viridae. The absolute configuration of chaetoviridin A wasExpand
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Two novel anti-emetic principles of Alpinia katsumadai.
Two novel diarylheptanoids named katsumadain A (1) and katsumadain B (2) were isolated from the seeds of Alpinia katsumadai, and their structures were determined by spectroscopic analysis. BothExpand
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Chemical assay of ptaquiloside, the carcinogen of pteridium aquilinum, and the distribution of related compounds in the pteridaceae
Abstract A chemical assay of ptaquiloside, the major carcinogen of Pteridium aquilinum , based on two-dimensional TLC-densitometry, was devised. The contents of ptaquiloside and related compounds inExpand
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Antiemetic principles of Alpinia officinarum.
Bioasay-guided fractionation of the antiemetic constituents of Alpinia officinarum was performed, and eight compounds (1-8) including a new compound were isolated. Among the seven known compounds,Expand
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Anti-influenza virus activity of biflavonoids.
Ginkgetin was found to inhibit the influenza virus sialidase. Ginkgetin-sialic acid conjugates showed a significant survival effect in the influenza-virus-infected mice.
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Two prenylated retrochalcones from Glycyrrhiza inflata
Two new chalcones, licochalcones C and D, were isolated from the root of Glycyrrhiza inflata (Leguminosae) together with three known chalcones echinatin, licochalcones A and B. Their structures wereExpand
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Absolute Configurations of Chaetochromin A and Related Bis (naphtho-γ-pyrone) Mold Metabolites
The absolute configuration of chaetochromin A (1) was established by X-ray analysis of the 6-Ο-p-bromobenzoate (15) of the 5, 5', 6', 8, 8'-pentamethyl ether (14). The stereochemistry of the 9-9'Expand
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Synthesis and evaluation of influenza virus sialidase inhibitory activity of hinokiflavone-sialic acid conjugates
- The known biflavonoid, hinokiflavone (1) was isolated from the leaves of Metasequoia glyptostroboides Hu et Cheng and displayed influenza A and B virus sialidase inhibitory activity. The unnaturalExpand
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Anti-emetic principles of Magnolia obovata bark and Zingiber officinale rhizome.
Magnolol and honokiol, biphenyl compounds, were isolated as anti-emetic principles from the methanolic extract of Magnolia obovata bark. [6]-, [8]-, and [10]-shogaols and [6]-, [8]-, andExpand
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Suppression of adipocyte hypertrophy by polymethoxyflavonoids isolated from Kaempferia parviflora.
We previously demonstrated that ethyl acetate extracts of Kaempferia parviflora Wall. Ex Baker (KPE) improve insulin resistance in TSOD mice and showed that its components induce differentiation andExpand
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