Syntheses and Biological Activities of Dihydro-5,6-dehydrokawain Derivatives
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概要
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The syntheses and biological activities of dihydro-5,6-dehydrokawain derivatives against plant pathogenic fungi and termites were investigated. Dihydro-5,6-dehydrokawain was isolated by a simple method without chromatography from the leaves of Alpinia speciosa K. SCHUM. The white crystalline compound obtained was identified as dihydro-5,6-dehydrokawain (1) by instrumental analyses. 4-Hydroxy-6-(2-phenylethyl)-2H-pyran-2-one (3) was prepared by hydrolyzing dihydro-5,6-dehydrokawain. Three dihydro-5,6-dehydrokawain derivatives were synthesized by reacting 3 with phosphoric agents. Among the synthesized compounds, dimethyl [6-(2-phenylethyl)-2-oxo-2H-pyran-4-yl]phosphorothionate (4) had the strongest antifungal activity of 91% at 100 ppm against Corticium rolfsii.
- 社団法人日本農芸化学会の論文
- 1996-10-23
著者
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TAIRA Shigehiko
Department of Bioscience and Biotechnology, College of Agriculture, University of the Ryukyus
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Ishihara M
Laboratory Of Protein Chemistry And Engineering Graduate School Of Bioresource And Environmental Sci
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Ishihara Masanobu
Department Of Bioscience And Biotechnology Faculty Of Agriculture Ryukyu University
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Toyama Seizen
Department Of Bioscience And Biotechnology Faculty Of Agriculture University Of The Ryukyus
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Tawata S
Univ. Ryukyus Okinawa Jpn
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Tawata Shinkichi
Department Of Bioscience And Biotechnology College Of Agriculture University Of Ryukyus
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Kobamoto Naotada
Department Of Bioscience And Biotechnology Technology College Of Agriculture University Of The Ryuky
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Kobamoto Naotada
Department Of Agricultural Chemistry College Of Agriculture University Of The Ryukyus
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TOYAMA Seizen
Department of Agricultural Chemistry, University of the Ryukyus
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