7-Hydroxyphthalide: A New Natural Salicylaldehyde Analog from Oulenzia sp.(Astigmata: Winterschmitiidae)

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  • SHIMIZU Nobuhiro
    Laboratory of Chemical Ecology, Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University
  • KUWAHARA Yasumasa
    Laboratory of Chemical Ecology, Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University

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タイトル別名
  • Chemical Ecology of Astigmatid Mites. Part LX. 7-Hydroxyphthalide. A New Natural Salicylaldehyde Analog from Oulenzia sp. (Astigmata:Winterschmittidae).

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A new salicy lactone was detected from the unidentified Oulenzia sp. and its chemical structure was elucidated as 7-hydroxyphthalide (7-hydroxy-3 H-isobenzofuran-1-one), based on its GC/MS and GC/FT-IR data and SiO2 column behavior. The compound was synthesized by NaBH4 reduction of 3-hydroxyphthalic anhydride. The GC/MS and GC/FT-IR spectra of the natural compound were consistent with those of the synthetic product. Although the compound is known as a medical material, this is the first example of its presence in nature.

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