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    Article

    Inhibitory effect of Lysichiton camtschatcense extracts on Fe2+/ascorbate-induced lipid peroxidation in rat kidney and brain homogenates

    Lysichiton camtschatcense is a well-known plant in Japan where it has been used as a traditional medicine by the “Ainu” people for the treatment of acute nephritis. It is presumed that L....

    Hirokatsu Takatsu, Masahiro Ogata, Koji Fukui… in Journal of Natural Medicines (2009)

  2. Article

    A Novel Indole-diterpenoid, JBIR-03 with Anti-MRSA Activity from Dichotomomyces cejpii var. cejpii NBRC 103559

    A new indole-diterpene, JBIR-03 (1), was isolated from the fungus Dichotomomyces cejpii var. cejpii NBRC 103559 and its structure was determined based on the spectroscopic data. 1 exhibited anti-MRSA (methicillin...

    Masahiro Ogata, Jun-ya Ueda, Midori Hoshi, Junko Hashimoto… in The Journal of Antibiotics (2007)

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    DMPO-OH Radical Formation from 5,5-Dimethyl-1-pyrroline N-Oxide (DMPO) in Hot Water

    When an aqueous solution of 5,5-dimethyl-1-pyrroline N-oxide (DMPO) was heated at 70˚C for 30 min, formation of DMPO-OH was observed by ESR. This DMPO-OH radical formation was suppressed under an argon atmosphere...

    Tomoko Shoji, Linxiang Li, Yoshihiro Abe, Masahiro Ogata… in Analytical Sciences (2007)

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    Article

    Antioxidant activity of Magnolol, honokiol, and related phenolic compounds

    The antioxidant activity of 10 Japanese and Chinese crude drugs (Kampo drugs) was determined in vitro. Extract of Magnolia cortex, which had the highest antioxidant activity, contained phenolic compounds magnolol...

    Masahiro Ogata, Midori Hoshi… in Journal of the American Oil Chemists' Soci… (1997)