Browsing IBERS Research papers by Author "Ikeda, Kyoko"

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  • Kato, Atsushi; Ikeda, Kyoko; Watson, Alison A.; Haraguchi, M.; Minami, Y.; Asano, Naoki; Nash, Robert J.; Molyneux, R. J.; Gorniak, S. L. (2003-07-11)
    Natural intoxication of livestock by the ingestion of Ipomoea carnea (Convolvulaceae) sometimes occurs in tropical regions of the world. Polyhydroxylated alkaloids were isolated from the leaves, flowers, and seeds of the ...
  • Kato, Atsushi; Kano, E.; Adachi, Isao; Molyneux, R. J.; Watson, Alison A.; Nash, Robert J.; Fleet, George W. J.; Wormald, M. R.; Kizu, Haruhisa; Ikeda, Kyoko; Asano, Naoki (2003-02-07)
    The first polyhydroxylated pyrrolizidine alkaloid with a hydroxymethyl group at C-3 was isolated from pods of Alexa leiopetala (Leguminosae) and designated alexine 1. The Australian legume Castanospermum australe is also ...
  • Asano, Naoki; Yokoyama, Kae; Sakurai, Mio; Ikeda, Kyoko; Kizu, Haruhisa; Kato, Atsushi; Arisawa, Munehisa; Hoke, Dirk; Watson, Alison A.; Nash, Robert J. (2001-07)
    Three dihydroxynortropanes, 2α,7β-dihydroxynortropane, 2α,3β-dihydroxynortropane, and 3α,7β-dihydroxynortropane, were isolated from calystegine-producing plants in the families Convolvulaceae and Solanaceae. 2α,7β-Dihydr ...
  • Kato, Atsushi; Kato, Noriko; Miyauchi, Saori; Minoshima, Yuka; Adachi, Isao; Ikeda, Kyoko; Asano, Naoki; Watson, Alison A.; Nash, Robert J. (2008-03)
    Chromatographic separation of the 50% aqueous EtOH extract of the leaves of the African medicinal tree Baphia nitida resulted in isolation of 10 iminosugars. The plant contained 2R,5R-dihydroxymethyl-3R,4R-dihydroxypyrrolidine ...
  • Nash, Robert J.; Asano, Naoki; Winters, Ana L.; Yu, C. Y.; Fleet, George W. J.; Butters, T. D.; Ikeda, Kyoko; Dwek, R. A.; Wormald, M. R.; Wang, M. X. (2004-07-29)
    L-DMDP, prepared from D-gulonolactone, is a highly specific inhibitor of a number of plant and mammalian -glucosidases [between 2 and 4 orders of magnitude more potent than the enantiomeric natural product DMDP] but is not ...
  • Kato, Atsushi; Lee, Heui S.; Kizu, Haruhisa; Kameda, Yukihiko; Ikeda, Kyoko; Nash, Robert J.; Yasuda, Kayo; Ryu, Kang S.; Asano, Naoki; Yamashita, Toru (2001-08-16)
    New polyhydroxylated alkaloids, (2R,3R,4R)-2-hydroxymethyl-3,4-dihydroxypyrrolidine-N-propionamide from the root bark of Morus alba L., and 4-O-α-d-galactopyranosyl-calystegine B2 and 3β,6β-dihydroxynortropane from the ...

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