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Browsing by Author "Kizu, Haruhisa"

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Australine and related alkaloids: easy structural confirmation by C-13 NMR spectral data and biological activities

Molyneux, R. J.; Watson, Alison A.; Kato, Atsushi; Kano, E.; al, et; Fleet, George W. J.; Ikeda, Kyoko; Adachi, Isao; Wormald, M. R.; Nash, Robert J.; Kizu, Haruhisa (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 ...
Dihydroxynortropane alkaloids from calystegine-producing plants

Arisawa, M.; Hoke, D.; al, et; Drager, B.; Asano, Naoki; Yokoyama, K.; Ikeda, Kyoko; Sakurai, M.; Kizu, Haruhisa; Kato, Atsushi; Watson, Alison A. (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 ...
Inhibitory effects of Zingiber officinale roscoe derived components on aldose reductase activity in vitro and in vivo

Kato, Atsushi; Nash, Robert J.; Asano, Naoki; Okamoto, T.; Kizu, Haruhisa; Higuchi, Y.; Adachi, Isao; Goto, H.; Hollinshead, Jackie (2006-08-05)

Ginger (Zingiber officinale Roscoe) continues to be used as an important cooking spice and herbal medicine around the world. Scientific research has gradually verified the antidiabetic effects of ginger. Especially gingerols, ...
New sugar-mimic alkaloids from the pods of Anglyocalyx pynaertii (Leguminosae)

Kizu, Haruhisa; Yasuda, Kayo; Yamashita, Toru (2002)

Chromatographic separation of the pod extract of Angylocalyx pynaertii resulted in the isolation of 13 sugar-mimic alkaloids (1−13). The structures of the new alkaloids were elucidated by spectroscopic methods as the ...
Novel alpha-L-fucosidase inhibitors from the bark of Angylocalyx pynaertii (Leguminosae)

Yasuda, Kayo; Fan, J. -. Q.; Kizu, Haruhisa; Molyneux, R. J.; Nash, Robert J.; Kato, Atsushi; Asano, Naoki; Fleet, George W. J. (2001-01)

The extract of bark of Angylocalyx pynaertii (Leguminosae) was found to potently inhibit mammalian α- l-fucosidases. A thorough examination of the extract resulted in the discovery of 15 polyhydroxylated alkaloids, including ...
Polyhydroxylated alkaloids isolated from mulberry trees (Morus alba L.) and silkworms (Bombyx mori L.)

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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