Nitrogen-Containing Furanose and Pyranose Analogues from Hyacinthus orientalis

Aqueous methanol extracts from the bulbs of Hyacinthus orientalis were subjected to various ion-exchange column chromatographic steps to give 2(R),5(R)-bis(hydroxymethyl)-3(R),4(R)-dihydroxypyrrolidine (DMDP) (1), 2,5-dideoxy-2,5-imino-dl-glycero-d-manno-heptitol (homoDMDP) (2), 2,5-imino-2,5,6-trid...

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Veröffentlicht in:Journal of natural products (Washington, D.C.) D.C.), 1998-05, Vol.61 (5), p.625-628
Hauptverfasser: Asano, Naoki, Kato, Atsushi, Miyauchi, Miwa, Kizu, Haruhisa, Kameda, Yukihiko, Watson, Alison A, Nash, Robert J, Fleet, George W. J
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Sprache:eng
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Zusammenfassung:Aqueous methanol extracts from the bulbs of Hyacinthus orientalis were subjected to various ion-exchange column chromatographic steps to give 2(R),5(R)-bis(hydroxymethyl)-3(R),4(R)-dihydroxypyrrolidine (DMDP) (1), 2,5-dideoxy-2,5-imino-dl-glycero-d-manno-heptitol (homoDMDP) (2), 2,5-imino-2,5,6-trideoxy-d-manno-heptitol (6-deoxy-homoDMDP) (3), 2,5-imino-2,5,6-trideoxy-d-gulo-heptitol (4), 1-deoxynojirimycin (5), 1-deoxymannojirimycin (6), α-homonojirimycin (7), β-homonojirimycin (8), α-homomannojirimycin (9), β-homomannojirimycin (10), and 7-O-β-d-glucopyranosyl-α-homonojirimycin (MDL 25,637) (11). The structures of the new natural products 3 and 4 were determined by spectroscopic analysis, including extensive 1D and 2D NMR studies. Compound 2 was found to be a potent inhibitor of bacterial β-glucosidase, mammalian β-galactosidases, and mammalian trehalases, while 3 was a potent inhibitor of rice α-glucosidase and rat intestinal maltase. Compound 4 was observed to be a good inhibitor of α-l-fucosidase.
ISSN:0163-3864
1520-6025
DOI:10.1021/np9705726