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Isolation of glycosidase-inhibiting hyacinthacines and related alkaloids from Scilla socialis.
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An examination of the bulbs of Scilla socialis has resulted in the isolation of 11 hyacinthacines, two pyrrolidines, and three piperidines. The structures of the new alkaloids were elucidated by spectroscopic methods as beta-1-C-ethyldeoxymannojirimycin (5), hyacinthacines B7 (10), C2 (11), C3 (12),
New polyhydroxylated pyrrolidine, piperidine, and pyrrolizidine alkaloids from Scilla sibirica.
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Chromatographic separation of an extract of the bulbs of Scilla sibirica resulted in the isolation of five pyrrolidines, two pyrrolidine glycosides, six piperidines, one piperidine glycoside, and eight pyrrolizidines. 2,5-Dideoxy-2,5-imino-glycero-d-manno-heptitol (homoDMDP, 1) is a common alkaloid
Polyhydroxylated pyrrolidine and pyrrolizidine alkaloids from Hyancinthoides non-scripta and Scilla campanulata.
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Aqueous ethanol extracts from the immature fruits and stalks of bluebell (Hyacinthoides non-scripta) were subjected to various ion-exchange column chromatographic steps to give 1,4-dideoxy-1,4-imino-D-arabinitol (1),2(R),5(R)-bis(hydroxymethyl)-3(R),4(R)-dihydroxypyrrolidine (DMDP) (2),
Sulfadiazine Masquerading as a Natural Product from Scilla madeirensis (Scilloideae).
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The structure of 2,4-(4'-aminobenzenamine)pyrimidine (1), a pyrimidine alkaloid previously isolated from the bulbs of Scilla madeirensis (Asparagaceae, synonym Autonoë madeirensis), has been revised. These conclusions were met via comparison of reported NMR and EIMS data with
Two new nortriterpenoid glycosides and a new phenylpropanoid glycoside from the bulbs of Scilla scilloides.
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Two new norlanostane-type triterpenoid glycosides and a new phenylpropanoid glycoside were isolated from the bulbs of Scilla scilloides DRUCE (Liliaceae), along with two known alkaloids. Their chemical structures were determined on the basis of spectroscopic data as well as chemical evidence.
[Advances on chemical constituents and pharmacological activity of genus Scilla].
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The genus Scilla consists of 90 species widely distributed in Europe, Asia and Africa, one and its variant of which can be found in China Some species of the genus have been used in traditional medicine to treat various diseases related to inflammation and pain. Phytochemical studies have
Glycosidase-inhibiting pyrrolidines and pyrrolizidines with a long side chain in Scilla peruviana.
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2,5-Dideoxy-2,5-imino-d-glycero-d-manno-heptitol (homoDMDP) is widely distributed in Hyacinthaceae plants and can also be regarded as the alpha-1-C-(1,2-dihydroxyethyl) derivative of 1,4-dideoxy-1,4-imino-d-arabinitol (d-AB1). In a search for glycosidase inhibitors in this family of plants, we
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