Isolation and structural elucidation of three new pyridoxine-glycosides in rice bran.
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چکیده
منابع مشابه
ISOLATION AND STRUCTURAL ELUCIDATION OF THE FIRST KNOWN C-HOMOPROTOBERBERINE
A novel C-homoprotoberberine alkaloid, Hediamine (2), has been isolated from the roots of Berberis actinucantha (Berberidaceae). Conclusive proof for the structure of hediamine was obtained by its comparison with the isomeric lactam (4), by chemical transformation, and by means of spectroscopic techniques (UV, IR, MS, NMR).
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15 صفحه اولIsolation, structural elucidation, and cytotoxicity of three new ent-kaurane diterpenoids from Isodon japonica var. glaucocalyx.
Three new ENT-kaurane diterpenoids, glaucocalyxin H ( 1), glaucocalyxin I ( 2), and glaucocalyxin J ( 3), together with four known diterpenoids ( 4- 7), were isolated from the leaves of Isodon japonica Hara var. glaucocalyx. Their structures were elucidated by spectroscopic analysis, and the structures of compounds 2 and 3 were further confirmed by X-ray crystallographic analysis. Compounds 1, ...
متن کاملMass spectrometry in the structural elucidation of natural products: Glycosides
Mass Spectrometry is an important tool for the identification and structural elucidation of natural products. A review of the last fifteen years of research in this field, applied to natural glycosides, is presented.
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ژورنال
عنوان ژورنال: Journal of Nutritional Science and Vitaminology
سال: 1988
ISSN: 0301-4800,1881-7742
DOI: 10.3177/jnsv.34.167