3-O-Rhamnopyranosylisorhamnetin, 3-O-glucopyranosylisorhamnetin, 7-O-galactopyranosylluteolin, quercitrin, isoquercitrin, wistin, and a novel isoflavonoid, 3′-hydroxy-6,4′-dimethoxy-7-O-β-D-glucopyranosylisoflavone, were isolated from the aerial parts of Caragana alaica. Of these, the previously described compounds were identified on the basis of their physicochemical and spectral characteristics, whereas the spectral analysis and conversion to a known compound, cladrastin, allowed the structural elucidation of the novel isoflavone glycoside.
Caragana alaica, 3′-hydroxy-6, 4′-dimethoxy-7-O-β-D-glucopyranosylisoflavone, 3-O-rhamnopyranosylisorhamnetin, 3-O-glucopyranosylisorhamnetin, 7-O-galactopyranosylluteolin
NCBI PubMed ID: 11696899Publication DOI: 10.1007/BF02759633Journal NLM ID: 9420101Publisher: Springer Science and Business Media
Institutions: Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences of Republic of Uzbekistan, Tashkent, Uzbekistan
Methods: 13C NMR, 1H NMR, NMR-2D, IR, TLC, enzymatic hydrolysis, acid hydrolysis, HPLC, UV, extraction, optical rotation measurement, melting point determination, HR-FAB-MS
Found