Isoflavonoids in the Rutaceae family: 1. Fortunella obovata, Murraya paniculata and four Citrus species.
Several types of compounds with immunoreactivity similar to isoflavonoids were detected in water: ethanol extracts of leaves of Fortunella obovata Hort. ex Tanaka, Murraya paniculata Jack. and four Citrus species, namely C. aurantium L, C. grandis Osbeck, C. limonia Osbeck., and C. sinensis Osbeck (Rutaceae). The chromatographic mobilities of the immunoreactive substances were compared with those of authentic standards, revealing a spectrum of isoflavonoid metabolites in all plants studied. Aglycones as well as glycosides were recognized, namely daidzin, genistin, daidzein, genistein, formononetin, biochanin A, prunetin, and several incompletely characterized isoflavonoids. A subsequent HPLC-MS study verified the identities of the main immunoreactive isoflavonoids and established the identities of several others, viz. glycitein, glycitin, ononin and sissotrin, including the malonylated and acetylated isoflavonoid glucosides. The estimated content of the individual immunoreactive entities ranged from a few microg to about 2 mg/kg (dry weight). It is concluded that the isoflavonoid metabolic pathway is present throughout the Rutaceae family.
Lapcík
Oldrich
O
Department of Chemistry of Natural Compounds, Institute of Chemical Technology, Prague, Czech Republic. oldrich.lapcik@vscht.cz
Klejdus
Borivoj
B
Davidová
Michaela
M
Kokoska
Ladislav
L
Kubán
Vlastimil
V
Moravcová
Jitka
J
D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D019833:Genistein / Q000737:chemistry / Q000378:metabolism; D007529:Isoflavones / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D013058:Mass Spectrometry; D018515:Plant Leaves / Q000737:chemistry / Q000378:metabolism; D011863:Radioimmunoassay; D027821:Rutaceae / Q000737:chemistry* / Q000378:metabolism
D007529:Isoflavones; C004742:daidzein; D019833:Genistein