Unusual Secondary Metabolites from Astragalus halicacabus LAM.
Makaleler > Tam Makale · 2013
Yazarlar: Basile-Jimmy DJIMTOMBAYE, Özgen ALANKUŞ, Derya GÜLCEMAL, Ikhlas A. Khan, Huseyin ANIL, ERDAL BEDİR
CHEMISTRY & BIODIVERSITY, SCI Expanded İndekslerine Giren Dergi, Uluslararası, 2013, cilt 10, ss 1328-1334
Özet
From the whole plant of Astragalus halicacabus (Sect. Halicacabus), a new cycloartane-type glycoside, (20R,24S)-3-O-[-L-arabinopyranosyl-(12)--D-xylopyranosyl]-20,24-epoxy-16-O--D-glucopyranosyl-3,6,16,25-tetrahydroxycycloartane, and a new glycoside, 3-O-[-D-apiofuranosyl-(12)--D-glucopyranosyl]maltol were isolated together with seven known cycloartane-type glycosides, i.e., cyclocanthoside D, askendosides D, F, and G, cyclosieversioside G, cyclostipuloside A, elongatoside, and a known maltol glucoside, 3-O--D-glucopyranosylmaltol. The structures were elucidated by means of high-resolution mass spectrometry, and extensive 1D- and 2D-NMR spectroscopic analysis. This is the first phytochemical work on A. halicacabus, and a maltol glycoside was encountered for the first time in the Leguminosae family.