Zeitschrift für Naturforschung - Section C Journal of Biosciences
Titerpenoid saponins from Atriplex semibaccata.
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Four new triterpenoid saponins, 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)-11alpha-methoxy-23-hydroxylongispinogenin, 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)-11alpha-methoxy-23,29-dihydroxylongispinogenin, 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)-29-hydroxysaikogenin F and 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)-saikogenin F, have been isolated from Atriplex semibaccata. The structures were determined primarily by NMR spectroscopy. The assignment of NMR signals was performed by means of 1H-1H COSY, ROESY, HMQC and HMBC experiments.