A new minor oleanane-type saponin, ginsenoside-R(OA) (1), has been isolated from the extract of Kaixin-San, a prescription composed of Panax ginseng and other medicinal herbs, together with 15 known ginsenosides. The structure of 1 was established as 3-O-beta-D-glucopyranosyl-(1-->2)-beta-D-glucuronopyranosyl oleanolic acid 28-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranoside by chemical and spectroscopic evidence. In addition, the presence of ginsenoside-R(OA) in ginseng was confirmed by HPLC-ESI-MS.
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| http://dx.doi.org/10.1080/1028602032000169550 | DOI Listing |
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