Abstract
From Red Ginseng, all of the known saponins of White Ginseng were isolated in yields similar to those obtained from White Ginseng. Two additional minor saponins, notoginsenoside-R1 (19) (the saponin of roots of Panax notoginseng) and quinquenoside-R1 (20) (the saponin of roots of P. quinquefolium), were also isolated and identified. Besides these known saponins, two new minor saponins named ginsenosides-Rs1 (17) and -Rs2 (18) were also isolated. Compounds 17 and 18 were established to be monoacetates at the 6-hydroxyl group of the terminal glucosyl moiety of the sophorosyl unit of ginsenosides-Rb2 (5) and-Rc (7), respectively.
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