SAPONINS FROM VIETNAMESE GINSENG, PANAX-VIETNAMENSIS HA ET GRUSHV COLLECTED IN CENTRAL VIETNAM .2

Further investigation on the saponin composition of rhizomes and roots of Panax vietnamensis HA et GRUSHV. has resulted in the isolation and structural elucidation of seven new dammarane saponins named vina-ginsenosides-R3 (12), -R4 (II), -R5 (16), -R6 (17), -R7 (6), -R8 (20), -R9 (22), together wit...

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Bibliographic Details
Published inChemical & pharmaceutical bulletin Vol. 42; no. 1; pp. 115 - 122
Main Authors DUC, NM, KASAI, R, OHTANI, K, ITO, A, NHAM, NT, YAMASAKI, K, TANAKA, O
Format Journal Article
LanguageEnglish
Published TOKYO Pharmaceutical Soc Japan 01.01.1994
Subjects
Chemistry
Chemistry, Medicinal
Chemistry, Multidisciplinary
Life Sciences & Biomedicine
Pharmacology & Pharmacy
Physical Sciences
Science & Technology
MEYER,C.A
PANAX VIETNAMENSIS
VIETNAMESE GINSENG
GINSENOSIDE
LEAVES
DAMMARENEDIOL SAPONIN
ROOTS
DAMMARANE-TYPE SAPONINS
TRITERPENES
DAMMARANE SAPONIN
VINA-GINSENOSIDE-R3, -R4, -R5, -R6, -R7, -R8, -R9
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Summary:Further investigation on the saponin composition of rhizomes and roots of Panax vietnamensis HA et GRUSHV. has resulted in the isolation and structural elucidation of seven new dammarane saponins named vina-ginsenosides-R3 (12), -R4 (II), -R5 (16), -R6 (17), -R7 (6), -R8 (20), -R9 (22), together with the identification of sis known saponins including 20-gluco-ginsenoside-Rf (10), ginsenoside-Rc (4), notoginsenoside-R6 (9), quinquenoside-R(1), (5), gypenoside XVII (2) and majoroside FT (21). The structures of the novel saponins were established on the basis of chemical and spectral evidence. Vina-ginsenoside-R3 is the first naturally occurring glycoside of dammarenediol II, while vina-ginsenosides-R5 and -R6, two ocotillol-type saponins, are two other examples of saponins having the rare alpha-glucosyl linkage.
ISSN:0009-2363