NMR Assignments of Two Minor Ginsenosides Extratced from Panax notoginseng (Burk.) F. H. Chen

Abstract

Abstract:

Two ginsenosides were isolated from the 80% ethanol extract of the root of Panax notoginseng, namely 6-O-(β-D-glucopyranosyl)-20-O-(β-D-xylopyranosyl)-3β，6α，12β，20(S)-tetrahydroxydammar-24-ene (compound 1) and notoginsenoside U (compound 2). Their structures were elucidated by one-imensional and two-dimensional NMR (i.e., ¹H-¹H COSY, HSQC and HMBC) experiments. The ¹³C NMR spectral data of compound 1 was compared with those reported in the previous references, and corrections were made for some previous assignments which were incorrect. The completed assignments of
compound 1 were obtained. The ¹H and ¹³C NMR signals of compound 2 in prydine-d₅ were assigned.

Key words: NMR, ginsenosides, Panax notoginseng, assignment

CLC Number:

O482.53

HUANG Gui-kun1，QIU Li1,2,3*，JIAO Yang1，YUAN Jing-quan1,2,3，XIE Ji-zhao1，MIAO Jian-hua2. NMR Assignments of Two Minor Ginsenosides Extratced from Panax notoginseng (Burk.) F. H. Chen[J]. Chinese Journal of Magnetic Resonance.

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