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Ginsenoside-Rb3

Reference work entry

CAS Registry Number: 68406-26-8 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Dammarane Type – 20(S)-Protopanaxadiol

Biological source: Panax ginseng [1], P. notoginseng [2], P. pseudoginseng [3], P. trifolius [4]

C53H90O22: 1078.592

Mp: 193–195°C (i–PrOH) [1]

[α]D28 + 19.4° (c 0.98, MeOH) [1], [α]D15 + 6.0° (c 1.00, MeOH) [2], [α]D24 + 8.5° (c 0.53, MeOH) [3]

IR (KBr) νmax cm−1: 3420, 1620 [1]

1H NMR (90 MHz, J/Hz, CDCl3) (for permethylate): 0.84, 0.88, 0.92, 1.02, 1.32, 1.62, 1.70 (s, CH3 × 7), 3.33-3.60 (s, CH3O), anomeric H: 4.25 (d, J = 7.0), 4.29 (d, J = 7.0), 4.45 (d, J = 7.0), 4.66 (d, J = 7.0) [1]

13 C NMR (25.15 MHz, C 5D 5N): [ 3]

Table 1

C-1

39.4

C-16

26.7

Glc-1

104.8

Glc″-1

97.9

2

26.7

17

51.7

2

83.4

2

74.8

3

89.1

18

16.2

3

77.7

3

78.1

4

39.7

19

16.2

4

71.7

4

71.7

5

56.5

20

83.5

5

78.8

5

76.6

6

18.4

21

22.3

6

62.8

6

69.8

7

35.1

22

36.2

Glc′-1

105.6

Xyl-1

105.2

8

40.1

23

23.1

2

76.7

2

74.2

References

  1. 1.
    S. Sanada, J. Shoji, Chem. Pharm. Bull. 26(6), 1694 (1978)CrossRefGoogle Scholar
  2. 2.
    T.R. Yang, R. Kasai, J. Zhou, O. Tanaka, Phytochemistry 22, 1473 (1983)CrossRefGoogle Scholar
  3. 3.
    O. Tanaka, S. Yahara, Phytochemistry 17(8), 1353 (1978)CrossRefGoogle Scholar
  4. 4.
    T.M. Lee, A.H. Marderosian, Phytoter. Res. 2, 165 (1988) [Chem. Abstr. 110: 209296k (1989)]CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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