Quinquenoside V

Reference work entry

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

Biological source: Panax quinquefolium [1]

C60H102O28: 1270.655

Mp: 192–194°C [1]

[α]D28 + 24.4° (c 0.25, MeOH) [1]

IR (KBr) νmax cm−1: 3399, 1655, 1075 [1]

FAB-MS (negative ion mode) m/z: 1269 (M-H), 1107 (M-C6H11O5) [1]

HR-FAB-MS (positive ion mode) m/z: 1293 (M + Na)+, 1315 (M + 2Na-H)+ [1]

1H NMR (500 MHz, J/Hz, C5D5N): 0.83, 0.96, 0.97, 1.09, 1.27, 1.68 (s, CH3-19, 30, 18, 29, 28, 27), 1.64 (s, CH3-21, 26), 1.98 (t-like, H-13), 3.26 (dd, J = 4.2, 11.2, H-3), 4.14 (m, H-12), 5.31 (t-like, H-24)

β-D-Glcp: 4.88 (d, J = 7.6, H-1); β-D-Glcp′: 5.32 (d, J = 7.9, H-1); β-D-Glcp″: 5.08 (d, J = 7.6, H-1); β-D-Glcp″′: 5.00 (d, J = 7.9, H-1); α-D-Glcp: 5.82 (d, J = 4.0, H-1) [1]

13 C NMR (125 MHz, C 5D 5N): [ 1]

Table 1

C-1

39.3

C-18

16.1

Glc-1

105.0

Glc″′-1

105.0

2

26.8

19

16.3

2

83.6

2

74.8

3

89.1

20

83.5

3

78.3

3

77.6

4

References

  1. 1.
    M. Yoshikawa, T. Murakami, K. Yashiro, J. Yamahara, H. Matsuda, R. Saijoh, O. Tanaka, Chem. Pharm. Bull. 46(4), 647 (1998)CrossRefGoogle Scholar

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