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Polygalasaponin XX

Reference work entry

CAS Registry Number: 173938-31-3 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Oleanene Type – 2β,3β-Dihydroxy-olean-12-en-28-oic Acid

Biological source: Polygala japonica [1]

C42H68O14: 796.460

[α]D20 + 33.5° (c 1.04, C5H5N) [1]

FAB-MS (positive ion mode) m/z: 819 (M + Na)+ [1]

1H NMR (400 MHz, J/Hz, C5D5N): 0.96 (s, CH3-29), 1.02 (s, CH3-30), 1.05 (s, CH3-26), 1.31 (s, CH3-27), 1.35 (s, CH3-23), 1.45 (s, CH3-24), 1.45 (s, CH3-25), 3.30 (d, J = 3.0, H-3), 3.30 (H-18), 4.63 (m, H-2), 5.49 (t-like, H-12)

β-D-Glcp: 4.93 (d, J = 8.0, H-1), 4.10 (dd, J = 8.0, 8.5, H-2), 4.27 (H-3), 4.12 (H-4), 3.91 (m, H-5), 4.25, 4.46 (H2-6)

β-D-Glcp′: 5.31 (d, J = 8.0, H-1), 4.09 (dd, J = 8.0, 8.5, H-2), 4.20 (H-3), 4.28 (H-4), 3.91 (m, H-5), 4.42, 4.47 (H2-6) [1]

13 C NMR (100 MHz, C 5D 5N): [ 1]

Table 1

C-1

44.0

C-16

23.8

Glc-1

104.4

2

70.2

17

46.7

2

83.2

3

89.5

18

42.1

3

78.3

4

38.9

19

46.6

4

71.5

5

56.3

20

31.0

5

78.2...

References

  1. 1.
    D. Zhang, T. Miyase, M. Kuroyanagi, K. Umehara, A. Ueno, Chem. Pharm. Bull. 44(1), 173 (1996)CrossRefGoogle Scholar

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