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Eupteleasaponin IX

Reference work entry

CAS Registry Number: 290809-42-6 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Oleanene Type – 3β,20α-Dihydroxy-29-nor-olean-12-en-28-oic Acid

Biological source: Euptelea polyandra [1]

C43H68O15: 824.455

Mp: 221–225°C [1]

[α]D26 + 34.9° (c 0.1, MeOH) [1]

IR (KBr) νmax cm−1: 3432, 1730, 1042 [1]

HR-FAB-MS (positive ion) m/z: 825.4637 (M + H)+, 847 (M + Na)+ [1]

FAB-MS (negative ion mode) m/z: 823 (M-H), 781 (M-C2H3O), 677 (M-C6H11O4), 635 (C8H13O5), 473 (M-C14H23O9) [1]

1H NMR (500 MHz, J/Hz, C5D5N): 0.91, 0.97, 1.22, 1.48, 1.56 (s, CH3-25, 26, 27, 23, 30), 1.89 (s, Ac-2), 3.32 (dd-like, H-18), 3.51 (dd, J = 5.3, 10.2, H-3), 4.55, 4.62 (m, H2-24), 5.51 (brs, H-12)

β-D-Glcp: 4.79 (d, J = 7.6, H-1)

α-L-Rhap: 5.52 (brs, H-1), 1.66 (d, J = 5.9, CH3-6) [1]

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

Table 1

C-1

39.2

C-16

23.9

Glc-1

105.2

2

28.3

17

46.8

2

75.1

3

79.3

18

44.4

3

76.5

4

43.2

19

48.1

4

79.2

5

56.7

20

References

  1. 1.
    T. Murakami, H. Oominami, H. Matsuda, M. Yoshikawa, Chem. Pharm. Bull. 49(6), 741 (2001)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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