Eupteleasaponin VI Acetate

Reference work entry

CAS Registry Number: 354527-11-0

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Oleanene Type – Eupteleogenin

Biological source: Euptelea polyandra [1]

C49H74O19: 966.482

Mp: 180–184°C [1]

[α]D26 + 31.9° (c 0.1, MeOH) [1]

IR (KBr) νmax cm−1: 3453, 1761, 1658, 1060 [1]

FAB-MS (negative ion mode) m/z: 965 (M-H), 923 (M-C2H3O) [1]

FAB-MS (positive ion mode) m/z: 989 (M + Na)+ [1]

1H NMR (500 MHz, J/Hz, C5D5N): 0.91, 1.09, 1.13, 1.17, 1.24 (s, CH3-25, 26, 24, 27, 23), 2.17 (s, Ac-2), 2.32 (dd-like, H-18), 3.02 (brs, H-11), 3.14 (d-like, H-12), 3.40 (dd, J = 3.9, 11.0, H-3), 4.73 (m, H2-29)

β-D-Glcp: 4.84 (d, J = 7.3, H-1)

β-D-Glcp′: 5.01 (d, J = 7.6, H-1)

α-L-Rhap: 6.37 (brs, H-1), 1.66 (d, J = 6.3, CH3-6) [1]

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

Table 1

C-1

38.8

C-19

34.7

Glc-1

104.9

2

26.3

20

147.0

2

76.9

3

88.5

21

30.2

3

89.9

4

39.5

22

22.0

4

69.9

5

55.3

23

27.7

5

75.1

6

17.7

24

16.5

6

64.5

7

31.4

25

17.3

References

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

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