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Eupteleasaponin I

Reference work entry

CAS Registry Number: 290809-29-9 Open image in new window

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

Biological source: Euptelea polyandra [1]

C52H82O21: 1042.534

Mp: 201–203°C [1]

[α]D28 + 17.7° (c 0.1, MeOH) [1]

IR (KBr) νmax cm−1: 3432, 1744, 1680, 1075 [1]

FAB-MS (negative ion mode) m/z: 1041 (M-H), 895 (M-C6H11O4), 879 (M-C6H11O5) [1]

FAB-MS (positive ion mode) m/z: 1065 (M + Na)+ [1]

1H NMR (500 MHz, J/Hz, C5D5N): 0.86, 1.06, 1.10, 1.20, 1.24 (s, CH3-25, 26, 24, 23, 27), 1.61 (d, J = 5.8, CH3-6″′), 3.10 (dd-like, H-18), 3.30 (dd, J = 3.5, 11.3, H-3), 4.68, 4.74 (s, H2-29), 5.43 (brs, H-12)

β-D-Xylp: 4.87 (d, J = 5.2, H-1)

β-D-Glcp: 5.06 (d, J = 7.6, H-1)

β-D-Glcp′: 6.23 (d, J = 7.0, H-1)

α-L-Rhap: 6.05 (brs, H-1) [1]

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

Table 1

C-1

39.1

C-16

23.7

Xyl-1

104.7

Rha-1

101.9

2

26.6

17

47.3

2

74.8

2

72.3

3

88.2

18

47.7

3

81.8

3

72.6

4

39.6

19

41.7

4

68.1

4

73.9...

References

  1. 1.
    M. Yoshikawa, T. Murakami, H. Oominami, H. Matsuda, Chem. Pharm. Bull. 48(7), 1045 (2000)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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