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Eupteleasaponin VII

Reference work entry

CAS Registry Number: 290809-40-4 Open image in new window

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

Biological source: Euptelea polyandra [1]

C53H82O22: 1070.529

Mp: 168–172°C (CHCl3-MeOH) [1]

[α]D26 + 14.6° (c 0.1, MeOH) [1]

IR (KBr) νmaxcm−1: 3432, 1775, 1654, 1068 [1]

FAB-MS (negative ion mode) m/z: 1069 (M-H), 923 (M-C6H11O4), 761 (M-C12H23O9) [1]

FAB-MS (positive ion mode) m/z: 1093 (M + Na)+, 1115 (M + 2Na-H)+ [1]

1H NMR (500 MHz, J/Hz, C5D5N): 0.90, 1.10, 1.13, 1.18, 1.25 (s, CH3-25, 26, 24, 27, 23), 2.35 (dd, J = 3.7, 13.8, H-18), 3.01 (brs, H-11), 3.14 (d, J = 2.3, H-12), 3.38 (dd, J = 4.3, 11.9, H-3), 4.71, 4.74 (s, H2-29)

β-D-Glcp: 4.83 (d, J = 7.3, H-1)

β-D-Galp: 5.04 (d, J = 7.9, H-1)

α-L-Rhap: 6.37 (brs, H-1), 1.67 (d, J = 6.1, CH3-6)

α-L-Rhap′: 5.69 (brs, H-1), 1.69 (d, J = 6.1, CH3-6) [1]

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

Table 1

C-1

38.8

C-16

32.3

Glc-1

104.9

Gal-1

103.7

2

References

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

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