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Eupteleasaponin III

Reference work entry

CAS Registry Number: 290809-31-3 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]

C63H100O29: 1320.635

Mp: 232–235°C [1]

[α]D28 + 11.1° (c 0.1, MeOH) [1]

IR (KBr) νmax cm−1: 3432, 1744, 1655, 1075 [1]

FAB-MS (negative ion mode) m/z: 1319 (M-H), 1157 (M-C6H11O5) [1]

FAB-MS (positive ion mode) m/z: 1321 (M + H)+, 1343 (M + Na)+ [1]

1H NMR (500 MHz, J/Hz, C5D5N): 0.87, 1.07, 1.11, 1.21, 1.24 (s, CH3-25, 26, 24, 23, 27), 3.11 (dd, J = 4.9, 13.1, H-18), 3.31 (dd, J = 3.9, 11.6, H-3), 4.70, 4.75 (s, H2-29), 5.44 (brs, H-12); β-D-Xylp: 4.85 (d, J = 5.4, H-1); β-D-Glcp: 4.99 (d, J = 7.9, H-1); β-D-Glcp′: 6.24 (d, J = 7.9, H-1); α-L-Rhap: 6.03 (brs, H-1), 1.63 (d, J = 5.8, CH3-6); α-L-Rhap′: 5.78 (brs, H-1), 1.64 (d, J = 6.2, CH3-6); α-L-Arap: 5.20 (d, J = 7.4, H-1) [1]

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

Table 1

C-1

39.1

C-16

23.8

Xyl-1

104.7...

References

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

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