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Fargoside A

Reference work entry

CAS Registry Number: 365541-51-1 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: Holboellia fargesii [1]

C40H64O13: 752.434

[α]D25 + 24.4° (c 1.0, MeOH) [1]

MALDI-TOF-MSm/z: 775 [M + Na]+, 791 [M + K]+ [1]

HR-FAB-MS (negative ion) m/z: 751.4263 [M-H] [1]

IR (KBr) νmax cm−1: 3423, 2925, 1685, 1466, 1388, 1202, 1045 [1]

1H NMR (500 MHz, J/Hz, C5D5N): 3.32 (dd, J = 11.9, 4.1, H-3), 0.74 (d, J = 11.0, H-5), 5.54 (brt, 3.2, H-12), 3.36 (dd, J = 13.7, 4.1, H-18), 1.31 (s, CH3-23), 1.10, 0.84, 1.00, 1.28, 1.58 (s, CH3-24, 25, 26, 27, 30)

β-D-Glcp: 4.92 (d, J = 7.8, H-1), 4.15 (H-2), 4.31 (t, J = 8.7, H-3), 4.17 (H-4), 3.93 (m, H-5), 4.35 (dd, J = 12.0, 6.5, H-6), 4.54 (dd, J = 12.0, 2.0, H-6)

β-D-Xylp: 5.27 (d, J = 6.9, H-1), 4.12 (H-2), 4.13 (H-3), 4.24 (m, H-4), 3.70 (dd, J = 11.0, 10.5, H-5), 4.39 (dd, J = 11.0, 5.0, H2-...

References

  1. 1.
    H. Fu, K. Koike, Q. Zheng, K.-S. Mitsunaga, Z. Jia, T. Nikaido, W. Lin, D. Guo, L. Zhang, Chem. Pharm. Bull. 49(8), 999 (2001)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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