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Fargoside B

Reference work entry

CAS Registry Number: 365541-52-2 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]

C46H74O18: 914.487

[α]D22 + 39.6° (c 1.0, MeOH) [1]

MALDI-TOF-MSm/z: 937 [M + Na]+, 953 [M + K]+ [1]

HR-FAB-MS (negative ion) m/z: 913.4787 [M-H] [1]

IR (KBr) νmax cm−1: 3414, 2930, 1689, 1459, 1380, 1165, 1061 [1]

1H NMR (500 MHz, J/Hz, C5D5N): 3.35 (H-3), 0.83 (d, J = 12.6, H-5), 5.53 (brt, J = 3.3, H-12), 3.35 (H-18), 1.46 (s, CH3-23), 4.12 (H2-24), 0.71, 0.90, 1.20, 1.58 (s, CH3-25, 26, 27, 30)

β-D-Glcp: 4.80 (d, J = 7.4, H-1), 4.23 (H-2), 4.21 (H-3), 4.09 (H-4), 3.82 (m, H-5), 4.28, 4.44 (dd, J = 10.4, 1.6, H2-6)

β-D-Fucp: 5.50 (d, J = 7.5, H-1), 4.32 (dd, J = 9.7, 7.5, H-2), 3.96 (dd, J = 9.7, 3.0, H-3), 3.91 (d, J = 3.0, H-4), 3.66 (q, J = 6.4, H-5), 1.51 (d, J = 6.4, CH3-6)

α-L-Arap: 5.21 (d, J = 7.5,...

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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