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Jegosaponin A

Reference work entry

CAS Registry Number: 290809-61-9 Open image in new window

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

Biological source: Styrax japonica [1]

C61H96O27: 1260.613

Mp: 246–248°C [1]

[α]D25−24.6°(c 1.1, MeOH) [1]

IR (film) νmax cm−1: 3400, 1730, 1660, 1245, 1160 [1]

FAB-MSm/z: 1259 [M-H] [1]

1H NMR (600 MHz, J/Hz, C5D5N-CD3OD (1:1)): 3.29 (dd, J = 11.5, 4.0, H-3), 5.50 (m, H-12), 4.44 (m, H-16), 3.01 (dd, J = 13.5, 4.0, H-18), 6.43 (d, J = 10.2, H-21), 6.10 (d, J = 10.2, H-22), 1.20 (s, CH3-23), 1.09 (s, CH3-24), 0.96 (s, CH3-25), 0.99 (s, CH3-26), 1.82 (s, CH3-27), 3.37, 3.61 (d, J = 10.9, H2-28), 1.10 (s, CH3-29), 1.34 (s, CH3-30);

β-D-GlcUAp: 4.78 (d, J = 8.0, H-1), 4.56 (dd, J = 8.8, 8.0, H-2), 4.63 (dd, J = 9.1, 8.8, H-3); β-D-Galp: 5.97 (d, J = 7.7, H-1), 4.52 (dd, J = 8.5, 7.7, H-2); α-L-Rhap: 6.03 (brs, H-1), 1.44 (d, J = 6.0, CH3-6); β-D-Glcp: 5.63 (d, J = 7.1, H-1), Tigloyl: 7.11...

References

  1. 1.
    K. Yoshikawa, H. Hirai, M. Tanaka, S. Arihara, Chem. Pharm. Bull. 48(7), 1093 (2000)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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