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Assamsaponin J

Reference work entry

CAS Registry Number: 316157-19-4 Open image in new window

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

Biological source: Camellia sinensis [1]

C66H96O27: 1320.613

Mp: 230.2–232.0°C [1]

[α]D25 −32.2° (c 0.1, MeOH) [1]

IR (KBr) νmax cm−1: 3453, 1718, 1653, 1075 [1]

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

FAB-MS (positive ion mode) m/z: 1343 (M + Na)+, 1365 (M + 2Na-H)+ [1]

1H NMR (500 MHz, J/Hz, C5D5N): 0.77, 0.78, 1.07, 1.15, 1.27, 1.28, 1.50, 2.04, 2.56 (s, CH3-26, 25, 29, 24, 23, 30, 27, Ac-2, Ac-2′), 3.07 (dd, J = 4.0, 14.4, H-18), 3.24 (dd, J = 5.2, 11.6, H-3), 3.48, 3.62 (d, J = 9.2, H2-28), 5.43 (brs, H-16), 5.71 (brs, H-12), 5.87 (d, J = 10.4, H-21), 6.27 (d, J = 10.4, H-22); α-L-Rhap: 5.99 (brs, H-1), 1.51 (d, J = 6.4, CH3-6); β-D-GlcUAp: 4.93 (d, J = 7.6, H-1); β-D-Galp: 5.63 (d, J = 7.6, H-1); α-L-Rhap: 6.04 (d, J = 5.8, H-1); Cinnamoyl: 6.73 (d, J = 16.2, H-2), 7.32 (m,...

References

  1. 1.
    T. Murakami, J. Nakamura, T. Kageura, H. Matsuda, M. Yoshikawa, Chem. Pharm. Bull. 48(11), 1720 (2000)CrossRefGoogle Scholar

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