Ginsenoside-Rh₅

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Dammarane Type – 3β,6α,12β,24ξ-Tetrahydroxy-dammar-20(22),25-diene

Biological source: Panax ginseng [1]

C₃₆H₆₀O₉: 636.423

[α] ²¹_D + 20.8° (c 0.1, MeOH) [1]

HR-FAB-MS m/z: 659.4135 [M + Na]⁺ [1]

¹ H NMR (500 MHz, J/Hz, C₅D₅N): 0.84, 1.06, 1.24, 1.62, 1.83, 1.88, 2.09 (s, CH₃-30, 19, 18, 29, 21, 27, 28), 2.41, 2.55 (m, H-23), 3.54 (dd, J = 5.0, 11.5, H-3), 3.95 (m, H-12), 4.37 (dd, J = 3.5, 8.5, H-24), 4.47 (dd, J = 3.0, 10.5, H-6), 5.28, 4.98 (brs, H₂-26), 5.69 (t-like, J = 7.5, H-22)

β-D-Glcp: 5.05 (d, J = 8.0, H-1), 4.12 (t, J = 8.0, H-2), 4.27 (t-like, J = 8.5, H-3), 4.23 (dd, J = 8.5, H-4), 4.39 (dd, J = 5.5, 11.0, H-6), 4.56 (dd, J = 2.5, 12.0, H-6) [1]

¹³ C NMR (C₅D₅N): [1]

Table 1

C-1	39.5	C-16	26.8	Glc-1	106.1
2	28.0	17	51.0	2	75.5
3	78.6	18	17.4	3	79.7
4	40.2	19	17.7	4	71.9
5	61.5	20	142.4	5	78.2
6	80.1	21	13.2	6	63.1
7	45.4	22	122.2
8	41.4	23	35.3
9	50.5	24	75.2
10	39.8...