Scandenoside R₃

CAS Registry Number: 114637-77-3

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Cucurbitane Type – Scandenogenin A

Biological source: Hemsleya panacis-scandens [1]

C₄₂H₆₈O₁₄: 796.460

[α] ²⁴_D + 48.0° (c 0.97, MeOH) [1]

IR (nujol) ν_max cm⁻¹: 3350, 1680 (C = 0) [1]

¹ H NMR (100 MHz, J/Hz, C₅D₅N): anomeric: 4.79 (d, J = 8.0, H-1 of Glc), 4.82 (d, J = 7.0, H-1 of Glc′) [1]

¹ H NMR (270 MHz, J/Hz, CDCl₃): 3.47 (t, like, J = 6.0, H-3), 5.67 (brd, J = 6.7, H-6), 2.54, 2.96 (d, J = 14.0, H₂-12), 0.93 (s, CH₃-18), 1.03 (s, CH₃-19), 1.29 (d, J = 6.5, H-21), 5.39 (t, J = 6.5, H-24), 3.99 (s, CH₃-26), 1.67 (s, CH₃-27), 1.05 (s, CH₃-28), 1.12 (s, CH₃-29), 1.17 (s, CH₃-30) [1]

¹³ C NMR (C₅D₅N): [1]

Table 1

C-1	22.1	C-16	22.1	Glc-1	107.2
2	28.3	17	51.4	2	75.1
3	87.3	18	19.0	3	78.5
4	41.9	19	20.2	4	71.7
5	141.2	20	73.8	5	78.1
6	118.5	21	25.9	6	62.8
7	24.0	22	44.6	Glc′-1	103.4
8	43.3	23	23.1	2	75.1
9	48.8	24	128.6	3	78.5
10	35.9	25	132.2	4	71.7...