Basellasaponin C

CAS Registry Number: 354552-04-8

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Oleanene Type – Gypsogenic Acid

Biological source: Basella rubra [1]

C₄₇H₆₈O₂₂: 984.420

Mp: 230–232°C [1]

[α] ²⁵_D + 42.1° (c 0.1, MeOH) [1]

IR (KBr) ν_max cm⁻¹: 3426, 1737, 1076, 1036 [1]

RH-FAB-MS m/z: 1007.4132 [M + Na]⁺, 983 [M-H]⁻, 821 [M-C₆H₁₁O₅]⁻[1]

¹ H NMR (270 MHz, J/Hz, C₅D₅N): 4.62 (m, H-3), 5.40 (dd-like, H-12), 3.17 (dd-like, H-18), 0.86 (s, CH₃-25, 30), 0.89, 1.07, 1.23, 1.51 (s, CH₃-29, 26, 27, 24)

β-D-GlcUAp: 5.19 (d, J = 7.6, H-1); 3-oxoperuvic acid: 5.97 (s, H-3″), glycolic acid: 4.79 (s, H₂-2″′)

β-D-Glcp: 6.31 (d, J = 7.9, H-1) [1]

¹³ C NMR: [1]

Table 1

C-1	38.6	C-16	23.6	GlcUA-1	106.5
2	26.1	17	46.9	2	71.8
3	85.8	18	41.7	3	72.3
4	53.2	19	46.1	4	70.1
5	52.1	20	30.8	5	75.2
6	21.2	21	34.0	6	171.9
7	32.8	22	32.5	3-oxo-PA-1	171.4
8	40.2	23	180.1	2	94.1
9	48.0	24	12.6	3	97.9
10	36.6	25	15.9	GA-1	172.4
11	23.3	26	17.3	2	64.7
12	122.8