Chilianoside K

CAS Registry Number: 222541-65-3

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Dammarane Type – 1β,2α,3β,20(R),25-Pentahydroxy-dammar-23-ene

Biological source: Rhoiptelea chiliantha [1]

C₃₆H₆₂O₁₀: 654.434

[α] ¹⁵_D + 10.3° (c 0.2, MeOH) [1]

FAB-MS m/z: 653 (M-H)⁻ [1]

¹ H NMR (300 MHz, J/Hz, CD₃OD): 0.89, 0.90, 0.98, 1.00, 1.08, 1.08, 1.27, 1.27 (s, CH₃-30, 29, 28, 21, 19, 18, 26, 27), 3.05 (d, J = 9.0, H-3), 3.16 (d, J = 9.0, H-1), 3.51 (t, J = 9.0, H-2), 5.59 (d, J = 16.0, H-24), 5.71 (dt, J = 16.0, 7.0, H-23)

β-D-Glcp: 4.33 (d, J = 8.0, H-1), 3.88 (dd, J = 2.0, 12.0, Ha-6), 3.66 (dd, J = 5.0, 12.0, Hb-6) [1]

¹³ C NMR (75 MHz, CD₃OD): [1]

Table 1

C-1	84.7	C-16	26.0	Glc-1	106.2
2	73.2	17	50.9	2	75.5
3	92.6	18	16.4	3	78.1
4	41.1	19	14.5	4	71.4
5	54.5	20	76.5	5	78.2
6	18.1	21	23.8	6	62.5
7	36.3	22	45.9
8	42.3	23	123.8
9	53.3	24	142.1
10	44.3	25	71.2
11	25.2	26	29.9
12	28.8	27	30.0
13	43.1	28	28.6
14	51.2	29	17.6
15	32.2	30	16.8...