CAS Registry Number: 661474-66-4 Open image in new window
Taxonomy: Physicochemical and Biological Properties of Phytoecdysteroids – Phytoecdysteroids and Their Conjugates
Biological sources: Cyanotis arachnoidea [1]
C19H26O6: 350.1729
Mp: 251–253°C [1]
[α]D20 + 1.07° (c, MeOH) [1]
EI-MS m/z: 350 [M]+ (18), 332 [M-H2O]+ (77), 314 [M-2H2O]+ (25), 304 [M-H2O–CO]+ (23), 286 [M-2H2O–CO]+ (21), 271 [M-2H2O–CO–CH3]+ (22), 249 (35), 227 (64), 185 (93), 161 (48), 91 (97), 77 (63), 69 (41), 55 (100), 43 (90) [1]
HR-EI-MS m/z: for C19H26O6 [M]+ calcd. 350.1729, found 350.1718 [1]
1H NMR (J/Hz, C5D5N): 3.41 (dd, J = 4.0, 12.6, Ha-1), 2.02 (m, He-1), 4.54 (m, Ha-2), 4.54 (m, He-3), 3.08 (m, H-5), 6.32 (d, J = 2.2, H-7), 3.82 (dd, J = 2.2, 8.6, H-9), 4.21 (m, Ha-11), 2.46 (m, Ha-12), 3.05 (m, He-12), 2.62 (m, Ha-15), 2.62 (m, Hb-15), 2.24 (m, Ha-16), 2.31 (m, Hb-16), 0.90 (s, CH3-18), 1.29 (s, CH3-19) [1]
Table 1
C-1 |
39.7 |
C-8 |
161.3 |
C-15 |
33.7 |
2 |
68.1 |
9 |
43.5 |
16 |
29.1 |
3 |
68.0 |
10 |
39.8 |
References
- 1.C.Y. Tan, J.H. Wang, X. Li, J. Asian Nat. Prod. Res. 5, 237 (2003)CrossRefGoogle Scholar