Achyranthesterone A

CAS Registry Number: 864753-99-1 Open image in new window

Taxonomy: Physicochemical and Biological Properties of Phytoecdysteroids – Phytoecdysteroids and Their Conjugates

Biological sources: Achyranthes bidentata [1], Froelichia floridana [2]

C₂₇H₄₄O₈: 496.3036

Mp: 300°C [1]

[α]_D³⁰ + 13.0° (0.001; MeOH) [1]

UV λ_max^MeOH nm: 240.8 [1]

ESI-MS m/z: 497.1 [M + H]⁺, 479.0 [M + H–H₂O]⁺, 461.0 [M + H–2H₂O]⁺, 443.1 [M + H–3H₂O]⁺, 425.1 [M + H–4H₂O]⁺ [1]

¹H NMR (J/Hz, C₅D₅N): 1.90 (m, Ha-1), 2.10 (m, He-1), 4.18 (m, Ha-2), 4.22 (m, He-3), 1.88 (m, Ha-4), 1.98 (m, He-4), 3.00 (dd, J = 3.0, 12.0, H-5), 6.25 (d, J = 3.0, H-7), 3.60 (m, Ha-9), 1.68 (m, Ha-11), 1.80 (m, He-11), 2.16 (m, Ha-12), 1.96 (m, He-12), 2.56 (m, Ha-15), 1.96 (m, He-15), 2.51 (m, Ha-16), 2.08 (m, Hb-16), 3.11 (m, H-17), 1.20 (s, CH₃-18), 1.02 (s, CH₃-19), 4.42 and 4.39 (d, J = 19.2, CH₂OH-21), 4.08 (m, H-22), 2.34 (m, Ha-23), 2.18 (m, Hb-23), 2.32 (m, Ha-24), 1.84 (m, Hb-24), 1.35 (s, CH₃-26), 1.35 (s, CH₃-27) [1]