埃克甾酮 B | 18069-14-2

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 类固醇和类固醇衍生物
• 中文名称: 埃克甾酮 B
• 中文别名: 脱皮甾酮B；(20R,22R)-2Β,3Β,5Α,14Α,20,22,25-七羟基胆甾-7-烯-6-酮；埃克甾酮B；(2R,22R)-2Β,3Β,5Α,14Α,2,22,25-七羟基胆甾-7-烯-6-酮
• 英文名称: polypodine B
• 英文别名: polypodin B；2beta,3beta,5beta,14,20,22R,25-Heptahydroxycholest-7-en-6-one；(2S,3R,5S,9R,10R,13R,14S,17S)-2,3,5,14-tetrahydroxy-10,13-dimethyl-17-[(2R,3R)-2,3,6-trihydroxy-6-methylheptan-2-yl]-1,2,3,4,9,11,12,15,16,17-decahydrocyclopenta[a]phenanthren-6-one
• CAS: 18069-14-2；109786-20-1；148054-07-3
• 化学式: C₂₇H₄₄O₈
• 分子量: 496.642
• InChiKey: GMFLGNRCCFYOKL-ACCCYTKYSA-N

物化性质

• 熔点：
  252-254 °C(Solv: acetone (67-64-1))
• 沸点：
  732.7±60.0 °C(Predicted)
• 密度：
  1.33±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -0.3
• 重原子数：
  35
• 可旋转键数：
  5
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.888
• 拓扑面积：
  159
• 氢给体数：
  7
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  埃克甾酮 B 在 [双(三氟乙酰氧基)碘]苯 作用下， 以 甲醇 为溶剂， 反应 60.0h， 以60.2%的产率得到2β,3β,5β,14α-Tetrahydroxy-Δ⁷-pregnen-6,20-dion
  参考文献：
  名称：

  Side-chain cleaved phytoecdysteroid metabolites as activators of protein kinase B

  摘要：

  Phytoecdysteroids exert their non-hormonal anabolic and adaptogenic effects in mammals, including humans, through a partially revealed mechanism of action involving the activation of protein kinase B (Akt). We have recently found that poststerone, a side-chain cleaved in vivo metabolite of 20-hydroxyecdysone, exerts potent anabolic activity in rats.Here we report the semi-synthetic preparation of a series of side-chain cleaved ecdysteroids and their activity on the Akt phosphorylation in murine skeletal muscle cells. Twelve C-21 ecdysteroids including 8 new compounds were obtained through the oxidative side-chain cleavage of various phytoecdysteroids, or through the base-catalyzed autoxidation of poststerone. The complete H-1 and C-13 NMR spectroscopic assignments of the new compounds are presented. Among the tested compounds, 9 could activate Akt stronger than poststerone revealing that side-chain cleaved derivatives of phytoecdysteroids other than 20-hydroxyecdysone are valuable bioactive metabolites. Thus, our results suggest that the expectable in vivo formation of such compounds should contribute to the bioactivity of herbal preparations containing ecdysteroid mixtures.

  DOI：

  10.1016/j.bioorg.2018.10.049
• 作为产物：
  描述：

  (20R,22R)-6-oxo-2β,3β,5,14α,20,25-hexahydroxy-5β-cholest-7-en-22-yl acetate 在 potassium hydrogencarbonate 作用下， 以 甲醇 为溶剂， 反应 3.0h， 以5 mg的产率得到埃克甾酮 B
  参考文献：
  名称：

  Phytoecdysteroids of plants of the genus Melandrium I. Polypodin B 22-acetate from Melandrium turkestanicum

  摘要：

  DOI：

  10.1007/bf00598992

文献信息

• ——
  作者：V. N. Odinokov、R. G. Savchenko、S. R. Nazmeeva、I. V. Galyautdinov、L. M. Khalilov

  DOI：10.1023/a:1021377207689

  日期：——

  A new method was developed for trimethylsilylation of alcohols by the reactions with (trifluoromethyl)trimethylsilane in the presence of tetrabutylammonium fluoride. The reactions of ecdysteroids (20-hydroxyecdysone, its 20,22-mono- and 2,3:20,22-diacetonides, and polypodine B) and carbohydrates (D-gluco-, D-galacto-, and D-xylopyranoses) afforded the corresponding persilylated derivatives.
• Significant Activity of Ecdysteroids on the Resistance to Doxorubicin in Mammalian Cancer Cells Expressing the Human ABCB1 Transporter
  作者：Ana Martins、Noémi Tóth、Attila Ványolós、Zoltán Béni、István Zupkó、József Molnár、Mária Báthori、Attila Hunyadi

  DOI：10.1021/jm300424n

  日期：2012.6.14

  Multidrug resistance (MDR) is a major cause of failure of cancer chemotherapy. Fifty-eight ecdysteroids, herbal analogues of the insect molting hormone and their semisynthetic derivatives, were tested for their activity against L5178 mouse T-cell lymphoma cells (non-MDR) and their subcell line transfected with pHa MDR1/A retrovirus overexpressing the human ABCB1 efflux pump (MDR cell line). The compounds showed very low antiproliferative activities but modulated the efflux of rhodamine 123 mediated by the ABCB1 transporter. Roughly depending on the polarity, mild to strong synergism or antagonism was observed by combining ecdysteroids with doxorubicin, and specific structure-activity relationships were also found. Our results show the effect of ecdysteroids on MDR cancer cells for the first time. Less polar derivatives may serve as valuable leads toward a potent and safe resistance modulator. Biological significance of the resistance-increasing activity of the most abundant phytoecdysteroids including 20-hydroxyecdysone is yet to be clarified.
• Phytoecdysteroids of plants of the genusRhaponticum polypodin B 22-O-benzoate fromRhaponticum carthamoides
  作者：Z. T. Sadykov、N. Sh. Ramazanov、Z. Saatov

  DOI：10.1007/bf02249636

  日期：1997.11