3β,6α-Diacetoxy-5α-hydroxy-ergosta-7,22-dien | 33824-22-5

• 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
• 英文名称: 3β,6α-Diacetoxy-5α-hydroxy-ergosta-7,22-dien
• CAS: 33824-22-5
• 化学式: C₃₂H₅₀O₅
• 分子量: 514.746
• InChiKey: BYQRZDXXAFUZOU-WTSPNKNZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.64
• 重原子数：
  37.0
• 可旋转键数：
  6.0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.81
• 拓扑面积：
  72.83
• 氢给体数：
  1.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  3β,6α-Diacetoxy-5α-hydroxy-ergosta-7,22-dien 在 mercury(II) diacetate 、 溶剂黄146 作用下， 生成 3β,6α-Diacetoxy-5α-hydroxyergosta-7,9(11),22-trien
  参考文献：
  名称：

  Permanganate oxidation of ergosterol

  摘要：

  DOI：

  10.1021/jo01335a008
• 作为产物：
  描述：

  ergost-6,22-diene-3β,5α,8α-triol 在 吡啶 、 马来酸酐 、 苯 作用下， 生成 3β,6α-Diacetoxy-5α-hydroxy-ergosta-7,22-dien
  参考文献：
  名称：

  INVISIBLE TRADE, INVISIBLE TRAVELLERS: THE MAPUTO CORRIDOR SPATIAL DEVELOPMENT INITIATIVE AND INFORMAL CROSS-BORDER TRADING

  摘要：

  DOI：

  10.1080/03736245.2001.9713727

文献信息

• Permanganate Oxidation of Ergosterol
  作者：Mary Fieser、Adolfo Quilico、Alex Nickon、William E. Rosen、E. James Tarlton、Louis F. Fieser

  DOI：10.1021/ja01112a057

  日期：1953.8
• EHL Film Thickness Limitation Theory Under a Limiting Shear Stress
  作者：Yongbin Zhang、Shizhu Wen

  DOI：10.1080/10402000208982584

  日期：2002.1

  It is numerically shown that the elastohydrodynamic lubrication (EHL) film thickness has a limit under an assumed limiting shear stress of the contact-lubricant interface in isothermal Pure rolling line contacts. The prediction of the central film thickness limit is made, and well matches experiments. The present theory shows that, in elastohydrodynamic line contacts, the central film thickness is of molecular scale and part of the contact area is in non-continuum film lubrication when the equivalent cylinder curvature radius is less than the critical one. This critical radius depends on the load and the contact-lubricant interfacial limiting shear stress at low pressures.
• Seasonal variations in the community structure of aquatic organisms in a paddy field under a long-term fertilizer trial
  作者：Masatsugu Yamazaki、Yukihiro Hamada、Takeo Ibuka、Takashi Momii、Makoto Kimura

  DOI：10.1080/00380768.2001.10408422

  日期：2001.9

  To estimate the effect of fertilizers on aquatic organisms ranging in size from 30 mum to 2 cm in a Japanese paddy field under a long-term fertilizer trial (the plots without fertilizers, with chemical fertilizers only, and with chemical fertilizers as well as two levels (7.5 and 22.5 tons ha(-1)) of rice straw compost), we collected the floodwater samples once every 10 d during the cropping season throughout 3 y and mainly classified aquatic organisms in the floodwater at the order level. The frequency of the presence of Chlorococcales, Lemanaceae, Euglenida, Oligotrichida, Pharyngophorida, Sessilida, Turbellaria, Podocopida, and Cyclopoida was significantly different among the plots, while the maximum population density was significantly different for Cladocera and Cyclopoida among the plots. The effects of the sampling year on the frequency of presence and the maximum population density were also observed. The floodwater samples after midseason drainage in three plots with fertilizer application differed from the samples in the plot without fertilizer application in the community structure of aquatic organisms. Principal component analysis showed that Lemanaceae, Pharyngophorida, and Turbellaria were important components in the floodwater samples after midseason drainage in the three plots with fertilizer application. Although Cladocera appeared more abundantly after midseason drainage in the plot without fertilizers and the plot with chemical fertilizers only, it appeared more abundantly before midseason drainage in the two plots with composts. Shannon-Weaver's index of diversity (H') was higher in the three plots with fertilizers than in the plot without fertilizers. The effect of fertilizer application on the community structure and the diversity of aquatic organisms was more conspicuous than that of the sampling year.
• Windaus; Riemann, Hoppe-Seyler's Zeitschrift fur Physiologische Chemie, 1942, vol. 274, p. 206,210
  作者：Windaus、Riemann

  DOI：——

  日期：——
• Oxidation of ergosterol acetate with chromic anhydride
  作者：E. V. Yablonskaya、G. M. Segal'

  DOI：10.1007/bf00564742

  日期：1971.7