(3beta,5alpha)-麦角甾-14-烯-3-醇 | 632-31-5

• 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
• 中文名称: (3beta,5alpha)-麦角甾-14-烯-3-醇
• 英文名称: 5α-ergost-14-en-3β-ol
• 英文别名: (10S)-3c-Hydroxy-10r.13c-dimethyl-17c-((1R:4S)-1.4.5-trimethyl-hexyl)-(5tH.8cH.9tH)-Δ¹⁴-tetradecahydro-1H-cyclopenta[a]phenanthren；3β-Hydroxy-10.13-dimethyl-17β-((1R:4S)-1.4.5-trimethyl-hexyl)-5α-gonen-(14)；24β_F-Methyl-5α-cholesten-(14)-ol-(3β)；(24S)-24-Methyl-5α-cholesten-(14)-ol-(3β)；5α-Ergosten-(14)-ol-(3β)；beta-Ergostenol；(3S,5S,8R,9S,10S,13R,17R)-17-[(2R,5S)-5,6-dimethylheptan-2-yl]-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-ol
• CAS: 632-31-5
• 化学式: C₂₈H₄₈O
• 分子量: 400.689
• InChiKey: TZMNZSROTXXMLX-MQBMRGBGSA-N

物化性质

• 熔点：
  141°
• 比旋光度：
  D20 +21.2° (c = 0.9 in chloroform)
• 沸点：
  488.3±44.0 °C(Predicted)
• 密度：
  0.98±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  8.7
• 重原子数：
  29
• 可旋转键数：
  5
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.93
• 拓扑面积：
  20.2
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (3beta,5alpha)-麦角甾-14-烯-3-醇 在 氯仿 、 溴 、 溶剂黄146 、 铂 作用下， 生成 菜油甾醇
  参考文献：
  名称：

  230.固醇类的研究。第十五部分。α-和β-麦芽固醇与它们衍生的烃的关系

  摘要：

  DOI：

  10.1039/jr9320001710
• 作为产物：
  描述：

  Ergost-14-en-3β-yl-acetat 在 氢氧化钾 作用下， 生成 (3beta,5alpha)-麦角甾-14-烯-3-醇
  参考文献：
  名称：

  The Role of Radial Clearance on the Performance of Foil Air Bearings

  摘要：

  Load capacity tests were conducted to determine how radial clearance variations affect the load capacity coefficient of foil air bearings. Two Generation III foil air bearings with the same design but possessing different initial radial clearances were tested at room temperature against an as-ground PS304 coated journal operating at 30000 rpm. Increases in radial clearance were accomplished by reducing the journal's outside diameter via an in-place grinding system. Front each load capacity test the bearing load capacity coefficient was calculated from the rule-of-thumb (ROT) model developed for foil air bearings.The test results indicate that, in terms of the load capacity coefficient, radial clearance has a direct impact on the performance of the foil air bearing. Each test bearing exhibited an optimum radial clearance that resulted in a maximum load capacity coefficient. Relative to this optimum value are two separate operating regimes that are governed by different modes of failure. Bearings operating with radial clearances less than the optimum exhibit load capacity coefficients that are a strong function of radial clearance and are prone to a thermal runaway failure mechanism and bearing seizure. Conversely, a bearing operating with a radial clearance m,ice the optimum suffered only a 20% decline in its maximum load capacity coefficient and did not experience any thermal management problems. However, it is unknown to what degree these changes in radial clearance had on other performance parameters, such (is the stiffness and damping properties of the bearings.

  DOI：

  10.1080/10402000208982578

文献信息

• Linear polyethylenimine-sterol conjugates for gene delivery
  申请人：The University of Utah Research Foundation

  公开号：US20040137050A1

  公开（公告）日：2004-07-15

  Linear polyethylenimine was modified with sterols, such as cholesterol, in three different geometries: linear shaped (L), T-shaped (T), and a combined linear- and T-shaped (LT), to result in linear polyethylenimine-sterol conjugates. These conjugates were mixed with nucleic acids to form complexes for delivery of the nucleic acids into cells. Mammalian cells transfected with these complexes showed protein expression levels higher than linear polyethylenimine alone, and twice that of branched polyethylenimine, but without any significant loss in cell viability. Methods of making these compositions and methods of using them for gene delivery are also described.

  线性聚乙烯亚胺被固醇（如胆固醇）以三种不同的几何形状进行改性：线性形状（L）、T形状（T）和线性和T形状的组合（LT），从而形成线性聚乙烯亚胺-固醇共轭物。这些共轭物与核酸混合形成复合物，用于将核酸传递到细胞中。转染这些复合物的哺乳动物细胞显示出比单独使用线性聚乙烯亚胺更高的蛋白表达水平，且比支化聚乙烯亚胺高出一倍，但没有任何显著的细胞存活率损失。还描述了制备这些组合物的方法以及将其用于基因传递的方法。
• Implants for localized drug delivery and methods of use thereof
  申请人：The Regents of the University of California

  公开号：US10912933B2

  公开（公告）日：2021-02-09

  Provided herein is an implant for delivering a hydrophobic active agent to a target tissue. The implant may include a scaffold defining a first surface and a second surface opposite the first surface, wherein the scaffold is substantially impermeable to a hydrophobic active agent, and a silicone tubing having a wall permeable to the active agent, wherein a first length of the silicone tubing is affixed to the first surface of the scaffold, wherein the two ends of the silicone tubing extend from the first surface, and wherein a path outlined by a second length of the tubing within the first length is circuitous. Also provided is a method of using the implant to locally deliver a hydrophobic active agent to a target tissue, and kits that find use in performing the present method.

  本文提供了一种向目标组织输送疏水活性剂的植入物。该植入物可包括界定第一表面和与第一表面相对的第二表面的支架，其中支架基本上不渗透疏水活性剂，以及具有可渗透活性剂壁的硅胶管，其中硅胶管的第一长度贴在支架的第一表面上，其中硅胶管的两端从第一表面延伸，并且第一长度内的第二长度的硅胶管所勾勒的路径是迂回的。此外，还提供了一种使用植入物向目标组织局部递送疏水活性剂的方法，以及可用于实施本方法的试剂盒。
• 158. The application of the method of molecular rotation differences to steroids. Part IV. Optical anomalies
  作者：D. H. R. Barton、J. D. Cox

  DOI：10.1039/jr9480000783

  日期：——
• Beta-Ergostenol. II
  作者：Frederick W. Heyl、Merrill C. Hart、Harold Emerson

  DOI：10.1021/ja01334a040

  日期：1933.7
• 51. The application of the method of molecular rotation differences to steroids. Part VII. Olefinic unsaturation at the 8(9)-position
  作者：D. H. R. Barton、J. D. Cox

  DOI：10.1039/jr9490000214

  日期：——