tert-butyl-[[(3R,8R,9R,10S,13S,14R,17S)-10,13-dimethyl-17-[(2S)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl]oxy]-dimethylsilane | 221454-15-5

• 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: tert-butyl-[[(3R,8R,9R,10S,13S,14R,17S)-10,13-dimethyl-17-[(2S)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl]oxy]-dimethylsilane
• CAS: 221454-15-5
• 化学式: C₃₃H₆₀OSi
• 分子量: 500.924
• InChiKey: CXIGRSVIJKSIQL-SKKSLJNBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  10.42
• 重原子数：
  35
• 可旋转键数：
  8
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.94
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  tert-butyl-[[(3R,8R,9R,10S,13S,14R,17S)-10,13-dimethyl-17-[(2S)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl]oxy]-dimethylsilane 在 四丁基氟化铵 作用下， 以 四氢呋喃 为溶剂， 反应 15.0h， 生成 ent-cholesterol
  参考文献：
  名称：

  Synthesis of ent-cholesterol, the unnatural enantiomer

  摘要：

  Cholesterol is ubiquitious in mammals and plays an important role in human health. The unique relationship between enantiomers makes ent-cholesterol, the unnatural enantiomer of cholesterol, a valuable new probe of cholesterol function in biochemical systems. We report the first enantioselective total synthesis of ent-cholesterol.

  DOI：

  10.1021/jo00035a036
• 作为产物：
  描述：

  (-)-3β-tert-Butoxy-3aβ-methyl-1,1,3,3a,4,5,8,9,9aβ,9bα-decahydro-6-<2-(2-methyl-1,3-dioxolan-2-yl)ethyl>-7H-benzinden-7-one 在 盐酸 、 4-二甲氨基吡啶 、 二环己烷并-18-冠醚-6 、 2,2'-联吡啶 、 9-borabicyclo[3.3.1]nonane dimer 、 4 A molecular sieve 、 potassium tert-butylate 、 氨 、 氢化钾 、 lithium 、 2,6-二叔丁基-4-甲基苯酚钾盐 、 lithium tri-t-butoxyaluminum hydride 、 三乙胺 、 pyridinium chlorochromate 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 甲苯 、 叔丁醇 为溶剂， 反应 65.5h， 生成 tert-butyl-[[(3R,8R,9R,10S,13S,14R,17S)-10,13-dimethyl-17-[(2S)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl]oxy]-dimethylsilane
  参考文献：
  名称：

  Synthesis of ent-cholesterol, the unnatural enantiomer

  摘要：

  Cholesterol is ubiquitious in mammals and plays an important role in human health. The unique relationship between enantiomers makes ent-cholesterol, the unnatural enantiomer of cholesterol, a valuable new probe of cholesterol function in biochemical systems. We report the first enantioselective total synthesis of ent-cholesterol.

  DOI：

  10.1021/jo00035a036

文献信息

• A new method for the preparation of ent-cholesterol from ent-testosterone
  作者：A.Sampath Kumar、Douglas F. Covey

  DOI：10.1016/s0040-4039(98)02588-x

  日期：1999.1

  An efficient total synthesis of the enantiomer of cholesterol is reported. The enantiomer of testosterone was prepared and converted into a C-21 3-silyloxy-Delta(5,17(20))-diene according to literature procedures. The additional five carbon atoms of the cholesterol side chain were introduced by an ene reaction. Selective hydrogenation of the resultant Delta(16) double bond and removal of the 22-hydroxyl group by a mesylation and demesylation sequence gave ent-cholesterol in 9.7% overall yield from ent-testosterone (C) 1999 Elsevier Science Ltd. All rights reserved.