ethyl 3α,7α,12α-tris(formyloxy)-25-carboxy-5β-cholestan-26-oate | 264128-71-4

• 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: ethyl 3α,7α,12α-tris(formyloxy)-25-carboxy-5β-cholestan-26-oate
• 英文别名: diethyl 2-methyl-2-[(4R)-4-[(3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-3,7,12-triformyloxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentyl]propanedioate
• CAS: 264128-71-4
• 化学式: C₃₅H₅₄O₁₀
• 分子量: 634.808
• InChiKey: FXZXGJJVASNTFY-DCHKRXSRSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  8
• 重原子数：
  45
• 可旋转键数：
  17
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.86
• 拓扑面积：
  132
• 氢给体数：
  0
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  ethyl 3α,7α,12α-tris(formyloxy)-25-carboxy-5β-cholestan-26-oate 在 sodium hydroxide 、 lithium chloride 作用下， 以 二甲基亚砜 、 N,N-二甲基甲酰胺 为溶剂， 反应 1.0h， 生成 (3a,5b,7a,12a)-3,7,12-三羟基-胆甾烷-26-酸
  参考文献：
  名称：

  A convenient synthesis of 5β-cholestan-26-oic and 5β-cholestan-26,27-dioic acids

  摘要：

  A new method for the preparation of 5 beta-cholestan-26-oic acids 7 and their analogs is described. The key steps in the synthesis are: iodination of bis- and tris-formyloxy-5 beta-cholan-24-ols 3; nucleophilic substitution of iodides 4 with diethyl sodiomalonate; complete alkaline hydrolysis of esters 5; and subsequent decarboxylation of geminal diacids 6 in DMSO. (C) 2000 Elsevier Science Inc. All rights reserved.

  DOI：

  10.1016/s0039-128x(99)00099-9
• 作为产物：
  描述：

  3α,7α,12α-triformyloxy-5β-cholan-24-ol 在 咪唑 、 碘 、 sodium hydride 、 三苯基膦 作用下， 以 四氢呋喃 、 二甲基亚砜 为溶剂， 反应 7.0h， 生成 ethyl 3α,7α,12α-tris(formyloxy)-25-carboxy-5β-cholestan-26-oate
  参考文献：
  名称：

  A convenient synthesis of 5β-cholestan-26-oic and 5β-cholestan-26,27-dioic acids

  摘要：

  A new method for the preparation of 5 beta-cholestan-26-oic acids 7 and their analogs is described. The key steps in the synthesis are: iodination of bis- and tris-formyloxy-5 beta-cholan-24-ols 3; nucleophilic substitution of iodides 4 with diethyl sodiomalonate; complete alkaline hydrolysis of esters 5; and subsequent decarboxylation of geminal diacids 6 in DMSO. (C) 2000 Elsevier Science Inc. All rights reserved.

  DOI：

  10.1016/s0039-128x(99)00099-9

文献信息

• A convenient synthesis of 5β-cholestan-26-oic and 5β-cholestan-26,27-dioic acids
  作者：I Starchenkov、P Trapencieris、V Kauss、G Jas、I Kalvinsh

  DOI：10.1016/s0039-128x(99)00099-9

  日期：2000.3

  A new method for the preparation of 5 beta-cholestan-26-oic acids 7 and their analogs is described. The key steps in the synthesis are: iodination of bis- and tris-formyloxy-5 beta-cholan-24-ols 3; nucleophilic substitution of iodides 4 with diethyl sodiomalonate; complete alkaline hydrolysis of esters 5; and subsequent decarboxylation of geminal diacids 6 in DMSO. (C) 2000 Elsevier Science Inc. All rights reserved.