20,20-ethylenedioxy-16α-bis(methoxycarbonyl)methyl-5α-pregnan-3-α-ol | 1140441-43-5

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: 20,20-ethylenedioxy-16α-bis(methoxycarbonyl)methyl-5α-pregnan-3-α-ol
• CAS: 1140441-43-5
• 化学式: C₂₈H₄₄O₇
• 分子量: 492.653
• InChiKey: HSRPOUPSYNDVMM-SSLZWMANSA-N

物化性质

• 沸点：
  553.0±30.0 °C(predicted)
• 密度：
  1.156±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.96
• 重原子数：
  35.0
• 可旋转键数：
  4.0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.93
• 拓扑面积：
  91.29
• 氢给体数：
  1.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  20,20-ethylenedioxy-16α-bis(methoxycarbonyl)methyl-5α-pregnan-3-α-ol 在 lithium aluminium tetrahydride 作用下， 以 四氢呋喃 为溶剂， 反应 2.0h， 生成
  参考文献：
  名称：

  Allopregnanolone (3α-Hydroxy-5α-pregnan-20-one) Derivatives with a Polar Chain in Position 16α: Synthesis and Activity

  摘要：

  The lipophilic nature of allopregnanolone prevents its user-friendly application in human medicine. On inspiration by previously prepared allopregnanolone with a 16 alpha-bound tetraethylammonium salt, an attempt was made to produce allopregnanolone analogues with polar groups introduced into position 16 alpha with the goal of increasing water solubility, brain accessibility, and potency of neuroactive steroids. The Michael addition to derivatives of pregn-16-en-20-one was the key reaction step. The link between the steroid skeleton and the new side chain was either a methylene group (when diethyl malonate was added) or an oxygen atom (when a hydroxy derivative was added). [S-35]TBPS displacement was used to evaluate the products. Several carbamates (but not their parent alcohols) displaced TBPS from the picrotoxin binding site on GABA(A) receptors. Although none of them was more potent than the above ammonium salt, which stimulated this study, their nonionic nature should not prevent their passage into the brain.

  DOI：

  10.1021/jm801454a
• 作为产物：
  描述：

  3α-hydroxy-16α-bis(methoxycarbonyl)methyl-5α-pregnan-20-one 、 乙二醇 在 对甲苯磺酸 、 原甲酸三乙酯 作用下， 以 水 、 苯 为溶剂， 反应 48.0h， 以38%的产率得到20,20-ethylenedioxy-16α-bis(methoxycarbonyl)methyl-5α-pregnan-3-α-ol
  参考文献：
  名称：

  Allopregnanolone (3α-Hydroxy-5α-pregnan-20-one) Derivatives with a Polar Chain in Position 16α: Synthesis and Activity

  摘要：

  The lipophilic nature of allopregnanolone prevents its user-friendly application in human medicine. On inspiration by previously prepared allopregnanolone with a 16 alpha-bound tetraethylammonium salt, an attempt was made to produce allopregnanolone analogues with polar groups introduced into position 16 alpha with the goal of increasing water solubility, brain accessibility, and potency of neuroactive steroids. The Michael addition to derivatives of pregn-16-en-20-one was the key reaction step. The link between the steroid skeleton and the new side chain was either a methylene group (when diethyl malonate was added) or an oxygen atom (when a hydroxy derivative was added). [S-35]TBPS displacement was used to evaluate the products. Several carbamates (but not their parent alcohols) displaced TBPS from the picrotoxin binding site on GABA(A) receptors. Although none of them was more potent than the above ammonium salt, which stimulated this study, their nonionic nature should not prevent their passage into the brain.

  DOI：

  10.1021/jm801454a