6β-isopropyl-3,3:17,17-bis(ethylenedioxy)androstan-5α-ol | 156264-46-9

• 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: 6β-isopropyl-3,3:17,17-bis(ethylenedioxy)androstan-5α-ol
• CAS: 156264-46-9
• 化学式: C₂₆H₄₂O₅
• 分子量: 434.616
• InChiKey: ROGCPZWKSPHUNO-JWOOHVBFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  31
• 可旋转键数：
  1
• 环数：
  6.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  57.2
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  6β-isopropyl-3,3:17,17-bis(ethylenedioxy)androstan-5α-ol 在 高氯酸 作用下， 以 四氢呋喃 为溶剂， 反应 3.0h， 以65%的产率得到6β-isopropyl-5α-hydroxyandrostane-3,17-dione
  参考文献：
  名称：

  6-Alkyl- and 6-Arylandrost-4-ene-3,17-diones as Aromatase Inhibitors. Synthesis and Structure-Activity Relationships

  摘要：

  Two series of 6 beta- and 6 alpha-substituted androst-4-ene-3,17-diones (5 and 6) were synthesized as aromatase inhibitors to gain insights of structure-activity relationships of varying substituents (methyl, ethyl, n-propyl, isopropyl, n-butyl, phenyl, benzyl, vinyl, and ethynyl) to the inhibitory activity. All of the inhibitors synthesized prevented human placental aromatase in a competitive manner. The inhibition activities of all the 6-n-alkylated steroids 5a-d and 6a-d (K-i = 1.4-12 nM) as well as the 6 beta-vinyl (5h), 6 alpha-benzyl (6g), and 6-methylene (10) compounds (K-i = 5.1, 10, and 4.9 nM, respectively) were very powerful whereas those of the g-isopropyl (5e and 6e), 6-phenyl (5f and 6f), 6 beta-benzyl (5g), and 6 beta-ethynyl (5i) steroids, having a bulky or polar substituent, were relatively weak. The 6 beta-ethyl derivative 5b was the most potent inhibitor among those synthesized. Inhibitors 5a, 5f, 5h, 5i, 6b, and 10 did not cause a time-dependent inactivation of aromatase. The 6 beta-alkyl steroids essentially had higher affinity for the enzyme than the corresponding 6 alpha-isomers, whereas the opposite relation was observed in a series of the aryl steroids. These results along with molecular modeling with the PM3 method clearly indicate that aromatase has a hydrophobic binding pocket with a limited accessible volume in the active site in the region corresponding to the beta-side rather than the alpha-side of the C-6 position of the substrate.

  DOI：

  10.1021/jm00035a011
• 作为产物：
  描述：

  3,3,17,17-diethylenedioxyandrost-5-ene 在 间氯过氧苯甲酸 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 7.0h， 生成 6β-isopropyl-3,3:17,17-bis(ethylenedioxy)androstan-5α-ol
  参考文献：
  名称：

  6-Alkyl- and 6-Arylandrost-4-ene-3,17-diones as Aromatase Inhibitors. Synthesis and Structure-Activity Relationships

  摘要：

  Two series of 6 beta- and 6 alpha-substituted androst-4-ene-3,17-diones (5 and 6) were synthesized as aromatase inhibitors to gain insights of structure-activity relationships of varying substituents (methyl, ethyl, n-propyl, isopropyl, n-butyl, phenyl, benzyl, vinyl, and ethynyl) to the inhibitory activity. All of the inhibitors synthesized prevented human placental aromatase in a competitive manner. The inhibition activities of all the 6-n-alkylated steroids 5a-d and 6a-d (K-i = 1.4-12 nM) as well as the 6 beta-vinyl (5h), 6 alpha-benzyl (6g), and 6-methylene (10) compounds (K-i = 5.1, 10, and 4.9 nM, respectively) were very powerful whereas those of the g-isopropyl (5e and 6e), 6-phenyl (5f and 6f), 6 beta-benzyl (5g), and 6 beta-ethynyl (5i) steroids, having a bulky or polar substituent, were relatively weak. The 6 beta-ethyl derivative 5b was the most potent inhibitor among those synthesized. Inhibitors 5a, 5f, 5h, 5i, 6b, and 10 did not cause a time-dependent inactivation of aromatase. The 6 beta-alkyl steroids essentially had higher affinity for the enzyme than the corresponding 6 alpha-isomers, whereas the opposite relation was observed in a series of the aryl steroids. These results along with molecular modeling with the PM3 method clearly indicate that aromatase has a hydrophobic binding pocket with a limited accessible volume in the active site in the region corresponding to the beta-side rather than the alpha-side of the C-6 position of the substrate.

  DOI：

  10.1021/jm00035a011