11-keto-5β-dihydrotestosterone | 1420-71-9

• 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: 11-keto-5β-dihydrotestosterone
• 英文别名: 17β-Hydroxy-5β-androstan-3,11-dion；17β-hydroxy-5β-androstane-3,11-dione；5beta-Androstane-3,11-dione, 17beta-hydroxy-；(5R,8S,9S,10S,13S,14S,17S)-17-hydroxy-10,13-dimethyl-2,4,5,6,7,8,9,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-3,11-dione
• CAS: 1420-71-9
• 化学式: C₁₉H₂₈O₃
• 分子量: 304.43
• InChiKey: RSQKILYTRHKUIJ-VVJIVDIYSA-N

物化性质

• 熔点：
  163-165 °C(Solv: ethyl acetate (141-78-6))
• 沸点：
  453.4±45.0 °C(Predicted)
• 密度：
  1.152±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  22
• 可旋转键数：
  0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.89
• 拓扑面积：
  54.4
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  11-keto-5β-dihydrotestosterone 在 3α-hydroxysteroid dehydrogenase type 3 作用下， 生成 3α,17β-dihydroxy-5β-androstan-11-one
  参考文献：
  名称：

  The A-ring reduction of 11-ketotestosterone is efficiently catalysed by AKR1D1 and SRD5A2 but not SRD5A1

  摘要：

  Testosterone and its 5 alpha-reduced form, 5 alpha-dihydrotestosterone, were previously thought to represent the only active androgens in humans. However, recent studies have shown that the potent androgen, 11-ketotestosterone, derived from the adrenal androgen precursor, 110-hydroxyandrostenedione, may in fact serve as the primary androgen in healthy women. Yet, despite recent renewed interest in these steroids, their downstream metabolism has remained undetermined. We therefore set out to investigate the metabolism of 11-ketotestosterone by characterising the 5 alpha or 50-reduction commitment step. We show that inactivation of 11-ketotestosterone is predominantly driven by AKR1D1, which efficiently catalyses the 50-reduction of 11-ketotestosterone, committing it to a metabolic pathway that terminates in 11-ketoetiocholanolone. We demonstrate that 5 alpha-reduction of 11-ketotestosterone is catalysed by SRD5A2, but not SRD5A1, and terminates in 11-ketoandrosterone, but is only responsible for a minority of 11-ketotestosterone inactivation. However, as 11-ketoetiocholanolone is also generated by the metabolism of the glucocorticoid cortisone, 11-ketoandrosterone should be considered a more specific urinary marker of 11-ketotestosterone production.

  DOI：

  10.1016/j.jsbmb.2020.105724
• 作为产物：
  描述：

  11β-羟基本胆烷醇酮 在 对甲苯磺酸 、 乙二醇 、 铂 、 苯 、 N-溴代乙酰胺 作用下， 生成 11-keto-5β-dihydrotestosterone
  参考文献：
  名称：

  11-Oxygenated Steroids. I. Partial Syntheses of 11-Ketotestosterone and of Adrenosterone

  摘要：

  DOI：

  10.1021/ja01098a004

文献信息

• Steroidal Thiazenones and Related Compounds¹
  作者：Philip E. Shaw、F. W. Gubitz、K. F. Jennings、G. O. Potts、A. L. Beyler、Robert L. Clarke

  DOI：10.1021/jm00334a034

  日期：1964.7