(1S,3aS,3bS,9aR,9bS,11aS)-1-Benzylcarbamoyl-9a,11a-dimethyl-7-oxo-1,2,3,3a,3b,4,7,8,9,9a,9b,10,11,11a-tetradecahydro-cyclopenta[i]phenanthridine-5-carboxylic acid tert-butyl ester | 1027970-78-0

• 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: (1S,3aS,3bS,9aR,9bS,11aS)-1-Benzylcarbamoyl-9a,11a-dimethyl-7-oxo-1,2,3,3a,3b,4,7,8,9,9a,9b,10,11,11a-tetradecahydro-cyclopenta[i]phenanthridine-5-carboxylic acid tert-butyl ester
• 英文别名: tert-butyl (1S,3aS,3bS,9aR,9bS,11aS)-1-(benzylcarbamoyl)-9a,11a-dimethyl-7-oxo-2,3,3a,3b,4,8,9,9b,10,11-decahydro-1H-cyclopenta[i]phenanthridine-5-carboxylate
• CAS: 1027970-78-0
• 化学式: C₃₁H₄₂N₂O₄
• 分子量: 506.685
• InChiKey: PMLIHAGFAPXDKB-FXBVBRSJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.2
• 重原子数：
  37
• 可旋转键数：
  5
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.65
• 拓扑面积：
  75.7
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (1S,3aS,3bS,9aR,9bS,11aS)-1-Benzylcarbamoyl-9a,11a-dimethyl-7-oxo-1,2,3,3a,3b,4,7,8,9,9a,9b,10,11,11a-tetradecahydro-cyclopenta[i]phenanthridine-5-carboxylic acid tert-butyl ester 在 三氟乙酸 作用下， 生成 (1S,3aS,3bS,9aR,9bS,11aS)-9a,11a-Dimethyl-7-oxo-2,3,3a,3b,4,5,7,8,9,9a,9b,10,11,11a-tetradecahydro-1H-cyclopenta[i]phenanthridine-1-carboxylic acid benzylamide
  参考文献：
  名称：

  6-氮杂类固醇：人1型和2型类固醇5α-还原酶的有效双重抑制剂。

  摘要：

  DOI：

  10.1021/jm00078a022
• 作为产物：
  描述：

  17β-carboxy-6-(tert-butylcarboxy)-6-azaandrost-4-en-3-one 在 吡啶 、 氯化亚砜 、 N,N-二甲基甲酰胺 作用下， 以 二氯甲烷 、 甲苯 为溶剂， 反应 17.0h， 生成 (1S,3aS,3bS,9aR,9bS,11aS)-1-Benzylcarbamoyl-9a,11a-dimethyl-7-oxo-1,2,3,3a,3b,4,7,8,9,9a,9b,10,11,11a-tetradecahydro-cyclopenta[i]phenanthridine-5-carboxylic acid tert-butyl ester
  参考文献：
  名称：

  Mce3R Stress-Resistance Pathway Is Vulnerable to Small-Molecule Targeting That Improves Tuberculosis Drug Activities

  摘要：

  One-third of the world's population carries Mycobacterium tuberculosis (Mtb), the infectious agent that causes tuberculosis (TB), and every 17 s someone dies of TB. After infection, Mtb can live dormant for decades in a granuloma structure arising from the host immune response, and cholesterol is important for this persistence of Mtb. Current treatments require long-duration drug regimens with many associated toxicities, which are compounded by the high doses required. We phenotypically screened 35 6-azasteroid analogues against Mtb and found that, at low micromolar concentrations, a subset of the analogues sensitized Mtb to multiple TB drugs. Two analogues were selected for further study to characterize the bactericidal activity of bedaquiline and isoniazid under normoxic and low-oxygen conditions. These two 6-azasteroids showed strong synergy with bedaquiline (fractional inhibitory concentration index = 0.21, bedaquiline minimal inhibitory concentration = 16 nM at 1 mu M 6-azasteroid). The rate at which spontaneous resistance to one of the 6-azasteroids arose in the presence of bedaquiline was approximately 10-9, and the 6-azasteroid-resistant mutants retained their isoniazid and bedaquiline sensitivity. Genes in the cholesterol-regulated Mce3R regulon were required for 6-azasteroid activity, whereas genes in the cholesterol catabolism pathway were not. Expression of a subset of Mce3R genes was down-regulated upon 6-azasteroid treatment. The Mce3R regulon is implicated in stress resistance and is absent in saprophytic mycobacteria. This regulon encodes a cholesterol-regulated stress-resistance pathway that we conclude is important for pathogenesis and contributes to drug tolerance, and this pathway is vulnerable to small-molecule targeting in live mycobacteria.

  DOI：

  10.1021/acsinfecdis.9b00099