ent-Chenodeoxycholic acid | 1000163-18-7

• 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: ent-Chenodeoxycholic acid
• 英文别名: cholic acid；(4S)-4-[(3S,5R,7S,8S,9R,10R,13S,14R,17S)-3,7-dihydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoic acid
• CAS: 1000163-18-7
• 化学式: C₂₄H₄₀O₄
• 分子量: 392.579
• InChiKey: RUDATBOHQWOJDD-MKELMWJVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.9
• 重原子数：
  28
• 可旋转键数：
  4
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.96
• 拓扑面积：
  77.8
• 氢给体数：
  3
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  hexa-N-Boc deoxy-neomycin-5’’-amine 、 ent-Chenodeoxycholic acid 在 O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、 N,N-二异丙基乙胺 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 2.0h， 以89%的产率得到5''-N-(cholanoyl)-1,3,2',6',2''',6'''-hexa-N-(tert-butoxycarbonyl)-5''-deoxy-neomycin
  参考文献：
  名称：

  Design, Synthesis, and Antibacterial Activities of Neomycin−Lipid Conjugates: Polycationic Lipids with Potent Gram-Positive Activity

  摘要：

  Aminoglycoside antibiotics and cationic detergents constitute two classes of clinically important drugs and antiseptics. Their bacteriological and clinical efficacy, however, has decreased recently due to antibiotic resistance. We have synthesized aminoglycoside-lipid conjugates in which the aminoglycoside neomycin forms the cationic headgroup of a polycationic detergent. Our results show that neomycin-C-16 and neomycin-C-20 conjugates exhibit strong Gram-positive activity but reduced Gram-negative activity. The MIC of neomycin-C-16 (C-20) conjugates against methicillin-resistant Staphylococcus aureus (MRSA) is comparable to clinically used antiseptics.

  DOI：

  10.1021/jm800345u
• 作为产物：
  描述：

  (3β,5α,7β,8α,9β,10α,13α,14β,17α,20S)-3,7-bis(acetyloxy)cholan-24-oic acid methyl ester 在 氢氧化钾 作用下， 以 乙醇 为溶剂， 反应 18.0h， 以76%的产率得到ent-Chenodeoxycholic acid
  参考文献：
  名称：

  Synthesis, Characterization, and Receptor Interaction Profiles of Enantiomeric Bile Acids

  摘要：

  Bile acids are endogenous steroid detergents with receptor-mediated physiologic actions including activation of the G-protein coupled receptor TGR5 and gene regulation mediated by nuclear receptors. In this study, we report the first synthesis of enantiomeric lithocholic acid (ent-LCA, ent-1) and chenodeoxycholic acid (ent-CDCA, ent-2) via ent-testosterone (3). ent-1 was synthesized in 21 total steps in 4.2% yield, whereas ent-2 was obtained in 23 total steps in 0.8% yield. Critical micelle concentrations of the enantiomeric bile acids were found to be identical to their natural counterparts. Furthermore, enantiomeric bile acids were also tested for their ability to modulate bile acid activated proteins: farnesoid X receptor, vitamin D receptor, pregnane X receptor, and TGR5. Interestingly, ent-1 and ent-2 showed differential interactions with these proteins as compared to their corresponding natural bile acids. These data highlight the potential for using enantioselectivity as away to distinguish between receptor and nonreceptor-mediated functions of natural bile acids.

  DOI：

  10.1021/jm0707931

文献信息

• Design, Synthesis, and Antibacterial Activities of Neomycin−Lipid Conjugates: Polycationic Lipids with Potent Gram-Positive Activity
  作者：Smritilekha Bera、George G. Zhanel、Frank Schweizer

  DOI：10.1021/jm800345u

  日期：2008.10.9

  Aminoglycoside antibiotics and cationic detergents constitute two classes of clinically important drugs and antiseptics. Their bacteriological and clinical efficacy, however, has decreased recently due to antibiotic resistance. We have synthesized aminoglycoside-lipid conjugates in which the aminoglycoside neomycin forms the cationic headgroup of a polycationic detergent. Our results show that neomycin-C-16 and neomycin-C-20 conjugates exhibit strong Gram-positive activity but reduced Gram-negative activity. The MIC of neomycin-C-16 (C-20) conjugates against methicillin-resistant Staphylococcus aureus (MRSA) is comparable to clinically used antiseptics.
• Synthesis, Characterization, and Receptor Interaction Profiles of Enantiomeric Bile Acids
  作者：Bryson W. Katona、Carolyn L. Cummins、Andrew D. Ferguson、Tingting Li、Daniel R. Schmidt、David J. Mangelsdorf、Douglas F. Covey

  DOI：10.1021/jm0707931

  日期：2007.11.1

  Bile acids are endogenous steroid detergents with receptor-mediated physiologic actions including activation of the G-protein coupled receptor TGR5 and gene regulation mediated by nuclear receptors. In this study, we report the first synthesis of enantiomeric lithocholic acid (ent-LCA, ent-1) and chenodeoxycholic acid (ent-CDCA, ent-2) via ent-testosterone (3). ent-1 was synthesized in 21 total steps in 4.2% yield, whereas ent-2 was obtained in 23 total steps in 0.8% yield. Critical micelle concentrations of the enantiomeric bile acids were found to be identical to their natural counterparts. Furthermore, enantiomeric bile acids were also tested for their ability to modulate bile acid activated proteins: farnesoid X receptor, vitamin D receptor, pregnane X receptor, and TGR5. Interestingly, ent-1 and ent-2 showed differential interactions with these proteins as compared to their corresponding natural bile acids. These data highlight the potential for using enantioselectivity as away to distinguish between receptor and nonreceptor-mediated functions of natural bile acids.