rac-3-eicosanamido-2-ethoxy-1-propanol | 131933-51-2

• 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: rac-3-eicosanamido-2-ethoxy-1-propanol
• 英文别名: N-(2-ethoxy-3-hydroxypropyl)icosanamide
• CAS: 131933-51-2
• 化学式: C₂₅H₅₁NO₃
• 分子量: 413.685
• InChiKey: FCVJTQLKIXKSDP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.54
• 重原子数：
  29.0
• 可旋转键数：
  23.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.96
• 拓扑面积：
  58.56
• 氢给体数：
  2.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  rac-3-eicosanamido-2-ethoxy-1-propanol 在 吡啶 作用下， 以 四氢呋喃 、 乙醚 、 氯仿 、 异丙醇 为溶剂， 反应 10.0h， 生成 rac-3-eicosanamido-2-ethoxypropylphosphocholine
  参考文献：
  名称：

  Structure−Activity Relationship for Enhancement of Paracellular Permeability across Caco-2 Cell Monolayers by 3-Alkylamido-2-alkoxypropylphosphocholines

  摘要：

  Paracellular permeability enhancers have been used to improve the oral bioavailability of hydrophilic drugs; however, the mechanism of action of many enhancers is poorly understood. In this study, highly potent enhancers of paracellular permeability were identified in the 3-alkylamido-2-alkoxypropylphosphocholine series, and a structure-activity relationship was developed for enhancement of paracellular permeability across Caco-2 cell monolayers. Compounds with short (<5 carbons) hydrocarbon chains at both C-2 and C-3 were generally inactive. The potency exhibited a parabolic relationship with respect to the chain length at either C-2 or C-3. Linear molecules (i.e., compounds with a short hydrocarbon chain at C-2 or C-3 and a long hydrocarbon chain on C-3 or C-2, respectively) were more potent than the corresponding branched molecules with the same carbon load. The efficacy of 3-alkylamido2-alkoxypropylphosphocholines as enhancers of paracellular permeability was not dependent on their existence in micellar form or their ability to alter the fluidity of cell membrane. Previously, a correlation-between the potency of alkylphosphocholines as enhancers of paracellular permeability and the inhibitors of phospholipase C (PLC) was established in Madine Darby canine kidney (MDCK) cell monolayers. The potencies of selected 3-alkylamido-2-alkoxypropylphosphocholines as inhibitors of PLC and enhancers of paracellular permeability fit well into this correlation. Therefore, phosphocholines are likely to increase paracellular permeability by modulating the signal transduction pathway initiated by a PLC-catalyzed reaction rather than by physically altering the cell membrane.

  DOI：

  10.1021/jm020001x
• 作为产物：
  描述：

  二十酸 在 4-二甲氨基吡啶 、 对甲苯磺酸 、 N,N'-二环己基碳二亚胺 作用下， 以 甲醇 、 二氯甲烷 、 氯仿 为溶剂， 反应 48.0h， 生成 rac-3-eicosanamido-2-ethoxy-1-propanol
  参考文献：
  名称：

  In vitro evaluation of phosphocholine and quaternary ammonium containing lipids as novel anti-HIV agents

  摘要：

  A series of synthetic lipids containing a two- or three-carbon backbone substituted with a thio, oxy, or amidoalkyl functionality and either a phosphocholine or quaternary ammonium moiety was evaluated as potential anti-HIV-1 agents. Several analogues were identified as possessing activity with the most promising compound being rac-3-octadecanamido-2-ethoxypropylphosphocholine (8). Compound 8 exhibited an IC50 for the inhibition of plaque formation of 0.16-mu-M which was 84-fold lower than the IC50 value determined for CEM-SS cell growth inhibition. Initial mechanistic studies have indicated that these compounds, unlike AZT, are not reverse transcriptase (RT) inhibitors, but instead appear to inhibit a late step in HIV replication involving virus assembly and infectious virus production. Since these lipids are acting via a different mechanism, they represent an alternative approach to the chemotherapeutic treatment of AIDS as well as candidates for combination therapy with AZT.

  DOI：

  10.1021/jm00108a021

文献信息

• Structure—activity relationships for enhancement of paracellular permeability by 2-alkoxy-3-alkylamidopropylphosphocholines across Caco-2 cell monolayers
  作者：Dong-Zhou Liu、Susan L. Morris-Natschke、Louis S. Kucera、Khalid S. Ishaq、Dhiren R. Thakker

  DOI：10.1021/js9900957

  日期：1999.11

  The oral route is the preferred route of delivery for a large number of drug molecules. However, the intestinal epithelium presents a formidable barrier for delivery of drugs into systemic circulation. Phospholipids are among compounds that enhance the absorption of drugs across the intestinal epithelium. In this paper, we describe structure-activity relationships for phospholipid derivatives as enhancers of paracellular permeability across Caco-2 cell monolayers. in a series of 2-alkoxy-3-alkylamidopropylphosphocholine derivatives, compounds with a long chain at C-3 (R-3) and short chain at C-2 (R-2) were potent in causing a decrease in transepithelial electrical resistance (TEER) and an increase in mannitol transport, but also showed significant cytotoxicity. Compounds with 9-11 carbons at C-3 and 6-10 carbons at C-2 provided good separation (up to 2.7-fold) between activity and cytotoxicity. Notably, a good correlation (r(2) = 0.93) was observed between EC50 (TEER) [concentration that caused a drop in TEER to 50% of its control (untreated) value] and EC10X (mannitol) [concentration that caused 10-fold increase in mannitol transport over the control (untreated) value], confirming that a decrease in TEER is associated with enhanced permeability of the hydrophilic compounds across Caco-2 cell monolayers. Compounds with medium to long carbon chains at C-2 and C-3, and the total carbons in the alkyl chains > 20, showed poor activity and no cytotoxicity.
• MEYER, KAREN L.;MARASCO, CANIO J. (JR);MORRIS-NATSCHKE, SUSAN L.;ISHAQ, K+, J. MED. CHEM., 34,(1991) N, C. 1377-1383
  作者：MEYER, KAREN L.、MARASCO, CANIO J. (JR)、MORRIS-NATSCHKE, SUSAN L.、ISHAQ, K+

  DOI：——

  日期：——