2-(2,6-Dimethyl-phenylsulfanyl)-propionic acid ethyl ester | 124317-07-3

• 分子结构分类: 有机化合物 - 有机硫化合物 - 硫醚类
• 英文名称: 2-(2,6-Dimethyl-phenylsulfanyl)-propionic acid ethyl ester
• 英文别名: ethyl 2-((2,6-dimethylphenyl)thio)propanoate
• CAS: 124317-07-3
• 化学式: C₁₃H₁₈O₂S
• 分子量: 238.351
• InChiKey: HRGFADKHGKMRDY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.35
• 重原子数：
  16.0
• 可旋转键数：
  4.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  26.3
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  2-(2,6-Dimethyl-phenylsulfanyl)-propionic acid ethyl ester 、 乙二胺 在 三甲基铝 作用下， 生成 4,5-dihydro-2-<1-<(2,6-dimethylphenyl)thio>ethyl>-1H-imidazole
  参考文献：
  名称：

  Potential antisecretory antidiarrheals. 2. .alpha.2-Adrenergic 2-[(aryloxy)alkyl]imidazolines

  摘要：

  Lofexidine, an alpha 2-agonist, has central hypotensive activity and peripheral intestinal antisecretory activity. Analogues were synthesized with increased polarity in an attempt to prevent penetration of the blood-brain barrier. The compounds were evaluated in the cholera toxin treated ligated jejunum of the rat and in the Ussing chamber with a rabbit ileum preparation. Active compounds were determined to be alpha 2-adrenergic agonists by yohimbine reversals of their Ussing chamber activities. The 2,6-dimethyl derivative of lofexidine, 4a, was as active as lofexidine in vivo, but derivatives with 2,6-substituents larger than ethyl were inactive. (Aryloxy)alkyl derivatives which have an imidazoline and a methyl or larger group as part of the alkyl exhibited the best antisecretory activity. Compounds with substituents in the para position of the phenyl ring were generally inactive. 3-Amino-2,6-dimethyl derivative 21 was twice as active as 4a. A 2-methyl substituent is required in the 3-amino series to retain good activity. 2-Methyl derivative 12a had activity comparable to that of 4a, while 6-methyl derivative 12f was inactive. Substituents on the 3-amino group did not affect the activity, but substituting a hydroxyl for the amino group produced an inactive compound. Replacing the phenyl moiety with a 4-indole resulted in retention of activity, but other heterocycles were inactive. Compound 12a was resolved and d isomer 32 was five times more potent than l isomer 33. The more active compounds in the rat cholera toxin assay (RCTA), when evaluated in the dog, exhibited antisecretory activity but also exhibited central nervous system (CNS) effects, sedation and ataxia, at 10 mg/kg, and in spontaneously hypertensive rats at 50 mg/kg. A measure of polarity, log P, was calculated for the (aryloxy)alkyl groups. Regression analysis showed no correlation of antisecretory ED50 to the calculated log P. The active compounds did not show a separation of the central CNS effects from the peripheral antisecretory activity by increasing the polarity.

  DOI：

  10.1021/jm00164a024
• 作为产物：
  描述：

  2,6-二甲基巯基苯酚 、 2-溴丙酸乙酯 在 sodium hydride 作用下， 生成 2-(2,6-Dimethyl-phenylsulfanyl)-propionic acid ethyl ester
  参考文献：
  名称：

  Potential antisecretory antidiarrheals. 2. .alpha.2-Adrenergic 2-[(aryloxy)alkyl]imidazolines

  摘要：

  Lofexidine, an alpha 2-agonist, has central hypotensive activity and peripheral intestinal antisecretory activity. Analogues were synthesized with increased polarity in an attempt to prevent penetration of the blood-brain barrier. The compounds were evaluated in the cholera toxin treated ligated jejunum of the rat and in the Ussing chamber with a rabbit ileum preparation. Active compounds were determined to be alpha 2-adrenergic agonists by yohimbine reversals of their Ussing chamber activities. The 2,6-dimethyl derivative of lofexidine, 4a, was as active as lofexidine in vivo, but derivatives with 2,6-substituents larger than ethyl were inactive. (Aryloxy)alkyl derivatives which have an imidazoline and a methyl or larger group as part of the alkyl exhibited the best antisecretory activity. Compounds with substituents in the para position of the phenyl ring were generally inactive. 3-Amino-2,6-dimethyl derivative 21 was twice as active as 4a. A 2-methyl substituent is required in the 3-amino series to retain good activity. 2-Methyl derivative 12a had activity comparable to that of 4a, while 6-methyl derivative 12f was inactive. Substituents on the 3-amino group did not affect the activity, but substituting a hydroxyl for the amino group produced an inactive compound. Replacing the phenyl moiety with a 4-indole resulted in retention of activity, but other heterocycles were inactive. Compound 12a was resolved and d isomer 32 was five times more potent than l isomer 33. The more active compounds in the rat cholera toxin assay (RCTA), when evaluated in the dog, exhibited antisecretory activity but also exhibited central nervous system (CNS) effects, sedation and ataxia, at 10 mg/kg, and in spontaneously hypertensive rats at 50 mg/kg. A measure of polarity, log P, was calculated for the (aryloxy)alkyl groups. Regression analysis showed no correlation of antisecretory ED50 to the calculated log P. The active compounds did not show a separation of the central CNS effects from the peripheral antisecretory activity by increasing the polarity.

  DOI：

  10.1021/jm00164a024

文献信息

• Direct access to α-sulfenylated amides/esters <i>via</i> sequential oxidative sulfenylation and C–C bond cleavage of 3-oxobutyric amides/esters
  作者：Yi Jiang、Jie-dan Deng、Hui-hong Wang、Jiao-xia Zou、Yong-qiang Wang、Jin-hong Chen、Long-qing Zhu、Hong-hua Zhang、Xue Peng、Zhen Wang

  DOI：10.1039/c7cc09026a

  日期：——

  An efficient, environmentally benign and unprecedented synthesis of various α-sulfenylated amides/esters has been developed under oxygen atmosphere. The reaction shows good functional group tolerance and excellent chemo/regioselectivity. All the desired products were obtained in moderate to excellent yields, even on the gram scale. Practically, the related α-thiol Weinreb amide can be readily transferred

  在氧气气氛下，已经开发出一种高效，环境友好的和前所未有的合成各种α-亚磺酰化酰胺/酯的方法。该反应显示出良好的官能团耐受性和优异的化学/区域选择性。即使在克规模上，也以中等至极好的收率获得了所有所需的产品。实际上，相关的α-硫醇Weinreb酰胺可以很容易地转移到一系列预期的化合物中，并且硒原子可以高产率地引入到酰胺的α-位。