(8S)-8-(p-tolylsulfonyloxy)-<8-(2)H>octanoic acid | 144401-72-9

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (8S)-8-(p-tolylsulfonyloxy)-<8-(2)H>octanoic acid
• 英文别名: (8S)-8-(p-tolylsulfonyloxy)-(8-(2)H)octanoic acid
• CAS: 144401-72-9
• 化学式: C₁₅H₂₂O₅S
• 分子量: 315.395
• InChiKey: PNUWSEMNCLCUMN-RPOKAEATSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.13
• 重原子数：
  21.0
• 可旋转键数：
  10.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.53
• 拓扑面积：
  80.67
• 氢给体数：
  1.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  (8S)-8-(p-tolylsulfonyloxy)-<8-(2)H>octanoic acid 在 disodium hydrogenphosphate 、 双氧水 、 三氟乙酸酐 作用下， 以 二氯甲烷 、 二甲基亚砜 为溶剂， 反应 4.0h， 生成 (8R)-8-acetoxy-<8-(2)H>octanoic acid
  参考文献：
  名称：

  Synthesis of linoleic acid with chiral isotopic labelling at a flanking and a medial allylic methylene: the (8R,9Z,12Z)-[8-2H] and (11R,9Z,12Z)-[11-2H]-stereoisomers, and (Z)-[2,2-2H2]non-3-enal

  摘要：

  [1-H-2]Oct-2-ynal is converted by fermenting bakers' yeast into (1S)-[1-H-2]oct-2-yn-l-ol with an enantiomeric purity of > 96% as measured by Mosher's MTPA method. The alcohol, as its tosyl ester, was then converted by copper-catalysed coupling with the di-Grignard of dec-9-ynoic acid and catalytic semi-hydrogenation, into (11R)-[11-H-2]linoleic acid having less than 2% E-material and >95 atom %D. Provision for (11S)-[11-H-2]linoleic acid was made by configurational inversion of (1R) - [1-H-2]oct-2-yn-1-ol using Mitsunobu chemistry. (8R)-[8-H-2]Linoleic acid is made by a similar approach, the labelled chiral centre being formed on (8S)-8-hydroxy-[8-H-2]octanoic acid (> 96% ee). Reaction of the corresponding tosate with lithium acetylide-ethylenediamine complex gave, with configurational inversion, (8R)-[8-H-2]dec-9-ynoic acid, built into (8R)-[8-H-2]linoleic acid. A degradative circuit is applied to estimate the extent of configurational inversion in the displacement. Mitsunobu inversion of the (8S)-8-hydroxy compound provides access to (8S)-[8-H-2]linoleic acid. (Z)-Non-3-enal, a labile aldehyde from the enzymic degradation of linoleic acid, is made in [2,2-H-2(2)]-labelled form by a synthesis which uses, as a key step, the reaction between triheptynylborane and deuteriodiazoacetic ester.

  DOI：

  10.1039/p19920001929
• 作为产物：
  描述：

  辛二酸 在 吡啶 、 重铬酸吡啶 、 氯化亚砜 、 硼氘化钠 作用下， 以 四氢呋喃 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 13.0h， 生成 (8S)-8-(p-tolylsulfonyloxy)-<8-(2)H>octanoic acid
  参考文献：
  名称：

  Synthesis of linoleic acid with chiral isotopic labelling at a flanking and a medial allylic methylene: the (8R,9Z,12Z)-[8-2H] and (11R,9Z,12Z)-[11-2H]-stereoisomers, and (Z)-[2,2-2H2]non-3-enal

  摘要：

  [1-H-2]Oct-2-ynal is converted by fermenting bakers' yeast into (1S)-[1-H-2]oct-2-yn-l-ol with an enantiomeric purity of > 96% as measured by Mosher's MTPA method. The alcohol, as its tosyl ester, was then converted by copper-catalysed coupling with the di-Grignard of dec-9-ynoic acid and catalytic semi-hydrogenation, into (11R)-[11-H-2]linoleic acid having less than 2% E-material and >95 atom %D. Provision for (11S)-[11-H-2]linoleic acid was made by configurational inversion of (1R) - [1-H-2]oct-2-yn-1-ol using Mitsunobu chemistry. (8R)-[8-H-2]Linoleic acid is made by a similar approach, the labelled chiral centre being formed on (8S)-8-hydroxy-[8-H-2]octanoic acid (> 96% ee). Reaction of the corresponding tosate with lithium acetylide-ethylenediamine complex gave, with configurational inversion, (8R)-[8-H-2]dec-9-ynoic acid, built into (8R)-[8-H-2]linoleic acid. A degradative circuit is applied to estimate the extent of configurational inversion in the displacement. Mitsunobu inversion of the (8S)-8-hydroxy compound provides access to (8S)-[8-H-2]linoleic acid. (Z)-Non-3-enal, a labile aldehyde from the enzymic degradation of linoleic acid, is made in [2,2-H-2(2)]-labelled form by a synthesis which uses, as a key step, the reaction between triheptynylborane and deuteriodiazoacetic ester.

  DOI：

  10.1039/p19920001929

文献信息

• Topological Study of Mechanistic Diversity in Conjugated Fatty Acid Biosynthesis
  作者：Palash Bhar、Darwin W. Reed、Patrick S. Covello、Peter H. Buist

  DOI：10.1002/anie.201202080

  日期：2012.7.2

  Variations on an oxidative theme: The precision with which FAD2‐type desaturases carry out CH activation reactions on flexible lipidic substrates is astonishing. The conformational space available within the active site of these enzymes has been explored using deuterium‐labeled substrates, and evidence for a novel quasi‐eclipsed conformer has been uncovered. The scheme shows some prototypical substrate

  氧化主题的变化：FAD2型去饱和酶在柔性脂质底物上进行CH活化反应的精度令人惊讶。已经使用氘标记的底物探索了这些酶活性位点中可用的构象空间，并且已经发现了新的半蚀构象异构体的证据。该方案显示了一些原型底物构象。