(-)-(2R,3R)-methyl-2,3-dihydroxy-pentanoate

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羟基酸及其衍生物
• 英文名称: (-)-(2R,3R)-methyl-2,3-dihydroxy-pentanoate
• 英文别名: methyl (2R,3R)-2,3-dihydroxypentanoate
• 化学式: C₆H₁₂O₄
• 分子量: 148.159
• InChiKey: PMBZZBIURKJQJN-RFZPGFLSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.2
• 重原子数：
  10
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  66.8
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (-)-(2R,3R)-methyl-2,3-dihydroxy-pentanoate 在 咪唑 、 二异丁基氢化铝 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 13.17h， 生成 (2S,3R)-2,3-bis((tert-butyldimethylsilyl)oxy)pentan-1-ol
  参考文献：
  名称：

  Total syntheses of four possible stereoisomers of resolvin E3

  摘要：

  Resolvin E3, 17,18-dihydroxy-5Z,8Z,11Z,13E,15E-eicosapentaenoic acid, is a potent anti-inflammatory lipid mediator. To determine the stereochemistries of the C17- and C18-hydroxy groups of resolvin E3 and to supply a sufficient amount of material for future biological studies, we developed a highly convergent and practical route to its four possible stereoisomers. The key reactions employed here were the Horner-Wadsworth-Emmons coupling, the two copper(I)-mediated reactions between the alkynes and the propargyl tosylates, and the simultaneous reduction of the three triple bonds to the three Z-olefins. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2012.02.045
• 作为产物：
  描述：

  反-2-戊酸甲酯 在 sodium periodate 、 四氧化锇 、 氯化亚砜 、 甲基磺酰胺 、 rhodium(III) chloride hydrate 、 水 、 potassium carbonate 、 氢化奎尼定 1,4-(2,3-二氮杂萘)二醚 、 三乙胺 、 potassium hexacyanoferrate(III) 作用下， 以 甲醇 、 四氯化碳 、 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 、 乙腈 、 叔丁醇 为溶剂， 反应 27.67h， 生成 (-)-(2R,3R)-methyl-2,3-dihydroxy-pentanoate
  参考文献：
  名称：

  Total syntheses of four possible stereoisomers of resolvin E3

  摘要：

  Resolvin E3, 17,18-dihydroxy-5Z,8Z,11Z,13E,15E-eicosapentaenoic acid, is a potent anti-inflammatory lipid mediator. To determine the stereochemistries of the C17- and C18-hydroxy groups of resolvin E3 and to supply a sufficient amount of material for future biological studies, we developed a highly convergent and practical route to its four possible stereoisomers. The key reactions employed here were the Horner-Wadsworth-Emmons coupling, the two copper(I)-mediated reactions between the alkynes and the propargyl tosylates, and the simultaneous reduction of the three triple bonds to the three Z-olefins. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2012.02.045

文献信息

• Studies on the generation of enolate anions from butane-2,3-diacetal protected glycolic acid derivatives and subsequent highly diastereoselective coupling reactions with aldehydes and acid chlorides
  作者：Steven V. Ley、Darren J. Dixon、Richard T. Guy、Maria A. Palomero、Alessandra Polara、Félix Rodríguez、Tom D. Sheppard

  DOI：10.1039/b412790k

  日期：——

  Highly diastereoselective coupling reactions of enolates derived from butane-2,3-diacetal protected glycolic acids 1 and 2 and their alkylated derivatives with aldehydes are reported together with their efficient acid-catalysed deprotection to yield enantiopure anti-2,3-dihydroxyesters. A procedure to provide the corresponding syn-2,3-dihydroxyesters is also described in two cases, proceeding via an acylation–reduction sequence. An usual double addition reaction of butane-2,3-diacetal protected glycolic acid to small aliphatic acid chlorides provides a synthetically useful, densely-functionalised lactone after acidic deprotection.

  报告了来自丁烷-2,3-二缩醛保护的羟基酸1和2及其烷基化衍生物与醛的高立体选择性偶联反应，并且有效的酸催化去保护反应能够生成对映体纯的反-2,3-二羟基酯。同时，在两种情况下也描述了一种提供相应顺-2,3-二羟基酯的程序，该程序通过酰化-还原序列进行。丁烷-2,3-二缩醛保护的羟基酸与小型脂肪酸氯化物的常规双重加成反应在酸去保护后提供了一种合成上有用的、密集功能化的内酯。
• Highly Diastereoselective Lithium Enolate Aldol Reactions of Butane-2,3-diacetal Desymmetrized Glycolic Acid and Deprotection to Enantiopure <i>anti</i>-2,3-Dihydroxy Esters
  作者：Darren J. Dixon、Steven V. Ley、Alessandra Polara、Tom Sheppard

  DOI：10.1021/ol016707n

  日期：2001.11.1

  [reaction--see text] The butane-2,3-diacetal (BDA) desymmetrized glycolic acid building block 1 undergoes efficient and highly diastereoselective lithium enolate aldol reactions with both aromatic and aliphatic aldehydes to afford, after an acidic methanolysis deprotection step, the enantiopure anti-2,3-dihydroxy esters in good yield.

  [反应-参见文本]异丁烷2,3-二缩醛（BDA）乙醇酸结构单元1与芳香族和脂肪族醛进行高效且高度非对映选择性的烯醇酸锂醛醇缩醛反应，从而在酸性甲醇分解脱保护步骤后得到对映体纯的抗2,3-二羟基酯，收率良好。
• Total syntheses of four possible stereoisomers of resolvin E3
  作者：Daisuke Urabe、Hidenori Todoroki、Koji Masuda、Masayuki Inoue

  DOI：10.1016/j.tet.2012.02.045

  日期：2012.4

  Resolvin E3, 17,18-dihydroxy-5Z,8Z,11Z,13E,15E-eicosapentaenoic acid, is a potent anti-inflammatory lipid mediator. To determine the stereochemistries of the C17- and C18-hydroxy groups of resolvin E3 and to supply a sufficient amount of material for future biological studies, we developed a highly convergent and practical route to its four possible stereoisomers. The key reactions employed here were the Horner-Wadsworth-Emmons coupling, the two copper(I)-mediated reactions between the alkynes and the propargyl tosylates, and the simultaneous reduction of the three triple bonds to the three Z-olefins. (C) 2012 Elsevier Ltd. All rights reserved.