(5S,6S)-5,6-dimethoxy-5,6-dimethyl-1,4-dioxan-2-one | 371160-92-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (5S,6S)-5,6-dimethoxy-5,6-dimethyl-1,4-dioxan-2-one
• CAS: 371160-92-8
• 化学式: C₈H₁₄O₅
• 分子量: 190.196
• InChiKey: JGTHYIWENNOLMX-YUMQZZPRSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.2
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.88
• 拓扑面积：
  54
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  (5S,6S)-5,6-dimethoxy-5,6-dimethyl-1,4-dioxan-2-one 在 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 为溶剂， 反应 1.75h， 生成 (3R,4R)-4-((2R,5S,6S)-5,6-dimethoxy-5,6-dimethyl-3-oxo-[1,4]dioxan-2-yl)-3-((R)-3-oxo-1,3-diphenylpropyl)chroman-2-one
  参考文献：
  名称：

  丁烷-2,3-二缩醛保护的乙醇酸衍生物的烯醇式当量的迈克尔，迈克尔-奥尔多和迈克尔-迈克尔反应。

  摘要：

  据报道，丁烷-2，3-二缩醛保护的乙醇酸衍生物与迈克尔受体和醛的连续偶联反应。该结构单元的对映体纯样品用于动力学拆分作为对映异构体的外消旋混合物存在的手性迈克尔受体。

  DOI：

  10.1039/b512410g
• 作为产物：
  描述：

  (2S,3S)-5-bromomethyl-2,3-dimethoxy-2,3-dimethyl-[1,4]dioxane 在 双(三甲基硅烷基)氨基钾 、 臭氧 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 为溶剂， 生成 (5S,6S)-5,6-dimethoxy-5,6-dimethyl-1,4-dioxan-2-one
  参考文献：
  名称：

  Butane-2,3-Diacetal-Desymmetrized Glycolic Acid—A New Building Block for the Stereoselective Synthesis of Enantiopureα-Hydroxy Acids

  摘要：

  According to a chiral memory protocol, a chiral glycolic acid equivalent, the butane-2,3-diacetal-desymmetrized glycolate 2, is obtained from chiral 3-halopropane-1,2-diols 1. Compound 2 is a new and effective building block for the synthesis of mono- and dialkylated α-hydroxy acids 3, which constitute a biologically and pharmacologically important structural motif.

  DOI：

  10.1002/1521-3773(20010803)40:15<2906::aid-anie2906>3.0.co;2-5

文献信息

• Evaluation of fluoropyruvate as nucleophile in reactions catalysed by N-acetyl neuraminic acid lyase variants: scope, limitations and stereoselectivity
  作者：Jennifer Stockwell、Adam D. Daniels、Claire L. Windle、Thomas A. Harman、Thomas Woodhall、Tomas Lebl、Chi H. Trinh、Keith Mulholland、Arwen R. Pearson、Alan Berry、Adam Nelson

  DOI：10.1039/c5ob02037a

  日期：——

  The stereochemical course of aldolase-catalysed reaction between fluoropyruvate and aldehydes is described.

  描述了aldolase催化的氟代丙酮和醛之间的立体化学过程。

• Synthesis of a Ceramide Sphingolipid as a Potential Sex Pheromone of the Hair Crab<i>Erimacrus isenbeckii</i>Using Butane-2,3-diacetal Desymmetrised Glycolic Acid Building Blocks
  作者：Steven V. Ley、Darren J. Dixon、Sophie Lohmann、Tom D. Sheppard

  DOI：10.1055/s-2005-862361

  日期：——

  A stereoselective synthesis of a ceramide sphingolipid as a potential sex pheromone of the hair crab Erimacrus isenbeckii is reported using diastereoselective alkylation and aldol reactions of butane-2,3-diacetal (BDA) desymmetrised glycolic acid building blocks as the key synthetic steps.

  报道了以头发蟹（Erimacrus isenbeckii）潜在性信息素为目标，通过非对称丁烷-2,3-二缩醛（BDA）转化甘油酸模块的立体选择性烷基化和aldol反应，实现神经酰胺鞘脂的立体选择性合成关键步骤。
• 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。
• Preparation of enantiopure butane-2,3-diacetals of glycolic acid and alkylation reactions leading to α-hydroxyacid and amide derivatives
  作者：Steven V. Ley、Elena Diez、Darren J. Dixon、Richard T. Guy、Patrick Michel、Gillian L. Nattrass、Tom D. Sheppard

  DOI：10.1039/b412788a

  日期：——

  The preparation of butane-2,3-diacetal protected glycolic acid and related systems is described together with highly selective alkylation reactions of (R,R) and (S,S) butanediacetal protected glycolic acid. These compounds are readily deprotected to give enantiopure alpha-hydroxyacids, alpha-hydroxyesters or alpha-hydroxyamides by suitable choice of conditions.

  描述了由2,3-二缩醛丁烷保护的乙醇酸的制备方法和相关系统，以及（R，R）和（S，S）丁二缩醛保护的乙醇酸的高度选择性烷基化反应。这些化合物可容易地脱保护，得到对映体纯的α-羟基酸，由条件适当选择的α-羟基酯或α-羟基酰胺。
• Total Synthesis of the PhytotoxicAgent Herbarumin II Using Butane Diacetals of Glycolic Acid as BuildingBlocks
  作者：Steven V. Ley、Elena Diez、Darren J. Dixon、Alessandra Polara、Felix Rodriguez

  DOI：10.1055/s-2003-39892

  日期：——

  The total synthesis of the phytotoxic agent herbarumin II has provided an ideal stage to exploit the utility of butane diacetal (BDA) desymmetrised glycolic acid as a primary building block.

  植物毒性剂 Herbarumin II 的全合成为利用丁烷二缩醛 (BDA) 去对称乙醇酸作为主要构件提供了一个理想的阶段。