5-O-methyl-D-threo-2-pentulose | 143106-68-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 5-O-methyl-D-threo-2-pentulose
• 英文别名: (3S,4R)-1,3,4-trihydroxy-5-methoxypentan-2-one
• CAS: 143106-68-7
• 化学式: C₆H₁₂O₅
• 分子量: 164.158
• InChiKey: HYMPXWDPNKSULC-PHDIDXHHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -2.1
• 重原子数：
  11
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  87
• 氢给体数：
  3
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  3-羟基-2-氧代丙酸 、 2-hydroxy-3-methoxypropionaldehyde 在 sodium hydroxide 、 焦磷酸硫胺素 、 Lithium hydroxypyruvate 、 magnesium chloride 作用下， 以 水 为溶剂， 以38%的产率得到5-O-methyl-D-threo-2-pentulose
  参考文献：
  名称：

  Substrate specificity and carbohydrate synthesis using transketolase

  摘要：

  This paper describes the use of the enzyme transketolase as a catalyst in organic synthesis. The properties of transketolase from both yeast and spinach were investigated. The yeast enzyme was found to be more convenient for routine use. Examination of the substrate specificity of yeast transketolase demonstrated that the enzyme accepts a wide variety of 2-hydroxy aldehydes as substrates. A practical protocol for transketolase-catalyzed condensation of hydroxypyruvic acid with these aldehydes has been developed and used for the synthesis of four carbohydrates: L-idose, L-gulose, 2-deoxy-L-xylohexose, and L-xylose.

  DOI：

  10.1021/jo00048a023

文献信息

• Preparation of optically pure L-2-hydroxyaldehydes with yeast transketolase
  作者：Franz Effenberger、Volker Null、Thomas Ziegler

  DOI：10.1016/s0040-4039(00)79121-0

  日期：1992.9

  L-2-Hydroxyaldehydes L-3 with a great variety of substituents in 3-position are obtained in good chemical and excellent optical yields by kinetic resolution in the transketolase-catalyzed reaction of racemic 2-hydroxyaldehydes with lithium hydroxypyruvate 4 where only the enantiomer (R)-3 reacts to 5-deoxy-D-xyluloses 5.

  L-2-羟基醛L- 3在3位上有很大的各种取代基以良好的化学和由外消旋2-羟基醛的转酮酶-催化反应动力学拆分良好的光学收率与锂羟基丙酮酸得到4，其中只对映异构体（R）-3与5-脱氧-D-木酮糖5反应。
• Substrate specificity and carbohydrate synthesis using transketolase
  作者：Yoshihiro Kobori、David C. Myles、George M. Whitesides

  DOI：10.1021/jo00048a023

  日期：1992.10

  This paper describes the use of the enzyme transketolase as a catalyst in organic synthesis. The properties of transketolase from both yeast and spinach were investigated. The yeast enzyme was found to be more convenient for routine use. Examination of the substrate specificity of yeast transketolase demonstrated that the enzyme accepts a wide variety of 2-hydroxy aldehydes as substrates. A practical protocol for transketolase-catalyzed condensation of hydroxypyruvic acid with these aldehydes has been developed and used for the synthesis of four carbohydrates: L-idose, L-gulose, 2-deoxy-L-xylohexose, and L-xylose.