(S)-2-hydroxymethyl-N-((R)-2-hydroxy)-pentanoyl pyrrolidine | 219598-64-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯烷类
• 英文名称: (S)-2-hydroxymethyl-N-((R)-2-hydroxy)-pentanoyl pyrrolidine
• 英文别名: (2S)-2-(hydroxymethyl)-1-[(2S)-2-hydroxypentanoyl]pyrrolidine；(2R)-2-hydroxy-1-[(2S)-2-(hydroxymethyl)pyrrolidin-1-yl]pentan-1-one
• CAS: 219598-64-8
• 化学式: C₁₀H₁₉NO₃
• 分子量: 201.266
• InChiKey: JMTRZVQQXBWBEE-DTWKUNHWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.2
• 重原子数：
  14
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  60.8
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (S)-2-hydroxymethyl-N-((R)-2-hydroxy)-pentanoyl pyrrolidine 在 硫酸 作用下， 以 水 为溶剂， 反应 0.5h， 以79%的产率得到(R)-2-羟基戊酸
  参考文献：
  名称：

  Asymmetric reactions of α-ketoacid-derived hemiacetals: Stereoselective synthesis of α-hydroxy acids

  摘要：

  N-Acylation of prolinol with alpha-ketoacid chlorides results in concomitant hemiacetalization of the alpha-keto amide by the prolinol hydroxyl group, (R) or (S) alpha-hydroxy acids are obtained with good enantiomeric excess by stereodivergent reduction of these hemiacetals. Reaction with Grignard reagents at ambient temperature furnishes (R) alpha-alkyl mandelic acids with good stereoselectivity. (C) 1998 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(98)00914-4
• 作为产物：
  描述：

  2-oxopentanoyl chloride 在 盐酸 、 4-二甲氨基吡啶 、 钾硼氢 、 三乙胺 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 水 为溶剂， 反应 19.0h， 生成 (S)-2-hydroxymethyl-N-((R)-2-hydroxy)-pentanoyl pyrrolidine
  参考文献：
  名称：

  Asymmetric reactions of α-ketoacid-derived hemiacetals: Stereoselective synthesis of α-hydroxy acids

  摘要：

  N-Acylation of prolinol with alpha-ketoacid chlorides results in concomitant hemiacetalization of the alpha-keto amide by the prolinol hydroxyl group, (R) or (S) alpha-hydroxy acids are obtained with good enantiomeric excess by stereodivergent reduction of these hemiacetals. Reaction with Grignard reagents at ambient temperature furnishes (R) alpha-alkyl mandelic acids with good stereoselectivity. (C) 1998 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(98)00914-4

文献信息

• Photoinduced Electron Transfer (PET) Promoted Oxidative Activation of 1-(N-Benzyl-N-methylglycyl)-(S)-prolinol: Development of Novel Strategies Towards Enantioselective Syntheses of α-Amino Acids, TheirN-Methyl Derivatives and α-Hydroxy Acids Employing (S)-Prolinol as aRecyclable Chiral Auxiliary
  作者：Ganesh Pandey、Parthasarathi Das、P. Yella Reddy

  DOI：10.1002/(sici)1099-0690(200002)2000:4<657::aid-ejoc657>3.0.co;2-6

  日期：2000.2

  reagents and allyltrimethylsilane/TiCl 4 , provides 12a-d & 15 and 17a-c & 21, respectively, in a highly stereoselective manner. Hydrolysis of the resultant amides (12, 15, 17, and 21) provides α -amino acid derivatives (14) and α -hydroxy acids, respectively, in optically active form, along with the recovered (S)-prolinol chiral auxiliary in its recyclable form.

  1-(N-苄基-N-甲基甘氨酰)-(S)-脯氨醇 (1) 在干燥乙腈中的 PET 活化，利用 1,4-二氰基萘 (DCN) 作为光捕获电子受体和甲基紫精 (MV + + ) 作为电子转移介质，导致形成 3-[苄基（甲基）氨基]全氢吡咯并[2,1-c][1,4]oxazin-4-one (3)。当这种光解在乙腈水溶液中进行时，仅产生 3-羟基全氢吡咯并 [2,1-c][1,4]oxazin-4-one (4)。3 的形成可以通过 (S)-脯氨醇的 OH 部分对原位生成的亚胺阳离子中间体 (2) 进行分子内环化来合理化，而 4 是通过 2 水解然后缩醛化生成的。使用格氏试剂和烯丙基三甲基硅烷/TiCl 4 对 3 和 4 进行亲核烷基化，分别提供 12a-d & 15 和 17a-c & 21，以高度立体选择性的方式。所得酰胺（12、15、17和21）的水解分别提供旋光形式的α-氨基酸衍生物（
• Asymmetric reactions of α-ketoacid-derived hemiacetals: Stereoselective synthesis of α-hydroxy acids
  作者：Sunil V. Pansare、R.Gnana Ravi

  DOI：10.1016/s0040-4020(98)00914-4

  日期：1998.11

  N-Acylation of prolinol with alpha-ketoacid chlorides results in concomitant hemiacetalization of the alpha-keto amide by the prolinol hydroxyl group, (R) or (S) alpha-hydroxy acids are obtained with good enantiomeric excess by stereodivergent reduction of these hemiacetals. Reaction with Grignard reagents at ambient temperature furnishes (R) alpha-alkyl mandelic acids with good stereoselectivity. (C) 1998 Elsevier Science Ltd. All rights reserved.