(S)-4-amino-2-phenylbutanoic acid | 177187-82-5

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: (S)-4-amino-2-phenylbutanoic acid
• 英文别名: (2S)-4-azaniumyl-2-phenylbutanoate
• CAS: 177187-82-5
• 化学式: C₁₀H₁₃NO₂
• 分子量: 179.219
• InChiKey: YBRIOADNXHWOSW-VIFPVBQESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1.4
• 重原子数：
  13
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  63.3
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  二碳酸二叔丁酯 、 (S)-4-amino-2-phenylbutanoic acid 在 sodium hydroxide 作用下， 以 四氢呋喃 为溶剂， 反应 3.5h， 以69%的产率得到(S)-4-(tert-Butoxycarbonylamino)-2-phenylbutanoic acid
  参考文献：
  名称：

  Enantioselective synthesis of 2-substituted 4-aminobutanoic acid (GABA) analogues via cyanomethylation of chiral enolates

  摘要：

  由溴乙腈对源自(4S,5R)-3-酰基-4-甲基-5-苯基-1,3-恶唑烷-2-酮的钠或锂烯醇盐进行的氰甲基化通常显示出良好的立体选择性；尽管3-(3-羧基丙酰)恶唑烷酮5d的反应特别不选择性，3-(戊-4-烯酰)和3-(3,4-二甲氧基氢桂皮酰)恶唑烷酮5e和5f被发现是5d的有效合成等价物。这些氰甲基化产物可以通过恶唑烷酮手性辅助剂的碱性水解，并随之对氰基进行氢化，转化为4-氨基丁酸（γ-氨基丁酸，GABA）的2-取代衍生物。

  DOI：

  10.1039/p19960000621
• 作为产物：
  描述：

  3-Cyano-2-phenylpropanoyl chloride 在 palladium on activated charcoal lithium hydroxide 、 3 A molecular sieve 、 氢气 、 双氧水 、 三乙胺 作用下， 以 四氢呋喃 、 二氯甲烷 、 溶剂黄146 为溶剂， 反应 8.0h， 生成 (S)-4-amino-2-phenylbutanoic acid
  参考文献：
  名称：

  Stereoselective synthesis of both enantiomers of N-Boc-α-aryl-γ-aminobutyric acids

  摘要：

  Esterification of racemic alpha-aryl-beta-cyanopropionic acid chlorides with either (R)- or (S)-N-phenylpantolactam as the chiral auxiliary in the presence of Et3N resulted in the predominant formation of (alphaR,3'R)- or (alphaS,3'S)-configured pantolactam cyano ester, respectively, in nearly quantitative yields with diastereomeric ratios of up to 93:7. Column chromatography of the diastereoenriched cyano esters, followed by hydrolysis of the resulting diastereopure cyano esters under essentially nonracemizing conditions gave enantiopure alpha-aryl-beta-cyanopropionic acids, which were readily converted in high yields into enantiopure (OER)- and (alphaS)-configured N-tert-butoxycarbonyl-alpha-aryl-gamma-aminobutyric acid (GABA) derivatives of potential biological interest. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2003.10.035

文献信息

• Enantioselective synthesis of 2-substituted 4-aminobutanoic acid (GABA) analogues via cyanomethylation of chiral enolates
  作者：Shamim Azam、Alice A. D'Souza、Peter B. Wyatt

  DOI：10.1039/p19960000621

  日期：——

  Cyanomethylation by bromoacetonitrile of sodium or lithium enolates derived from (4S,5R)-3-acyl-4-methyl-5-phenyl-1,3-oxazolidin-2-ones usually shows good stereoselectivity; although the reaction of 3-(3-carboxypropanoyl)oxazolidinone 5d is exceptionally unselective, the 3-(pent-4-enoyl)- and 3-(3,4-dimethoxyhydrocinnamoyl)oxazolidinones 5e and 5f are found to be effective synthetic equivalents of 5d. The cyanomethylation products can be converted into 2-substituted derivatives of 4-aminobutanoic acid (γ-aminobutyric acid, GABA) by the alkaline hydrolysis of the oxazolidinone chiral auxiliary followed by hydrogenation of the cyano group.

  由溴乙腈对源自(4S,5R)-3-酰基-4-甲基-5-苯基-1,3-恶唑烷-2-酮的钠或锂烯醇盐进行的氰甲基化通常显示出良好的立体选择性；尽管3-(3-羧基丙酰)恶唑烷酮5d的反应特别不选择性，3-(戊-4-烯酰)和3-(3,4-二甲氧基氢桂皮酰)恶唑烷酮5e和5f被发现是5d的有效合成等价物。这些氰甲基化产物可以通过恶唑烷酮手性辅助剂的碱性水解，并随之对氰基进行氢化，转化为4-氨基丁酸（γ-氨基丁酸，GABA）的2-取代衍生物。
• The preparation of enantiomerically enriched γ-amino acids (GABAs) using palladium catalysed allylic substitution
  作者：Christopher J. Martin、David J. Rawson、Jonathan M.J. Williams

  DOI：10.1016/s0957-4166(98)00383-8

  日期：1998.10

  Enantioselective palladium catalysed allylic substitution reactions have been employed as the asymmetry-producing step in the synthesis of enantiomerically enriched gamma-amino acids. (C) 1998 Elsevier Science Ltd. All rights reserved.
• Stereoselective synthesis of both enantiomers of N-Boc-α-aryl-γ-aminobutyric acids
  作者：Pelayo Camps、Diego Muñoz-Torrero、Laura Sánchez

  DOI：10.1016/j.tetasy.2003.10.035

  日期：2004.1

  Esterification of racemic alpha-aryl-beta-cyanopropionic acid chlorides with either (R)- or (S)-N-phenylpantolactam as the chiral auxiliary in the presence of Et3N resulted in the predominant formation of (alphaR,3'R)- or (alphaS,3'S)-configured pantolactam cyano ester, respectively, in nearly quantitative yields with diastereomeric ratios of up to 93:7. Column chromatography of the diastereoenriched cyano esters, followed by hydrolysis of the resulting diastereopure cyano esters under essentially nonracemizing conditions gave enantiopure alpha-aryl-beta-cyanopropionic acids, which were readily converted in high yields into enantiopure (OER)- and (alphaS)-configured N-tert-butoxycarbonyl-alpha-aryl-gamma-aminobutyric acid (GABA) derivatives of potential biological interest. (C) 2003 Elsevier Ltd. All rights reserved.