(S)-N-benzoyl-3-(2-thienyl)-alanine

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (S)-N-benzoyl-3-(2-thienyl)-alanine
• 英文别名: N-benzoyl-L-β-(2-thienyl)alanine；(2S)-2-benzamido-3-thiophen-2-ylpropanoic acid
• 化学式: C₁₄H₁₃NO₃S
• 分子量: 275.328
• InChiKey: XWGRCHUPNVPDDU-LBPRGKRZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  19
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  94.6
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (S)-N-benzoyl-3-(2-thienyl)-alanine 在 溶剂黄146 作用下， 以 二氯甲烷 为溶剂， 以61%的产率得到2-phenyl-4-thiophen-2-ylmethyl-4H-oxazol-5-one
  参考文献：
  名称：

  Peptide-Catalyzed Conversion of Racemic Oxazol-5(4H)-ones into Enantiomerically Enriched α-Amino Acid Derivatives

  摘要：

  We report the development and optimization of a tetrapeptide that catalyzes the methanolytic dynamic kinetic resolution of oxazol-5(4H)-ones (azlactones) with high levels of enantioinduction. Oxazolones possessing benzylic-type substituents were found to perform better than others, providing methyl ester products in 88:12 to 98:2 er. The mechanism of this peptide-catalyzed process was investigated through truncation studies and competition experiments. High-field NOESY analysis was performed to elucidate the solution-phase structure of the peptide, and we present a plausible model for catalysis.

  DOI：

  10.1021/jo402828f
• 作为产物：
  描述：

  3-(2-噻吩基)-L-丙氨酸 在 氯化亚砜 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 3.0h， 生成 (S)-N-benzoyl-3-(2-thienyl)-alanine
  参考文献：
  名称：

  Rh（iii）催化的非对映选择性转移氢化：有效进入HIV蛋白酶抑制剂的关键中间体。

  摘要：

  开发了一种由束缚的铑配合物催化的α-氨基烷基α'-氯甲基酮的高效非对映选择性转移加氢反应，并成功地用于HIV蛋白酶抑制剂关键中间体的合成中。使用当前的Rh（iii）催化剂系统，可以以优异的收率和非对映选择性（最高99％收率，最高99：1 dr）生产一系列手性3-氨基-1-氯-2-羟基-4-苯基丁烷。通过使用Rh（iii）催化剂的两种对映异构体，可以有效地获得所需产物的两种非对映异构体。

  DOI：

  10.1039/c9cc09793g

文献信息

• Unusual amino acids IV. Asymmetric synthesis of thienylalanines
  作者：Christian Döbler、H.-J. Kreuzfeld、H.W. Krause、M. Michalik

  DOI：10.1016/s0957-4166(00)80424-3

  日期：1993.8

  (Z)-2-N-Acylamino-3-thienyl-acrylic acids and their esters were prepared by known procedures and hydrogenated to the corresponding optically active 2-N-acetyl(or benzoyl)-3-(2- or 3-thienyl)-alanines with optical yields up to 90 % using the rhodium complexes of ''PROPRAPHOS'' 6a,b and O,N-bis(diphenylphosphino)-2-exo-hydroxy,3-endo-methylamino-norbornane 6c as chiral catalysts, Recrystallization and deacylation of the obtained amino acid derivatives yields the optically pure hydrochlorides of the thienylalanines and the free amino acids.
• Peptide-Catalyzed Conversion of Racemic Oxazol-5(4<i>H</i>)-ones into Enantiomerically Enriched α-Amino Acid Derivatives
  作者：Anthony J. Metrano、Scott J. Miller

  DOI：10.1021/jo402828f

  日期：2014.2.21

  We report the development and optimization of a tetrapeptide that catalyzes the methanolytic dynamic kinetic resolution of oxazol-5(4H)-ones (azlactones) with high levels of enantioinduction. Oxazolones possessing benzylic-type substituents were found to perform better than others, providing methyl ester products in 88:12 to 98:2 er. The mechanism of this peptide-catalyzed process was investigated through truncation studies and competition experiments. High-field NOESY analysis was performed to elucidate the solution-phase structure of the peptide, and we present a plausible model for catalysis.
• Rh(<scp>iii</scp>)-Catalyzed diastereoselective transfer hydrogenation: an efficient entry to key intermediates of HIV protease inhibitors
  作者：Fangyuan Wang、Long-Sheng Zheng、Qi-Wei Lang、Congcong Yin、Ting Wu、Phannarath Phansavath、Gen-Qiang Chen、Virginie Ratovelomanana-Vidal、Xumu Zhang

  DOI：10.1039/c9cc09793g

  日期：——

  A highly efficient diastereoselective transfer hydrogenation of α-aminoalkyl α'-chloromethyl ketones catalyzed by a tethered rhodium complex was developed and successfully utilized in the synthesis of the key intermediates of HIV protease inhibitors. With the current Rh(iii) catalyst system, a series of chiral 3-amino-1-chloro-2-hydroxy-4-phenylbutanes were produced in excellent yields and diastereoselectivities

  开发了一种由束缚的铑配合物催化的α-氨基烷基α'-氯甲基酮的高效非对映选择性转移加氢反应，并成功地用于HIV蛋白酶抑制剂关键中间体的合成中。使用当前的Rh（iii）催化剂系统，可以以优异的收率和非对映选择性（最高99％收率，最高99：1 dr）生产一系列手性3-氨基-1-氯-2-羟基-4-苯基丁烷。通过使用Rh（iii）催化剂的两种对映异构体，可以有效地获得所需产物的两种非对映异构体。