N²-(tert-butyloxycarbonyl)-N⁵,N⁵-dimethylglutamine benzyl ester | 72468-46-3

• 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: N²-(tert-butyloxycarbonyl)-N⁵,N⁵-dimethylglutamine benzyl ester
• 英文别名: Boc-NHCH[CH2CH2CON(CH3)2]-OBn；(s)-Benzyl 2-((tert-butoxycarbonyl)amino)-5-(dimethylamino)-5-oxopentanoate；benzyl (2S)-5-(dimethylamino)-2-[(2-methylpropan-2-yl)oxycarbonylamino]-5-oxopentanoate
• CAS: 72468-46-3
• 化学式: C₁₉H₂₈N₂O₅
• 分子量: 364.442
• InChiKey: PUAXRJKHHACRHI-HNNXBMFYSA-N

物化性质

• 熔点：
  97-99 °C
• 沸点：
  517.3±50.0 °C(Predicted)
• 密度：
  1.123±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  26
• 可旋转键数：
  10
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.53
• 拓扑面积：
  84.9
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  N²-(tert-butyloxycarbonyl)-N⁵,N⁵-dimethylglutamine benzyl ester 在 10percent Pd/C 三乙基硅烷 、 氢气 、 溶剂黄146 、 三乙胺 作用下， 以 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 28.25h， 生成 (4S,5RS)-N,N-dimethyl-4-(tert-butyloxycarbonylamino)-5-cyano-5-hydroxypentanamide
  参考文献：
  名称：

  Synthesis and Evaluation of Keto-Glutamine Analogues as Inhibitors of Hepatitis A Virus 3C Proteinase

  摘要：

  Hepatitis A virus (HAV) 3C enzyme is a picornaviral cysteine proteinase involved in the processing of the initially synthesized viral polyprotein and is therefore important for viral maturation and infectivity, Although it is a cysteine proteinase, this enzyme has a topology similar to those of the chymotrypsin-like serine proteinases. Since the enzyme recognizes peptide substrates with a glutamine residue at the P, site, a number of ketone-containing glutamine compounds analogous to nanomolar inhibitors of cathepsin K were synthesized and tested for inhibition against HAV 3C proteinase. In addition, a 3-azetidinone scaffold was incorporated into the glutamine fragment but gave only modest inhibition. However, introduction of a phthalhydrazido group a to the ketone moiety gave significantly better inhibitors with IC50 values ranging from 13 to 164 muM, presumably due to the effect of intramolecular hydrogen bonding to the ketone. In addition, the tetrapeptide phthalhydrazide 24 was found to be a competitive reversible inhibitor (K-i = 9 x 10(-6) M) and also showed no loss of inhibitory potency in the presence of dithiothreitol.

  DOI：

  10.1021/jo0157831
• 作为产物：
  描述：

  N-叔丁氧羰基-L-谷氨酸 1-苄酯 、 盐酸二甲胺 在 1-羟基苯并三唑 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 N,N-二异丙基乙胺 作用下， 以 二氯甲烷 为溶剂， 生成 N²-(tert-butyloxycarbonyl)-N⁵,N⁵-dimethylglutamine benzyl ester
  参考文献：
  名称：

  使用胍基化肽作为多功能配体的远端立体控制：通过乌尔曼交叉偶联实现二芳基甲烷的去对称化

  摘要：

  我们报道了一类新型含胍肽作为过渡金属催化多功能配体的开发及其在通过铜催化乌尔曼交叉偶联二芳基甲烷远程去对称化中的应用。通过这些肽的设计，芳基溴和丙二酸之间的长程不对称交叉偶联（高达 93:7 er 和 76% 产率）实现了高水平的对映诱导和良好的分离产率。我们的机制研究表明，远端立体控制是通过肽的路易斯碱性C端羧酸酯与底物的远端芳烃之间的Cs桥相互作用来实现的。

  DOI：

  10.1021/jacs.6b03444

文献信息

• Oxytocin and lysine-vasopressin with N5,N5-dialkylglutamine in the 4 position: effect of introducing sterically hindered groups into the hydrophilic cluster of neurohypophyseal hormones
  作者：Glenn L. Stahl、Clark W. Smith、Roderich Walter、Theodor Tsegenidis、George Stavropoulos、Paul Cordopatis、Dimitrios Theodoropoulos

  DOI：10.1021/jm00176a020

  日期：1980.2

  The synthesis and pharmacological potencies of oxytocin and lysine-vasopressin analogues are reported in which the N5-amide of their glutaminyl residues are dialkylated. These analogues have been studied as an ongoing exploration of the biological effects on the natural hormones of substituting individually one of the amino acid residues, which has a hydrophilic side chain and which are thought to be part of the hydrophilic surface of the hormones. [4-(N5,N5-Dimethylglutamine)]oxytocin (17), [4-(N5,N5-di-n-propylglutamine)]oxytocin (18), and [4-(N5,N5-dimethylglutamine)] lysine-vasopressin (19) were synthesized by clasical solution techniques. Potencies in the in vitro rat uterotonic, avian vasodepressor, rat pressor, and rat antidiuretic assays were determined and are as follows, respectively: for compound 17 3.01 +/- 0.14 units/mg, 4.55 +/- 0.03 units/mg, tachyphylaxis and tachyphylaxis; for compound 18 less than 0.1, less than 0.1, less than 0.05, and less thad 1.88 +/- 0.04 units/mg. The potencies in all cases are significantly less than those of the parent hormone. The results are discussed in terms of the proposed biologically active conformations of the hormones at the uterotonic receptor and at the antidiuretic receptor.
• Structure-Based Design, Synthesis, and Evaluation of Peptide-Mimetic SARS 3CL Protease Inhibitors
  作者：Kenichi Akaji、Hiroyuki Konno、Hironori Mitsui、Kenta Teruya、Yasuhiro Shimamoto、Yasunao Hattori、Takeshi Ozaki、Masami Kusunoki、Akira Sanjoh

  DOI：10.1021/jm200870n

  日期：2011.12.8

  The design and evaluation of low molecular weight peptide-based severe acute respiratory syndrome (SARS) chymotrypsin-like protease (3CL) protease inhibitors are described. A substrate-based peptide aldehyde was selected as a starting compound, and optimum side-chain structures were determined, based on a comparison of inhibitory activities with Michael type inhibitors. For the efficient screening of peptide aldehydes containing a specific C-terminal residue, a new approach employing thioacetal to aldehyde conversion mediated by N-bromosuccinimide was devised. Structural optimization was carried out based on X-ray crystallographic analyses of the R1881 SARS 3CL protease in a complex with each inhibitor to provide a tetrapeptide aldehyde with an IC50 value of 98 nM. The resulting compound carried no substrate sequence, except for a P-3 site directed toward the outside of the protease. X-ray crystallography provided insights into the protein-ligand interactions.
• Distal Stereocontrol Using Guanidinylated Peptides as Multifunctional Ligands: Desymmetrization of Diarylmethanes via Ullman Cross-Coupling
  作者：Byoungmoo Kim、Alex J. Chinn、Daniel R. Fandrick、Chris H. Senanayake、Robert A. Singer、Scott J. Miller

  DOI：10.1021/jacs.6b03444

  日期：2016.6.29

  guanidine-containing peptides as multifunctional ligands for transition-metal catalysis and its application in the remote desymmetrization of diarylmethanes via copper-catalyzed Ullman cross-coupling. Through design of these peptides, high levels of enantioinduction and good isolated yields were achieved in the long-range asymmetric cross-coupling (up to 93:7 er and 76% yield) between aryl bromides and malonates

  我们报道了一类新型含胍肽作为过渡金属催化多功能配体的开发及其在通过铜催化乌尔曼交叉偶联二芳基甲烷远程去对称化中的应用。通过这些肽的设计，芳基溴和丙二酸之间的长程不对称交叉偶联（高达 93:7 er 和 76% 产率）实现了高水平的对映诱导和良好的分离产率。我们的机制研究表明，远端立体控制是通过肽的路易斯碱性C端羧酸酯与底物的远端芳烃之间的Cs桥相互作用来实现的。
• Synthesis and Evaluation of Keto-Glutamine Analogues as Inhibitors of Hepatitis A Virus 3C Proteinase
  作者：Yeeman K. Ramtohul、Michael N. G. James、John C. Vederas

  DOI：10.1021/jo0157831

  日期：2002.5.1

  Hepatitis A virus (HAV) 3C enzyme is a picornaviral cysteine proteinase involved in the processing of the initially synthesized viral polyprotein and is therefore important for viral maturation and infectivity, Although it is a cysteine proteinase, this enzyme has a topology similar to those of the chymotrypsin-like serine proteinases. Since the enzyme recognizes peptide substrates with a glutamine residue at the P, site, a number of ketone-containing glutamine compounds analogous to nanomolar inhibitors of cathepsin K were synthesized and tested for inhibition against HAV 3C proteinase. In addition, a 3-azetidinone scaffold was incorporated into the glutamine fragment but gave only modest inhibition. However, introduction of a phthalhydrazido group a to the ketone moiety gave significantly better inhibitors with IC50 values ranging from 13 to 164 muM, presumably due to the effect of intramolecular hydrogen bonding to the ketone. In addition, the tetrapeptide phthalhydrazide 24 was found to be a competitive reversible inhibitor (K-i = 9 x 10(-6) M) and also showed no loss of inhibitory potency in the presence of dithiothreitol.