(S)-5-(benzyloxy)-2-((tert-butoxycarbonyl)amino)-5-oxopentanoic (ethyl carbonic) anhydride | 147471-66-7

• 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)-5-(benzyloxy)-2-((tert-butoxycarbonyl)amino)-5-oxopentanoic (ethyl carbonic) anhydride
• CAS: 147471-66-7
• 化学式: C₂₀H₂₇NO₈
• 分子量: 409.436
• InChiKey: OAQASFLWXAUWRH-HNNXBMFYSA-N

物化性质

• 密度：
  1.191±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  29.0
• 可旋转键数：
  8.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  117.23
• 氢给体数：
  1.0
• 氢受体数：
  8.0

反应信息

• 作为反应物：
  描述：

  (S)-5-(benzyloxy)-2-((tert-butoxycarbonyl)amino)-5-oxopentanoic (ethyl carbonic) anhydride 在 盐酸 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 甲醇 为溶剂， 反应 2.5h， 生成 (S)-4-Amino-4-methylcarbamoyl-butyric acid benzyl ester
  参考文献：
  名称：

  关于选择阻滞剂的研究。5.基于修饰的丝氨酸-谷氨酸二肽的唾液酸化的Lewis x模拟物的设计，合成和生物学特征。

  摘要：

  我们基于分子模型合理设计了sLe（x）模拟物，合成了II型和II'型β-转二肽（3a，b），并在体外和体内评估了它们的生物学特性。针对E-选择素-sLe（x）结合，II型β-转二肽L-Ser-D-Glu 3a（IC50，13 microM）和II'β-转二肽D-Ser-L-Glu 3b（ IC50（5.5 microM）比sLe（x）（1; IC50，600 microM）和3'-硫酸化Le（x）类似物（2; IC50，280 microM）强效阻滞剂高20-100倍。另一方面，其他立体异构体（例如L-Ser-L-Glu 3c和D-Ser-D-Glu 3d）是非常弱的阻滞剂，3c，d的IC50> 1000 microM。相对于P-和L-选择素，尽管化合物3a-d的立体化学差异很大，但二肽3a-d的阻滞剂均比sLe（x）或化合物2强。在小鼠模型中，化合物3b提供了针对免疫球蛋白E介导的皮肤反

  DOI：

  10.1021/jm970262k
• 作为产物：
  描述：

  L-谷氨酸 γ-苄酯 在 三乙胺 作用下， 以 1,4-二氧六环 、 二氯甲烷 、 水 为溶剂， 反应 0.75h， 生成 (S)-5-(benzyloxy)-2-((tert-butoxycarbonyl)amino)-5-oxopentanoic (ethyl carbonic) anhydride
  参考文献：
  名称：

  Synthesis and neuroprotective activity of analogues of glycyl-l-prolyl-l-glutamic acid (GPE) modified at the α-carboxylic acid

  摘要：

  The synthesis of nine GPE* analogues, wherein the alpha-carboxylic acid group of glutamic acid has been modified, is described by coupling readily accessible N-benzyloxycarbonyl-glycyl-L-proline 2 with various analogues of glutamic acid. Pharmacological evaluation of the novel compounds was undertaken to further understand the role of the glutamate residue on the observed neuroprotective properties of the endogenous tripeptide GPE. (C) 2004 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2004.10.005

文献信息

• Design, Synthesis and Biological Evaluation of a Library of Thiocarbazates and Their Activity as Cysteine Protease Inhibitors
  作者：Zhuqing Liu、Michael C. Myers、Parag P. Shah、Mary Pat Beavers、Phillip A. Benedetti、Scott L. Diamond、Amos B. Smith,III、Donna M. Huryn

  DOI：10.2174/138620710791054303

  日期：2010.5.1

  Recently, we identified a novel class of potent cathepsin L inhibitors, characterized by a thiocarbazate warhead. Given the potential of these compounds to inhibit other cysteine proteases, we designed and synthesized a library of thiocarbazates containing diversity elements at three positions. Biological characterization of this library for activity against a panel of proteases indicated a significant preference for members of the papain family of cysteine proteases over serine, metallo-, and certain classes of cysteine proteases, such as caspases. Several potent inhibitors of cathepsin L and S were identified. The SAR data were employed in docking studies in an effort to understand the structural elements required for cathepsin S inhibition. This study provides the basis for the design of highly potent and selective inhibitors of the papain family of cysteine proteases.

  最近，我们鉴定出一类新型高效组织蛋白酶L抑制剂，其特点是具有硫卡巴脒头部结构。鉴于这些化合物有可能抑制其他半胱氨酸蛋白酶，我们设计并合成了一系列硫卡巴脒类化合物，这些化合物在三个位点上含有多样性元素。该化合物的生物活性鉴定结果显示，它们对木瓜蛋白酶家族的半胱氨酸蛋白酶相较于丝氨酸、金属蛋白酶以及某些类别的半胱氨酸蛋白酶（如胱天蛋白酶）表现出显著的选择性。我们鉴定出了几个高效的组织蛋白酶L和S抑制剂。通过对接研究，我们利用SAR数据来理解实现组织蛋白酶S抑制所需的结构要素。这项研究为设计高度有效且选择性的木瓜蛋白酶家族半胱氨酸蛋白酶抑制剂奠定了基础。
• Continuous flow synthesis of β-amino acids from α-amino acids via Arndt–Eistert homologation
  作者：Vagner D. Pinho、Bernhard Gutmann、C. Oliver Kappe

  DOI：10.1039/c4ra08113g

  日期：——

  A fully continuous four step process for the preparation of β-amino acids from their corresponding α-amino acids utilizing the Arndt–Eistert homologation approach is described.

  描述了使用Arndt-Eistert同源方法从其相应的α-氨基酸制备β-氨基酸的完全连续的四步过程。
• CuI-Promoted One-Pot Synthesis of N-Boc Protected β-Ketotriazole Amino Acids: Application in the Synthesis of New Class of Dipeptidomimetics
  作者：T. M. Vishwanatha、N. Narendra、Vommina V. Sureshbabu

  DOI：10.2174/092986612799363172

  日期：2012.3.1

  One-pot click chemistry of Nα-Boc-bromomethylketones, NaN3 and propiolic acid affords N-Boc protected 1,4- disubstituted 1,2,3-β-ketotriazole acids in good to excellent yield. The use of CuI as catalyst and DMSO as solvent leads the click reaction to efficient, practical and column-free preparation of the title compounds. The utility of the resulting unnatural amino acids as building blocks to prepare triazole possessing peptidomimetics is also delineated.

  Nα-Boc-溴甲基酮、NaN3和丙炔酸的一锅点击化学反应以良好至优异的产率提供了N-Boc保护的1,4-二取代1,2,3-β-酮三唑酸。使用CuI作为催化剂和DMSO作为溶剂使得点击反应变得高效、实用且无需柱层析即可制备标题化合物。还阐述了所得非天然氨基酸作为构建模块制备含三唑的类肽的实用性。
• Synthesis of a peptide with delicious taste.
  作者：Yoshio YAMASAKI、Kazuyuki MAEKAWA

  DOI：10.1271/bbb1961.44.93

  日期：——

  In order to confirm the primary structure of a delicious peptide which was isolated from extracts of the beef meat, a peptide, H-Lys-Gly-Asp-Glu-Glu-Ser-Leu-Ala-OH, was synthetized. Both of the synthetized peptide and isolated one were identical as shown in many respects.

  为了确认从牛肉提取物中分离出的美味肽的主要结构，合成了一种肽，H-Lys-Gly-Asp-Glu-Glu-Ser-Leu-Ala-OH。合成肽与分离肽在许多方面都显示出了相同性。
• Linear and cyclic β3-oligopeptides with functionalised side-chains (-CH2OBn, -CO2Bn, -CH2CH2CO2Bn) derived from serine and from aspartic and glutamic acid
  作者：Jennifer L. Matthews、Karl Gademann、Bernhard Jaun、Dieter Seebach

  DOI：10.1039/a805478i

  日期：——

  The natural β-amino acid derivative Boc-Asp(β-OH)-OBn, as well as Boc-β-HGlu(OBn)-OH and Boc-β-HSer(OBn)-OH (prepared from appropriately protected glutamic acid and serine, respectively, by Arndt–Eistert homologation), were employed as building blocks for the synthesis of linear (11–20) and cyclic (21–23) β-oligopeptides consisting of two to six β-amino acids [using trichloroethyl (TCE) ester groups for C-terminal protection and pentafluorophenyl-ester activation for macrocyclisation]. While the linear derivatives are soluble enough for reactions and structural investigations in solution, the cyclo-β-tri- and -hexapeptides are not (according to FT-IR measurements they form networks of hydrogen bonds, perhaps consisting of so-called nanotubes). The CD spectra of the Boc–OTCE-protected (19) and of the unprotected (20) β-hexapeptides [β-Asp(OBn)-β-HGlu(OBn)-β-HSer(OBn)]2 differ drastically, and only the unprotected form shows the familiar pattern of a negative Cotton effect between 210 and 220 nm (indicative of a 314 helix). An NMR analysis in methanol of the β-hexapeptide 20 with free termini reveals the presence of a single, central, left-handed helix turn (14-membered hydrogen-bonded ring). The results are discussed and compared with those obtained previously for analogous β-peptides carrying non-functionalised side chains.

  天然的β-氨基酸衍生物Boc-Asp(β-OH)-OBn，以及Boc-β-HGlu(OBn)-OH和Boc-β-HSer(OBn)-OH（分别通过Arndt-Eistert同系化法从适当保护的谷氨酸和丝氨酸制备），被用作合成由2到6个β-氨基酸组成的线性（11-20）和环状（21-23）β-寡肽的构建模块[使用三氯乙基（TCE）酯基团进行C端保护和五氟苯酯激活进行大环化]。尽管线性衍生物在溶液中足以用于反应和结构研究，但环状β-三肽和六肽则不然（根据FT-IR测量，它们形成了氢键网络，可能是由所谓的纳米管组成）。Boc-OTCE保护的六肽（19）和无保护的六肽（20）[β-Asp(OBn)-β-HGlu(OBn)-β-HSer(OBn)]2的CD光谱存在显著差异，只有无保护形式在210到220 nm之间显示熟悉的负Cotton效应模式（表明为314螺旋）。在甲醇中对自由末端的六肽20进行NMR分析揭示了存在一个中心、左旋的螺旋转弯（14元氢键环）。结果进行了讨论并与先前获得的具有非功能化侧链的类似β-肽的结果进行了比较。