D-Valine methyl ester

• 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: D-Valine methyl ester
• 英文别名: H-(D)Val-OMe；methyl D-valinate；methyl (2R)-2-amino-3-methylbutanoate
• 化学式: C₆H₁₃NO₂
• 分子量: 131.175
• InChiKey: CEMZBWPSKYISTN-RXMQYKEDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.6
• 重原子数：
  9
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  52.3
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  D-Valine methyl ester 在 Streptomyces spp. 83D₁₂ D-aminopeptidase 作用下， 以 二甲基亚砜 为溶剂， 反应 0.08h， 生成 D-缬氨酸
  参考文献：
  名称：

  Aminolytic reaction catalyzed by d-stereospecific amidohydrolases from Streptomyces spp

  摘要：

  From investigation of 2000 soil isolates, we identified two serine-type amidohydrolases that can hydrolyze D-aminoacyl derivatives from the culture supernatant of Streptomyces species 82F2 and 83D12. The enzymes, redesignated as 82F2-DAP and 83D12-DAP, were purified for homogeneity and characterized. Each enzyme had molecular mass of approximately 40 kDa, and each showed moderate stability with respect to temperature and pH. Among hydrolytic activities toward D-aminoacyl-pNAs, the enzymes showed strict specificity toward D-Phe-pNA, but showed broad specificity toward D-aminoacyl esters. The specific activity for D-Phe-pNA hydrolysis of 82F2-DAP was ten-fold higher than that of 83D12-DAP. As a second function, each enzyme showed peptide bond formation activity by its function of aminolysis reaction. Based on results of D-Phe D-Phe synthesis under various conditions, we propose a reaction mechanism for D-Phe D-Phe production. Furthermore, the enzymes exhibited peptide elongation activity, producing oligo homopeptide in a one-pot reaction. We cloned the genes encoding each enzyme, which revealed that the primary structure of each enzyme showed 30-60% identity with those of peptidases belonging to the clan SE, S12 peptidase family categorized as serine peptidase with D-stereospecificity. (C) 2011 Elsevier Masson SAS. All rights reserved.

  DOI：

  10.1016/j.biochi.2011.04.020
• 作为产物：
  描述：

  N-苄氧羰基-D-缬氨酸 在 palladium on activated charcoal N-甲基吗啉 、 盐酸 、 正丁基锂 、 氨 、 氢气 、 氯甲酸异丁酯 作用下， 以 四氢呋喃 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 120.0h， 生成 D-Valine methyl ester
  参考文献：
  名称：

  Stereospecific synthesis of α-deuteriated α-amino acids: regiospecific deuteriation of chiral 3-isopropyl-2,5-dimethoxy-3,6-dihydropyrazines

  摘要：

  Base-catalysed deuteriation of (3R)- or (3S)-3-isopropyl-2.5-dimethoxy-3,6-dihydropyrazines in refluxing (CH3OH)-H-2-(H2O)-H-2 gives the [6-H-2(2)]-isotopomer in excellent yields without disturbing the stereogenic centre at C-3. These compounds provide convenient and efficient access to a range of (R)- and (S)-alpha-deuteriated alpha-amino acids, including serine, aspartic acid, allylglycine and phenylalanine, via alkylation of the butyllithium generated C-6 anion.

  DOI：

  10.1039/p19950000157

文献信息

• Inhibition of angiotensin converting enzyme and potentiation of bradykinin by retro-inverso analogues of short peptides and sequences related to angiotensin I and bradykinin
  作者：Adriana K. Carmona、Luiz Juliano

  DOI：10.1016/0006-2952(96)00047-0

  日期：1996.4

  pharmacological evidence indicating that, in addition to the inhibition of angiotensin converting enzyme (ACE; EC 3.4.15.1), the potentiation of bradykinin (BK) responses may also involve the BK receptor or some binding site in the structures involved in the contractile response to this peptide. Dipeptides such as Val-Trp and some of its analogues as well as tripeptide homologues, including total and partial retro-inverso

  有药理学证据表明，除了抑制血管紧张素转化酶（ACE; EC 3.4.15.1），缓激肽（BK）反应的增强作用还可能涉及BK受体或参与收缩的结构中的某些结合位点对这种肽的反应。合成了二肽（如Val-Trp及其一些类似物）以及三肽同源物（包括全部和部分逆反肽），并测定了它们抑制纯化的豚鼠血浆ACE以及增强BK对分离物的作用的能力。回肠相同的物种。含有P2-P1，P1-P'1和P'1-P'2反向酰胺键的肽可抑制ACE，对水解具有抵抗力，并且取决于氨基酸组成，其中一些增强了对BK的收缩反应，而另一些则没有。Des- [Arg1] -BK，在高于10（-5）M的浓度下具有固有活性，与非常相似的血管紧张素I（AI）类似物[Cys5-Cys10]-血管紧张素I-（5-10）-没有可检测的收缩活性的酰胺能够抑制ACE并增强BK。与这些肽相反，Bothrops jararaca毒液的BPP5a和BPP9a以及Agkistrodon
• Application of Sequential Palladium Catalysis for the Discovery of Janus Kinase Inhibitors in the Benzo[<i>c</i>]pyrrolo[2,3-<i>h</i>][1,6]naphthyridin-5-one (BPN) Series
  作者：Mohamed S. A. Elsayed、Jeffery J. Nielsen、Sungtae Park、Jeongho Park、Qingyang Liu、Chang H. Kim、Yves Pommier、Keli Agama、Philip S. Low、Mark Cushman

  DOI：10.1021/acs.jmedchem.8b00510

  日期：2018.12.13

  The present account describes the discovery and development of a new benzo[c]pyrrolo[2,3-h][1,6]naphthyridin-5-one (BPN) JAK inhibitory chemotype that has produced selective JAK inhibitors. Sequential palladium chemistry was optimized for the rapid access to a focused library of derivatives to explore the structure–activity relationships of the new scaffold. Several compounds from the series displayed

  该文献描述了已经产生选择性JAK抑制剂的新型苯并[ c ]吡咯并[2，3- h ] [1，6]萘啶-5-酮（BPN）JAK抑制化学型的发现和开发。优化了顺序钯化学，可快速访问聚焦的衍生物库，以探索新支架的结构与活性之间的关系。该系列中的几种化合物对JAK家族的四个成员具有不同选择性的低纳摩尔浓度范围。具有氮杂环丁烷酰胺侧链的化合物20a显示出对JAK1激酶相对于JAK2，JAK3和TYK2的最佳选择性，且纳摩尔浓度低（IC 50 = 3.4 nM）。另一方面，BPN 17b和18对JAK家族具有良好的总体活性，并具有优异的kinome选择性特征。许多新的BPN抑制JAK3介导的STAT-5磷酸化，炎性细胞因子的产生以及原代T细胞的增殖。此外，在类风湿性关节炎动物模型中，BPN 17b的体内结果与托法替尼非常相似。
• SUBSTITUTED NUCLEOSIDES, NUCLEOTIDES AND ANALOGS THEREOF
  申请人：Alios BioPharma, Inc.

  公开号：US20150105341A1

  公开（公告）日：2015-04-16

  Disclosed herein are nucleosides, nucleotides and nucleotide analogs, methods of synthesizing the same and methods of treating diseases and/or conditions such as a Picornavirus and/or Flaviviridae infection with one or more nucleosides, nucleotides and nucleotide analogs.

  本文披露了核苷、核苷酸和核苷酸类似物，以及它们的合成方法以及利用一个或多个核苷、核苷酸和核苷酸类似物治疗如小核糖核病毒和/或黄病毒科感染等疾病和/或症状的方法。
• Kinetic resolution of amines with enantiopure 3-N,N-diacylaminoquinazolin-4(3H)-ones
  作者：Al-Sehemi, Abdullah G.、Atkinson, Robert S.、Fawcett, John

  DOI：10.1039/b105917n

  日期：2002.1.7

  The title compounds (DAQs) are chiral when the two N-acyl groups are different because of the absence of rotation around the N–N bond (a chiral axis). Enantiopure DAQs have been obtained by incorporation of a chiral centre in enantiopure form either into the substituent at the Q2-position or into one of the N-acyl groups, or into both, followed by separation of diastereoisomers. This separation is unnecessary in one case because conversion of the N-monoacylaminoquinazolinone (MAQ) into the DAQ is completely diastereoselective. Neither is separation of diastereoisomers necessary with 3-[N,N-di-(S)-2-acetoxypropanoylamino]-2-diphenylmethylquinazolin-4(3H)-one 37a: this DAQ 37a has its N–N bond rendered a chiral axis by the bias in its imide moiety wholly in favour of one exo/endo conformation.The high chemoselectivity exhibited by N,N-diacetyl- or N,N-dibenzoylaminoquinazolinones in reaction with the less hindered of two secondary amines (pyrrolidine in the presence of 1 eq. of piperidine) has a stereoselective counterpart: reaction of the above enantiopure DAQs enantioselectively with racemic amines leading to kinetic resolution. Using 1 eq. of DAQ and 2 eq. of amine, both the derivatised and unreacted amine enantiomers are recovered with high enantiomeric excess (ee) (better than 90% ee in some cases). Some of the higher ees are found in the recovered amides where non-chemoselective attack on both N-acyl groups of the DAQ has occurred: from the opposite configurations of the amine component in the two amides and from the low enantiopurity of the recovered unreacted amine, reaction of each of the N-acyl groups with complementary enantiomers of the amine is occurring (parallel kinetic resolution).Although higher ees are, in general, obtained using secondary amines, high ees are obtained in some cases using 1-phenylethylamine and, in particular, amino acid esters (valine and alanine).The sense of enantioselectivity in the reactions of these DAQs with amines is controlled by the configuration of the N–N axis: replacing the Q group in an N-(S)-2-acetoxypropanoyl-N-acetyl-bearing DAQ by phthalimide, thus eliminating the N–N chiral axis, drastically reduces the level of kinetic resolution.

  标题化合物(DAQs)在两个N-酰基团不同时是手性的，因为N-N键（一个手性轴）缺乏旋转。通过将手性中心以手性形式引入Q2-位点的取代基或其中一个N-酰基团，或两者中，随后分离diastereoisomers，得到了纯对映体的DAQs。在一个情况下，这种分离是不必要的，因为将N-单酰胺基喹唑啉酮(MAQ)转化为DAQ是完全立体选择性的。对于3-[N,N-di-(S)-2-乙酰氧基丙酰胺基]-2-二苯甲基喹唑啉-4(3H)-酮37a，也不需要分离diastereoisomers：这个DAQ 37a通过其亚胺部分的偏向完全倾向于一个exo/endo构象，使其N-N键成为一个手性轴。N,N-二乙酰基或N,N-二苯甲酰氨基喹唑啉酮在与两个次级胺中较少受到阻碍的胺（在存在1 eq.的哌啶的情况下使用吡咯烷）反应时表现出高度的化学选择性，这在立体选择性上有对应：上述纯对映体的DAQs与外消旋胺反应，导致动力学拆分。使用1 eq.的DAQ和2 eq.的胺，衍生化的和未反应的胺对映体都以高对映体过量（ee）回收（在一些情况下优于90% ee）。在一些回收的酰胺中发现较高的ee，其中非化学选择性地攻击DAQ的两个N-酰基团：从两个酰胺中胺组分的相反构型和回收的未反应胺的低对映纯度，每个N-酰基团与胺的互补对映体反应（并行动态拆分）。尽管通常使用次级胺得到较高的ee，但在某些情况下使用1-苯乙胺，特别是氨基酸酯（缬氨酸和丙氨酸）得到高ee。这些DAQs与胺反应的对映选择性的方向受N-N轴配置的控制：在带有N-(S)-2-乙酰氧基丙酰基-N-乙酰基的DAQ中，通过用邻苯二甲酰亚胺替换Q组，从而消除N-N手性轴，显著降低了动力学拆分的水平。
• Discovery of C-1 modified oseltamivir derivatives as potent influenza neuraminidase inhibitors
  作者：Han Ju、Jian Zhang、Zhuosen Sun、Zheng Huang、Wenbao Qi、Bing Huang、Peng Zhan、Xinyong Liu

  DOI：10.1016/j.ejmech.2018.01.050

  日期：2018.2

  Inspired by our initial discovery about a series of neuraminidase (NA) inhibitors targeting the 150-cavity, in present study, we designed, synthesized, and biologically tested a panel of novel oseltamivir derivatives with C-1 modification, targeting the 430-cavity, an additional binding site which widely and stably existed in both group-1 and group-2 NAs. Some of the synthesized compounds displayed

  受我们最初发现一系列针对150腔的神经氨酸酶（NA）抑制剂的启发，在本研究中，我们设计，合成并生物测试了一系列具有C-1修饰作用的新型奥司他韦衍生物，针对430腔，在第1组和第2组NA中广泛稳定地存在的另一个结合位点。一些合成的化合物对H5N1和H5N6病毒显示出强大的抗流感效力。其中，化合物8b对H5N1和H5N6菌株的抑制作用最大，IC50值为0.088和0.097μM，EC50值为4.26和1.31μM，与奥司他韦羧酸盐（OSC）相似。而且它对突变H5N1-H274Y NA的效力比OSC弱7倍。分子模型揭示了在C-1位置的细长基团被投射向430腔。值得注意的是，尽管在胚胎蛋模型中化合物8b对H5N1菌株相对于OSC不敏感，但在浓度为10 mmol / L的情况下，它对H5N6菌株的抗流感病毒作用比对OSC更大。总体而言，这项工作为发现针对第1组和第2组NA的有效抑制剂提供了独特的见解。