(S)-2-amino-N,3-dimethylbutanamide hydrochloride | 87105-26-8

• 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)-2-amino-N,3-dimethylbutanamide hydrochloride
• 英文别名: (2S)-2-amino-N,3-dimethylbutanamide hydrochloride；(2S)-2-amino-N,3-dimethylbutanamide;hydrochloride
• CAS: 87105-26-8
• 化学式: C₆H₁₄N₂O*ClH
• mdl: MFCD11041210
• 分子量: 166.651
• InChiKey: PPEBJEOKRFEESV-JEDNCBNOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.27
• 重原子数：
  10
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.833
• 拓扑面积：
  55.1
• 氢给体数：
  3
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (S)-2-amino-N,3-dimethylbutanamide hydrochloride 在 palladium on activated charcoal 盐酸 、 氢气 、 1-羟基苯并三唑 、 1-(3-二甲基氨基丙基)-3-乙基碳二亚胺 、 三乙胺 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 6.0h， 生成
  参考文献：
  名称：

  A Noncovalent Approach to Antiparallel β-Sheet Formation

  摘要：

  Four tripeptide chains, when attached to the same end of a hydrogen-bonded duplex (1.2) with the unsymmetrical, complementary sequences of ADAA/DADD, have been brought into proximity, leading to the formation of four hybrid duplexes, 1a.2a, 1a.2b, 1b.2a, and 1b.2b, each of which contains a two-stranded beta-sheet segment. The extended conformations of the peptide chains were confirmed by 1D and 2D NMR. The peptide strands stay registered through hydrogen bonding and the beta-sheets are stabilized by side chain interactions. Two-dimensional NMR data also indicate that the duplex template prevents further aggregation in the peptide segment. When the peptide chains are attached to the two different termini of the duplex template, NMR studies show the presence of a mixture with no clearly defined conformations. In the absence of the duplex template, the tripeptides are found to associate randomly. Finally, isothermal titration calorimetry studies revealed that the hybrid duplex 1a.2a was more stable than either the duplex template or the peptides alone.

  DOI：

  10.1021/ja010701b
• 作为产物：
  描述：

  CBZ-L-缬氨酸 在 palladium on activated charcoal 盐酸 、 氢气 、 三甲基乙酰氯 、 三乙胺 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 6.0h， 生成 (S)-2-amino-N,3-dimethylbutanamide hydrochloride
  参考文献：
  名称：

  A Noncovalent Approach to Antiparallel β-Sheet Formation

  摘要：

  Four tripeptide chains, when attached to the same end of a hydrogen-bonded duplex (1.2) with the unsymmetrical, complementary sequences of ADAA/DADD, have been brought into proximity, leading to the formation of four hybrid duplexes, 1a.2a, 1a.2b, 1b.2a, and 1b.2b, each of which contains a two-stranded beta-sheet segment. The extended conformations of the peptide chains were confirmed by 1D and 2D NMR. The peptide strands stay registered through hydrogen bonding and the beta-sheets are stabilized by side chain interactions. Two-dimensional NMR data also indicate that the duplex template prevents further aggregation in the peptide segment. When the peptide chains are attached to the two different termini of the duplex template, NMR studies show the presence of a mixture with no clearly defined conformations. In the absence of the duplex template, the tripeptides are found to associate randomly. Finally, isothermal titration calorimetry studies revealed that the hybrid duplex 1a.2a was more stable than either the duplex template or the peptides alone.

  DOI：

  10.1021/ja010701b

文献信息

• Methylene-Bridged Bis(imidazoline)-Derived 2-Oxopyrimidinium Salts as Catalysts for Asymmetric Michael Reactions
  作者：Andrey E. Sheshenev、Ekaterina V. Boltukhina、Andrew J. P. White、King Kuok Mimi Hii

  DOI：10.1002/anie.201300614

  日期：2013.7.1

  In nothing flat: The title salts, having planar nitrogen centers, were utilized successfully as phase‐transfer catalysts for asymmetric Michael reactions of tert‐butyl glycinate benzophenone Schiff base with vinyl ketone and chalcone derivatives, thus providing excellent levels of diastereo‐ and enantiocontrol (see scheme).

  一言以蔽之：具有平面氮中心的标题盐被成功地用作甘氨酸叔丁酯二苯甲酮席夫碱与乙烯基酮和查尔酮衍生物的不对称迈克尔反应的相转移催化剂，从而提供了极好的非对映和对映控制水平（见方案）。
• Mechanistic Studies on the Organocatalytic α‐Chlorination of Aldehydes: The Role and Nature of Off‐Cycle Intermediates
  作者：Sebastian Ponath、Martina Menger、Lydia Grothues、Manuela Weber、Dieter Lentz、Carsten Strohmann、Mathias Christmann

  DOI：10.1002/anie.201806261

  日期：2018.9.3

  Herein we report the isolation and characterization of aminal intermediates in the organocatalytic α‐chlorination of aldehydes. These species are stable covalent ternary adducts of the substrate, the catalyst and the chlorinating reagent. NMR‐assisted kinetic studies and isotopic labeling experiments with the isolated intermediate did not support its involvement in downstream stereoselective processes

  在这里，我们报告了醛的有机催化 α-氯化中缩醛胺中间体的分离和表征。这些物质是底物、催化剂和氯化试剂的稳定共价三元加合物。NMR 辅助动力学研究和分离中间体的同位素标记实验不支持其参与 Blackmond 提出的下游立体选择性过程。通过调整氯化试剂的反应性，我们能够抑制限速非循环中间体的积累。因此，开发了一种高效且高度对映选择性的催化体系，具有广泛的官能团耐受性。
• New Chiral Zwitterionic Phosphorus Heterocycles: Synthesis, Structure, Properties and Application as Chiral Solvating Agents
  作者：Andrey E. Sheshenev、Ekaterina V. Boltukhina、Anastasiya A. Grishina、Ivana Cisařova、Ilya M. Lyapkalo、King Kuok Mimi Hii

  DOI：10.1002/chem.201300062

  日期：2013.6.17

  A family of new chiral zwitterionic phosphorus‐containing heterocycles (zPHC) have been derived from methylene‐bridged bis(imidazolines). These structures were unambiguously determined, including single‐crystal XRD analysis for two compounds. The stability, acid/base and electronic properties of these dipolar phosphorus heterocycles were subsequently investigated. zPHCs can be successfully employed

  一个新的手性两性离子含磷杂环（zPHC）家族衍生自亚甲基桥双（咪唑啉）。明确确定了这些结构，包括对两种化合物的单晶XRD分析。随后研究了这些偶极磷杂环的稳定性，酸/碱和电子性质。zPHCs可以成功地用作一类新的手性溶剂化剂，用于通过NMR光谱对手性羧酸和磺酸进行对映异构化。通过NMR滴定法确定了形成的供体-受体复合物的化学计量和结合常数。
• [EN] SUBSTITUTED PYRROLIZINE COMPOUNDS AND USES THEREOF<br/>[FR] COMPOSÉS DE PYRROLIZINE SUBSTITUÉS ET LEURS UTILISATIONS
  申请人：GILEAD SCIENCES INC

  公开号：WO2018039531A1

  公开（公告）日：2018-03-01

  This application relates to substituted fused pyrrole compounds of formula I, and pharmaceutical compositions comprising them which inhibit HBV replication, and methods of making and using them. Formula (I)

  这种应用涉及到式I的取代融合吡咯化合物，以及包含它们的抑制HBV复制的药物组合物，以及制备和使用它们的方法。公式（I）
• Nickel-Catalyzed <i>ortho</i>-C-H Thiolation of <i>N</i>-Benzoyl α-Amino Acid Derivatives
  作者：Feng Gao、Wei Zhu、Dengyou Zhang、Shuangjie Li、Jiang Wang、Hong Liu

  DOI：10.1021/acs.joc.6b01702

  日期：2016.10.7

  nickel-catalyzed direct ortho-thiolation of N-benzoyl α-amino acid derivatives. This novel strategy showed wide generality, functional tolerance, and high regioselectivity. In addition, dipeptide derivatives were also compatible with this transformation system, providing a potential protocol for the direct modification of peptide derivatives.

  我们开发了第一个镍催化的N-苯甲酰基α-氨基酸衍生物的直接邻硫醇化反应。这种新颖的策略显示出广泛的通用性，功能耐受性和高区域选择性。另外，二肽衍生物也与此转化系统相容，为直接修饰肽衍生物提供了可能的方案。