L-tert-leucine dimethylamide | 198422-08-1

• 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: L-tert-leucine dimethylamide
• 英文别名: (2S)-2-amino-N,N,3,3-tetramethylbutanamide
• CAS: 198422-08-1
• 化学式: C₈H₁₈N₂O
• mdl: MFCD14590436
• 分子量: 158.244
• InChiKey: WQLVEAXQSUHALO-ZCFIWIBFSA-N

物化性质

• 沸点：
  228.4±23.0 °C(Predicted)
• 密度：
  0.935±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.6
• 重原子数：
  11
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.875
• 拓扑面积：
  46.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  L-tert-leucine dimethylamide 在 lithium aluminium tetrahydride 、 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、 N,N-二异丙基乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 3.0h， 生成 tert-butyl ((R)-1-(((S)-1-(dimethylamino)-3,3-dimethylbutan-2-yl)amino)-3,3-dimethyl-1-oxobutan-2-yl)carbamate
  参考文献：
  名称：

  A class of α-amino acids-derived multifunctional amidophosphane precatalysts: application to the highly enantio- and diastereoselective silver(I)-catalyzed 1,3-dipolar cycloaddition reaction

  摘要：

  A class of multifunctional amidophosphanes derived from chiral alpha-amino acids have been developed with two amide bonds, a tertiary amine and a phosphine. In combination with Ag(I) salts, these amidophosphanes have been demonstrated as highly efficient multifunctional catalysts in the asymmetric 1,3-dipolar cycloaddition of azomethine ylides as well as the three-component reaction of the alpha-iminoesters in situ generated. Under optimal conditions, highly functionalized endo-8 pyrrolidines were obtained with good to excellent yields (up to 99% yield) and enantioselectivities (up to 98% ee). (C) 2017 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2017.05.014
• 作为产物：
  描述：

  Cbz-L-叔亮氨酸 在 palladium on activated charcoal N-羟基-7-氮杂苯并三氮唑 、 氢气 、 1-(3-二甲基氨基丙基)-3-乙基碳二亚胺 作用下， 以 甲醇 、 N,N-二甲基甲酰胺 为溶剂， 生成 L-tert-leucine dimethylamide
  参考文献：
  名称：

  Structure–activity relationships of the peptide deformylase inhibitor BB-3497: modification of the P2′ and P3′ side chains

  摘要：

  Structural modifications to the peptide deformylase inhibitor BB-3497 are described. In this paper, we describe the initial SAR around this lead for modifications to both the P2' and P3' side chains. Enzyme inhibition and antibacterial activity data revealed that a variety of substituents are tolerated at the P2' and P3' positions of the inhibitor backbone. The data from this study highlights the potential for modification at the P2' and P3' positions to optimise the physicochemical properties. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/s0960-894x(03)00533-x

文献信息

• SUBSTITUTED IMIDAZOHETEROCYCLES
  申请人：Beckett R. Paul

  公开号：US20080318935A1

  公开（公告）日：2008-12-25

  The present invention provides substituted imidazoheterocyclic compounds having the structure of formula I Also provided are pharmaceutically acceptable salts, acid salts, hydrates, solvates and stereoisomers of the compounds of formula I. The compounds are useful as modulators of cannabinoid receptors and for the prophylaxis and treatment of cannabinoid receptor-associated diseases and conditions, such as pain, inflammation and pruritis.

  本发明提供了具有式I结构的取代咪唑杂环化合物。还提供了式I化合物的药用可接受盐、酸盐、水合物、溶剂合物和立体异构体。这些化合物可用作大麻素受体调节剂，用于预防和治疗与大麻素受体相关的疾病和症状，如疼痛、炎症和瘙痒。
• New Auxiliaries for Copper-Catalyzed Asymmetric Michael Reactions: Generation of Quaternary Stereocenters at Room Temperature
  作者：Jens Christoffers、Alexander Mann

  DOI：10.1002/1521-3765(20010302)7:5<1014::aid-chem1014>3.0.co;2-x

  日期：2001.3.2

  Dialkyl amides of L-valine, L-isoleucine, and L-tert-leucine (2) are excellent chiral auxiliaries for the construction of quaternary stereocenters at ambient temperature. Enaminoesters 3, prepared from these auxiliaries 2 and Michael donors 1, undergo a copper-catalyzed asymmetric Michael reaction with methyl vinyl ketone (MVK, 4) to afford products 5 in 70-90% yield and 90-99% ee (enantiomeric excess)

  L-缬氨酸、L-异亮氨酸和 L-叔亮氨酸 (2) 的二烷基酰胺是在环境温度下构建四元立体中心的极佳手性助剂。由这些助剂 2 和迈克尔供体 1 制备的烯胺酯 3 与甲基乙烯基酮 (MVK, 4) 进行铜催化的不对称迈克尔反应，以 70-90% 的产率和 90-99% 的 ee（对映体过量）提供产物 5 . 不需要排除水分或氧气。助剂2可通过标准程序容易地获得。后处理后，它们几乎可以定量回收。
• Novel bifunctional thiourea–ammonium salt catalysts derived from amino acids: application to highly enantio- and diastereoselective aza-Henry reaction
  作者：Hong-Yu Wang、Zhuo Chai、Gang Zhao

  DOI：10.1016/j.tet.2013.04.079

  日期：2013.6

  development of new efficient and easily accessible catalysts has been one of the focuses in asymmetric phase-transfer catalysis. In this paper, a novel class of chiral bifunctional thiourea–ammonium phase-transfer catalysts were synthesized from commercially available α-amino acids. The structural modularity of these catalysts permits facile tunings to achieve optimum results, which was demonstrated

  新型高效且易于获得的催化剂的开发一直是不对称相转移催化的重点之一。在本文中，从市场上可买到的α-氨基酸合成了一类新型的手性双官能硫脲-铵相转移催化剂。这些催化剂的结构模块性使其易于调节以获得最佳结果，这在催化氮杂-亨利反应中表现出优异的对映选择性（高达99.5％ee）和非对映选择性（高达> 25：1 dr）得到了证明。
• l-tert-Leucine-Derived AmidPhos–Silver(I) Chiral Complexes for the Asymmetric [3+2] Cycloaddition of Azomethine Ylides
  作者：Haifei Wang、Zhipeng Zhou、Xiaojun Zheng、Jialin Liu、Jinlei Li、Pushan Wen

  DOI：10.1055/s-0036-1588137

  日期：——

  The l -tert-leucine-derived AmidPhos/silver(I) catalytic system has been developed for the asymmetric [3+2] cycloaddition of azomethine ylides with electronic-deficient alkenes with or without Et3N. Under optimal conditions, highly functionalized endo-4-pyrrolidines were obtained with modest to high yields (up to 99% yield) and enantioselectivities (up to 98% ee).

  L-叔亮氨酸衍生的 AmidPhos/silver(I) 催化体系已开发用于在有或没有 Et3N 的情况下，偶氮甲碱叶立德与缺电子烯烃的不对称 [3+2] 环加成反应。在最佳条件下，以中等至高产率（高达 99% 的产率）和对映选择性（高达 98% ee）获得高度官能化的内 4-吡咯烷。
• 一种手性含膦和氢键供体的配体及其制备方 法和应用
  申请人：重庆大学

  公开号：CN107383095B

  公开（公告）日：2019-04-16

  本发明涉及一种手性含膦和氢键供体的配体及其制备方法和应用，该配体与金属盐形成配合物后，可用于催化亚甲基甘氨酸酯与丙烯氰发生不对称[3+2]‑偶极环加成反应，并且显示出很高的催化活性和对映选择性，具有很大的应用潜力。