(E)-(S)-4-Amino-5-methyl-hex-2-enoic acid ethyl ester | 244033-79-2

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: (E)-(S)-4-Amino-5-methyl-hex-2-enoic acid ethyl ester
• CAS: 244033-79-2
• 化学式: C₉H₁₇NO₂
• 分子量: 171.239
• InChiKey: KBDVTFUHLDFYAK-HQZHTGGTSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.09
• 重原子数：
  12.0
• 可旋转键数：
  4.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  52.32
• 氢给体数：
  1.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  (E)-(S)-4-Amino-5-methyl-hex-2-enoic acid ethyl ester 在 N-羟基-7-氮杂苯并三氮唑 、 caesium carbonate 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 47.0h， 生成 (3S,3aR,4S,7aR)-2-benzyl-3-isopropyl-6-methyl-1-oxo-1,2,3,3a,4,7a-hexahydro-pyrano[3,4-c]pyrrole-4-carboxylic acid ethyl ester
  参考文献：
  名称：

  An intramolecular oxo Diels–Alder approach to 1-oxo-1,2,3,3a,4,7a-hexahydro-pyrano[3,4-c]pyrrole-4-carboxylic acid ethyl esters

  摘要：

  The diastereoselective synthesis of a series of 1-oxo-1,2,3,3a,4,7a-hexahydro-pyrano[3,4-c]pyrrole-4-carboxylic acid ethyl esters via an oxo Diels-Alder reaction is described. Ab initio calculations predicted the products of the exo cycloaddition to be the thermodynamic products while the products resulting from the endo cycloaddition were predicted to be the kinetic products. The calculations were born out by experimental data. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2003.04.007
• 作为产物：
  描述：

  N-Boc-L-缬氨酸 在 N-甲基吗啉 、 lithium aluminium tetrahydride 、 potassium tert-butylate 、 三氟乙酸 、 氯甲酸异丁酯 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 生成 (E)-(S)-4-Amino-5-methyl-hex-2-enoic acid ethyl ester
  参考文献：
  名称：

  Synthesis of densely functionalized pyrrolidinone templates by an intramolecular oxo-Diels–Alder reaction

  摘要：

  Preparation of densely functionalized pyrrolidinone templates, is a challenge for synthetic chemists. These templates are important building blocks for novel conformationally constrained natural products or for library generation of highly functionalized bi or polycyclic compounds. We discovered that trienes 6a-j undergo facile stereoselective intramolecular Diels-Alder reactions to generate densely functionalized cis fused pyrrolidinone templates 1a-j. These reactions allow for directed remote hydroxylation with complete control of stereochemistry. (C) 2002 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(02)01711-2

文献信息

• Synthesis of α, β-unsaturated γ-amino esters with unprecedented high (E)-stereoselectivity and their conformational analysis in peptides
  作者：Sachitanand M. Mali、Anupam Bandyopadhyay、Sandip V. Jadhav、Mothukuri Ganesh Kumar、Hosahudya N. Gopi

  DOI：10.1039/c1ob05732d

  日期：——

  Mild, efficient and racemization-free synthesis of N-protected α, β-unsaturated γ-amino esters with unprecedented high E- stereoselectivity is described. This method is found to be compatible with Boc-, Fmoc- and other side chain protecting groups. The crystal conformations of the vinylogous γ-amino esters in monomers and in homo- and mixed dipeptides are studied. Further, the vinylogous homo-dipeptide showed a β-sheet conformation, while mixed α- and α,β-unsaturated γ-hybrid dipeptide adapted an irregular structure in single crystals.

  描述了一种温和、高效且无光学异构化的N保护α, β-不饱和γ-氨基酯的合成方法，该方法具有前所未有的高E型立体选择性。该方法与Boc、Fmoc及其他侧链保护基团相容。研究了单体和同源及混合二肽中乙烯基γ-氨基酯的晶体构象。此外，乙烯基同源二肽显示出β-折叠构象，而混合的α型和α,β-不饱和γ-杂合二肽在单晶中适应了不规则结构。