(S)-2-氨基-2-乙基己酸乙酯 | 164262-42-4

• 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
• 中文名称: (S)-2-氨基-2-乙基己酸乙酯
• 英文名称: ethyl (S)-2-amino-2-ethylhexanoate
• 英文别名: (S)-2-Amino-2-ethylhexanoic acid ethyl ester；ethyl (2S)-2-amino-2-ethylhexanoate
• CAS: 164262-42-4
• 化学式: C₁₀H₂₁NO₂
• 分子量: 187.282
• InChiKey: PUFPKUWTAGCFPT-JTQLQIEISA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  13
• 可旋转键数：
  7
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  52.3
• 氢给体数：
  1
• 氢受体数：
  3

安全信息

• 海关编码：
  2922499990

反应信息

• 作为反应物：
  描述：

  (S)-2-氨基-2-乙基己酸乙酯 在 sodium hydroxide 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下， 以 水 、 乙腈 为溶剂， 反应 159.0h， 生成 ethyl trifluoroacetyl-(S)-2-butyl-2-ethylglycyl-(S)-2-butyl-2-ethylglycinate
  参考文献：
  名称：

  The First Fully Planar C ₅ ‐Conformation of Homooligopeptides Prepared from a Chiral α ‐Ethylated α , α ‐Disubstituted Amino Acid: ( S )‐Butylethylglycine (=(2 S )‐2‐Amino‐2‐ethylhexanoic Acid)

  摘要：

  An optically active alpha -ethylated alpha,alpha -disubstituted amino acid, (S)-butylethylglycine (= (2S)-2-amino-2-ethylhexanoic acid; (S)-Beg; (S)-2),was prepared starring from butyl ethyl ketone (1) by the Strecker method and enzymatic kinetic resolution of the racemic amino acid. Homooligopeptides containing (S)-Beg (up to hexapeptide) were synthesized by conventional solution methods. An ethyl cater was used for the protection at the C-terminus, and a trifluoroacetyl group was used for the N-terminus of the peptides. Thr structures of tri- and tetrapeptides 5 and 6 in the solid state were solved by X-ray crystallographic analysis, and were shown to have a bent planar C-conformation (tripeptide) and a fully planar C-5-conformation (tetrapeptide) (see Figs. I and 2, resp.). The IR and H-1-NMR spectra of hexapeptide 8 revealed that the dominant conformation in CDCl3, solution was also a fully planar C-5-conformation, These results show for the first time that the preferred conformation of homopeptides containing a chiral alpha -ethylated alpha,alpha -disubstituted amino acid is a planar C-5-conformation.

  DOI：

  10.1002/1522-2675(20001004)83:10<2823::aid-hlca2823>3.0.co;2-#
• 作为产物：
  描述：

  3-庚酮 在 盐酸 、 porcine liver esterase 、 硫酸 、 氯化铵 作用下， 以 phosphate buffer 、 乙醇 、 水 为溶剂， 反应 79.5h， 生成 (S)-2-氨基-2-乙基己酸乙酯
  参考文献：
  名称：

  The First Fully Planar C ₅ ‐Conformation of Homooligopeptides Prepared from a Chiral α ‐Ethylated α , α ‐Disubstituted Amino Acid: ( S )‐Butylethylglycine (=(2 S )‐2‐Amino‐2‐ethylhexanoic Acid)

  摘要：

  An optically active alpha -ethylated alpha,alpha -disubstituted amino acid, (S)-butylethylglycine (= (2S)-2-amino-2-ethylhexanoic acid; (S)-Beg; (S)-2),was prepared starring from butyl ethyl ketone (1) by the Strecker method and enzymatic kinetic resolution of the racemic amino acid. Homooligopeptides containing (S)-Beg (up to hexapeptide) were synthesized by conventional solution methods. An ethyl cater was used for the protection at the C-terminus, and a trifluoroacetyl group was used for the N-terminus of the peptides. Thr structures of tri- and tetrapeptides 5 and 6 in the solid state were solved by X-ray crystallographic analysis, and were shown to have a bent planar C-conformation (tripeptide) and a fully planar C-5-conformation (tetrapeptide) (see Figs. I and 2, resp.). The IR and H-1-NMR spectra of hexapeptide 8 revealed that the dominant conformation in CDCl3, solution was also a fully planar C-5-conformation, These results show for the first time that the preferred conformation of homopeptides containing a chiral alpha -ethylated alpha,alpha -disubstituted amino acid is a planar C-5-conformation.

  DOI：

  10.1002/1522-2675(20001004)83:10<2823::aid-hlca2823>3.0.co;2-#

文献信息

• Hypolipidemic 1,4-benzothiazepine derivative
  申请人：THE WELLCOME FOUNDATION LIMITED

  公开号：EP1203769A1

  公开（公告）日：2002-05-08

  The invention is concerned with a novel hypolipidemic compound, which is of (3R,5R)-3-Butyl-3-ethyl-2,3,4,5-tetrahydro-7-methoxy-5-phenyl-1,4-benzothiazepin-8-ol 1,1-dioxide; or a salt, solvate, or physiologically functional derivative thereof, with processes for its preparation, pharmaceutical compositions containing it and with its use in medicine, particularly in the prophylaxis and treatment of hyperlipidemic conditions, such as athersclerosis.

  这项发明涉及一种新型降脂化合物，即(3R,5R)-3-丁基-3-乙基-2,3,4,5-四氢-7-甲氧基-5-苯基-1,4-苯并噻吩-8-醇-1,1-二氧化物；或其盐、溶剂合物或生理功能衍生物，以及其制备方法、含有它的药物组合物，以及在医学中的应用，特别是在预防和治疗高脂血症等高脂血症状况中的使用。
• An Extended Planar C5 Conformation and a 310-Helical Structure of Peptide Foldamer Composed of Diverse -Ethylated ,-Disubstituted -Amino Acids
  作者：Masakazu Tanaka、Shin Nishimura、Makoto Oba、Yosuke Demizu、Masaaki Kurihara、Hiroshi Suemune

  DOI：10.1002/chem.200204476

  日期：2003.7.7

  active peptide foldamers Tfa-[(S)-(alphaEt)Leu]-[(S)-(alphaEt)Nva]-Deg-[(S)-(alphaEt)Nle]-OEt (10) and Tfa-[(S)-(alphaEt)Val]-[(S)-(alphaEt)Leu]-[(S)-(alphaEt)Nva]-Deg-[(S)-(alphaEt)Nl e]-OEt (11) composed of diverse alpha-ethylated alpha,alpha-disubstituted alpha-amino acids were synthesized. The dominant conformation of these peptides in solution was an unusual, fully extended planar conformation, and

  光学活性肽折叠剂Tfa-[（S）-（alphaEt）Leu]-[（S-（alphaEt）Nva] -Deg-[（S）-（alphaEt）Nle] -OEt（10）和Tfa-[（ S）-（alphaEt）Val]-[（S）-（alphaEt）Leu]-[（S）-（alphaEt）Nva] -Deg-[（S）-（alphaEt）Nle e] -OEt（11）组成合成了多种α-乙基化的α，α-二取代的α-氨基酸。这些肽在溶液中的主要构象是一个不寻常的，完全延伸的平面构象，并且在晶体状态下是右旋（P）和左旋（M）3（10）螺旋结构，其中10和P图11中的3（10）-螺旋结构。由手性α-乙基化的α，α-二取代的α-氨基酸制备的肽的优选平面C（5）构象与由手性α-甲基化的α，制备的肽的3（10）-螺旋结构完全不同，
• Liu, Weiguo; Ray, Paul; Benezra, Steven A., Journal of the Chemical Society. Perkin transactions I, 1995, # 5, p. 553 - 560
  作者：Liu, Weiguo、Ray, Paul、Benezra, Steven A.

  DOI：——

  日期：——
• JP2015/3861
  申请人：——

  公开号：——

  公开（公告）日：——
• Conformation of Peptides Containing a Chiral -Ethylated ,-Disubstituted -Amino Acid: (S)--Ethylleucine (=(2S)-2-Amino-2-ethyl-4-methylpentanoic Acid) within Sequences of Dimethylglycine and Diethylglycine Residues
  作者：Makoto Oba、Masakazu Tanaka、Masaaki Kurihara、Hiroshi Suemune

  DOI：10.1002/1522-2675(200210)85:10<3197::aid-hlca3197>3.0.co;2-y

  日期：2002.10

  An optically active (S)-alpha-ethylleucine ((S)-alphaEtLeu) as a chiral alpha-ethylated alpha,alpha-disubstituted alpha-amino acid was synthesized by means of a chiral acetal auxiliary of (R,R)-cyclohexane-1,2-diol. The chiral alpha-ethylated alpha,alpha-disubstituted amino acid (S)-alphaEtLeu was introduced into the peptides constructed from 2aminoisobutyric acid (= dimethylglycine, Aib), and also into the peptide prepared from diethylglycine (Deg). The X-ray crystallographic analysis revealed that both right-handed (P) and left-handed (M) 3(10)-helical structures exist in the solid state of CF3CO-(Aib)(2)-[(S)-alphaEtLeu]-(Aib)(2)-OEt (14) and CF3CO-[(S)-alphaEtLeu]-(Deg)(4)-OEt (18), respectively. The IR, CD, and H-1-NMR spectra indicated that the dominant conformation of pentapeptides 14 and CF3CO-[(S)-alphaEtLeu]-(Aib)(4)-OEt (16) in solution is a 3(10)-helical structure, and that of 18 in solution is a planar C-5 conformation. The conformation of peptides was also studied by molecular-mechanics calculations.