Boc-NHIle

• 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: Boc-NHIle
• 英文别名: (N'-Boc)-N-aminoisoleucine；(2S,3S)-3-methyl-2-[2-[(2-methylpropan-2-yl)oxycarbonyl]hydrazinyl]pentanoic acid
• 化学式: C₁₁H₂₂N₂O₄
• 分子量: 246.307
• InChiKey: RDBJYDZNGRJFKE-YUMQZZPRSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.3
• 重原子数：
  17
• 可旋转键数：
  7
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.82
• 拓扑面积：
  87.7
• 氢给体数：
  3
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  Boc-NHIle 在 盐酸 、 1-羟基苯并三唑 、 三乙胺 、 N,N'-二环己基碳二亚胺 作用下， 以 四氢呋喃 、 乙酸乙酯 为溶剂， 生成 Z-Val-NHIle-Leu-OMe
  参考文献：
  名称：

  Design and Synthesis of Hydrazinopeptides and Their Evaluation as Human Leukocyte Elastase Inhibitors

  摘要：

  The name hydrazinopeptide designates peptidic structures in which one of the native CONH links is replaced by a CONHNH (hydrazido) fragment. In this paper, we report the synthesis of such hydrazinohexapeptides (3-5) analogous to Z-Ala-Ala-Pro-Val-Ala-Ala-(NHPr)-Pr-i (6), a substrate of human leukocyte elastase (HLE; EC 3.4.21.37), cleaved by this serine protease between the Val4 and Ala5 residues. In hydrazinopeptides 3-5, the Ala5, Val4, or Pro3 residue, respectively, of the model peptide, has been replaced by the corresponding alpha-L-hydrazino acid. In 3, the bond likely to be cleaved by HLE is the one involving the CONHNH link, while in 4 and 5, this link is normally shifted away by one or two amino acid units from the catalytic serine. On incubation with HLE, hydrazinopeptide 3 proved to be a substrate and was cleaved between Val4 and NHAla5, like peptide 6. In contrast, 4 and 5 proved to bind to HLE without being cleaved, featuring properties consistent with reversible competitive inhibition. General guidelines for the synthesis of hydrazinopeptides are also reported in this paper. These guidelines take into account the chemical specificity of hydrazino acids, while being fully compatible with the conventional peptide coupling techniques. The utilization of orthogonally bisprotected hydrazino acids 1 where the N-beta and N-alpha atoms bear a Boc and a Bzl group, respectively, is recommended for the easy construction of such hydrazinopeptides.

  DOI：

  10.1021/jm980419o
• 作为产物：
  描述：

  (2R,3R)-methyl 2-hydroxy-3-methylpentanoate 在 2,6-二甲基吡啶 、 lithium hydroxide monohydrate 作用下， 以 四氢呋喃 、 二氯甲烷 、 水 为溶剂， 反应 19.0h， 生成 Boc-NHIle
  参考文献：
  名称：

  四氢哒嗪二酮限制肽的固相合成

  摘要：

  报道了衍生自骨架胺化肽的四氢哒嗪-3,6-二酮 (Tpd) 肽模拟物的设计和固相合成。所描述的协议的特点是手性 α-肼酸的合成适用于化学选择性掺入不断增长的肽链。在裂解过程中酸催化环化形成 Tpd 环以良好的产率和纯度提供目标肽模拟物。Tpd 掺入的范围通过合成具有亲核/亲电侧链和空间位阻的 α-取代肼酸残基的受限肽来证明。

  DOI：

  10.1021/ol5026684

文献信息

• N-amination of amino acids and its derivatives using N-Boc-O-tosyl hydroxylamine as an efficient NH-Boc transfer reagent: electrophilic amination
  作者：Thankappan Baburaj、Sivalingam Thambidurai

  DOI：10.1016/j.tetlet.2012.02.075

  日期：2012.5

  biologically active heterocyclic derivatives, were synthesized by electrophilic amination methodology using N-Boc-O-tosyl hydroxylamine as an efficient NH-Boc transfer reagent. Also, we have demonstrated the conversion of other amino acid derivatives such as amino esters and amino alcohols into β-Boc-hydrazino derivatives using this reagent.

  使用N -Boc- O-甲苯磺酰基羟胺作为有效的NH-Boc转移试剂，通过亲电胺化方法合成了末端叔丁氧羰基（Boc）保护的肼基酸，这些肽是修饰肽和生物活性杂环衍生物的有用中间体。另外，我们已经证明了使用该试剂将其他氨基酸衍生物如氨基酯和氨基醇转化为β-Boc-肼基衍生物。
• Solid-Phase Synthesis of Tetrahydropyridazinedione-Constrained Peptides
  作者：Chang Won Kang、Sujeewa Ranatunga、Matthew P. Sarnowski、Juan R. Del Valle

  DOI：10.1021/ol5026684

  日期：2014.10.17

  acids suitable for chemoselective incorporation into growing peptide chains. Acid-catalyzed cyclization to form the Tpd ring during cleavage affords the target peptidomimetics in good yield and purity. The scope of Tpd incorporation is demonstrated through the synthesis of constrained peptides featuring nucleophilic/electrophilic side chains and sterically encumbered α-substituted hydrazino acid residues

  报道了衍生自骨架胺化肽的四氢哒嗪-3,6-二酮 (Tpd) 肽模拟物的设计和固相合成。所描述的协议的特点是手性 α-肼酸的合成适用于化学选择性掺入不断增长的肽链。在裂解过程中酸催化环化形成 Tpd 环以良好的产率和纯度提供目标肽模拟物。Tpd 掺入的范围通过合成具有亲核/亲电侧链和空间位阻的 α-取代肼酸残基的受限肽来证明。
• Design and Synthesis of Hydrazinopeptides and Their Evaluation as Human Leukocyte Elastase Inhibitors
  作者：Laure Guy、Joëlle Vidal、André Collet、Augustin Amour、Michèle Reboud-Ravaux

  DOI：10.1021/jm980419o

  日期：1998.11.1

  The name hydrazinopeptide designates peptidic structures in which one of the native CONH links is replaced by a CONHNH (hydrazido) fragment. In this paper, we report the synthesis of such hydrazinohexapeptides (3-5) analogous to Z-Ala-Ala-Pro-Val-Ala-Ala-(NHPr)-Pr-i (6), a substrate of human leukocyte elastase (HLE; EC 3.4.21.37), cleaved by this serine protease between the Val4 and Ala5 residues. In hydrazinopeptides 3-5, the Ala5, Val4, or Pro3 residue, respectively, of the model peptide, has been replaced by the corresponding alpha-L-hydrazino acid. In 3, the bond likely to be cleaved by HLE is the one involving the CONHNH link, while in 4 and 5, this link is normally shifted away by one or two amino acid units from the catalytic serine. On incubation with HLE, hydrazinopeptide 3 proved to be a substrate and was cleaved between Val4 and NHAla5, like peptide 6. In contrast, 4 and 5 proved to bind to HLE without being cleaved, featuring properties consistent with reversible competitive inhibition. General guidelines for the synthesis of hydrazinopeptides are also reported in this paper. These guidelines take into account the chemical specificity of hydrazino acids, while being fully compatible with the conventional peptide coupling techniques. The utilization of orthogonally bisprotected hydrazino acids 1 where the N-beta and N-alpha atoms bear a Boc and a Bzl group, respectively, is recommended for the easy construction of such hydrazinopeptides.