N-benzyl-N-(tert-butoxycarbonylamino)-L-isoleucine | 188777-47-1

• 物质功能分类: 生物化工 - 氨基酸及其衍生物 - 异亮氨酸类衍生物
• 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: N-benzyl-N-(tert-butoxycarbonylamino)-L-isoleucine
• 英文别名: L-N-benzyl-N-(tert-butoxycarbonylamino)isoleucine；(2S,3S)-2-[benzyl-[(2-methylpropan-2-yl)oxycarbonylamino]amino]-3-methylpentanoic acid
• CAS: 188777-47-1
• 化学式: C₁₈H₂₈N₂O₄
• 分子量: 336.431
• InChiKey: VOVAEVRERZBTPA-ZFWWWQNUSA-N

物化性质

• 熔点：
  103-109°C
• 密度：
  1.112±0.06 g/cm3(Predicted)
• 稳定性/保质期：
  遵照规定使用和储存，则不会分解。

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  24
• 可旋转键数：
  9
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  78.9
• 氢给体数：
  2
• 氢受体数：
  5

安全信息

• 海关编码：
  2928000090

反应信息

• 作为反应物：
  描述：

  N-benzyl-N-(tert-butoxycarbonylamino)-L-isoleucine 在 N-甲基吗啉 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 为溶剂， 反应 2.08h， 生成 Boc-NH(Bzl)Ile-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 In hydrazinopeptides 3-5, the Ala5, Val4, or Pro3 residue, respectively, of the model peptide, has been replaced by the corresponding alpha-L-hydrazino acid.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：

  t-butyl 3-(trichloromethyl)-1,2-oxaziridine-2-carboxylate 、 以 二氯甲烷 为溶剂， 以3.51 g的产率得到N-benzyl-N-(tert-butoxycarbonylamino)-L-isoleucine
  参考文献：
  名称：

  N-Boc-恶唑烷胺氨基酸的亲电胺化：N-正交双保护的肼二酸和哌嗪酸衍生物的高效制备

  摘要：

  对映体纯n的一般两步制备α，N β -orthogonally双保护的α-肼基酸1是在多克规模开发的。关键反应是将N-苄基氨基酸6与N -Boc-恶唑烷7进行有效的亲电胺化反应，并容纳氨基酸侧链中遇到的各种官能团。环状2,3,4,5-四氢-3-哒嗪羧酸（哌嗪酸）衍生物2和3或环状3,4-二氢-3-吡唑羧酸酯4方便地由谷氨酸或天冬氨酸经正交双保护制备。 α-肼基酸1m和1n。

  DOI：

  10.1021/jo035700b

文献信息

• Electrophilic Amination of Amino Acids with N-Boc-oxaziridines:  Efficient Preparation of N-Orthogonally Diprotected Hydrazino Acids and Piperazic Acid Derivatives
  作者：Jean-Christophe Hannachi、Joëlle Vidal、Jean-Christophe Mulatier、André Collet

  DOI：10.1021/jo035700b

  日期：2004.4.1

  preparation of enantiopure Nα,Nβ-orthogonally diprotected α-hydrazino acids 1 is developed on a multigram scale. The key reaction is the efficient electrophilic amination of N-benzyl amino acids 6 with N-Boc-oxaziridine 7 and accommodates various functional groups encountered in side chains of amino acids. The cyclic 2,3,4,5-tetrahydro-3-pyridazine carboxylic acid (piperazic acid) derivatives 2 and 3 or

  对映体纯n的一般两步制备α，N β -orthogonally双保护的α-肼基酸1是在多克规模开发的。关键反应是将N-苄基氨基酸6与N -Boc-恶唑烷7进行有效的亲电胺化反应，并容纳氨基酸侧链中遇到的各种官能团。环状2,3,4,5-四氢-3-哒嗪羧酸（哌嗪酸）衍生物2和3或环状3,4-二氢-3-吡唑羧酸酯4方便地由谷氨酸或天冬氨酸经正交双保护制备。 α-肼基酸1m和1n。
• 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.