Boc-o-Nip(Bn)-OEt | 168702-62-3

• 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-o-Nip(Bn)-OEt
• 英文别名: Ethyl 2-[(2-methylpropan-2-yl)oxycarbonylamino]-3-(5-nitro-2-phenylmethoxyphenyl)propanoate
• CAS: 168702-62-3
• 化学式: C₂₃H₂₈N₂O₇
• 分子量: 444.485
• InChiKey: LBNQBWISSXBSEB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  32
• 可旋转键数：
  11
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.39
• 拓扑面积：
  120
• 氢给体数：
  1
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  Boc-o-Nip(Bn)-OEt 在 palladium on activated charcoal N-甲基吗啉 、 lithium hydroxide 、 氢气 、 三乙胺 、 N,N'-二环己基碳二亚胺 、 三氟乙酸 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 溶剂黄146 、 N,N-二甲基甲酰胺 为溶剂， -10.0~25.0 ℃ 、399.97 Pa 条件下， 反应 2.5h， 生成 methyl (2S)-2-[[(2S)-2-acetamido-3-(5-amino-2-hydroxyphenyl)propanoyl]amino]propanoate
  参考文献：
  名称：

  Design of New Photoactivatable Amino Acids: Stereoselective Synthesis of N-Protected Phenylalanine Derivatives as Precursors of p-Diazocyclohexadienone-Containing Peptides

  摘要：

  4-Diazocyclohexa-2,5-dienone-based amino acids m-Dip and o-Dip were designed for building up photoactivatable peptides. Their stable precursors L-3-[3-(benzyloxy)-6-nitrophenyl]alanine (L-m-Nip(Bn)) and L-3-[2-(benzyloxy)-5-nitrophenyl]alanine (L-o-Nip(Bn)) were synthesized by stereoselective alkylation of the corresponding benzyloxynitrobenzyl iodides by a chiral glycine equivalent. Alkylation was carried out using either butyllithium in dry organic solvents or a phase transfer procedure. Alkylation, hydrolysis of the adduct, and protection as Boc and Fmoc derivatives were achieved in 57-73% overall yields and led to 97-99% optically pure material. Boc or Fmoc-m/o-Nip(Bn) was inserted in model dipeptides Ac-mlo-Nip(Bn)-Ala-OMe or tripeptides Ala-Lm-Nip-(Bn)-Lys and Ala-L-o-Nip(Bn)-Arg, respectively, by homogeneous solution procedure and by solid-phase peptide synthesis. Deprotection and diazotization of the resulting p-hydroxyanilines gave the corresponding photoactivatable 4-diazocyclohexa-2,5-dienones containing peptides in quantitative yields. Such photoprobes are stable for several hours in the dark but are rapidly photolyzed at 350 nm or at 295 nm by a tryptophan-mediated energy transfer activation process.

  DOI：

  10.1021/jo00108a023
• 作为产物：
  描述：

  2-羟基-5-硝基苄醇 在 盐酸 、 sodium hydroxide 、 四丁基硫酸氢铵 、 sodium hydride 、 三乙胺 、 sodium iodide 作用下， 以 四氢呋喃 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 丙酮 为溶剂， 反应 9.67h， 生成 Boc-o-Nip(Bn)-OEt
  参考文献：
  名称：

  Design of New Photoactivatable Amino Acids: Stereoselective Synthesis of N-Protected Phenylalanine Derivatives as Precursors of p-Diazocyclohexadienone-Containing Peptides

  摘要：

  4-Diazocyclohexa-2,5-dienone-based amino acids m-Dip and o-Dip were designed for building up photoactivatable peptides. Their stable precursors L-3-[3-(benzyloxy)-6-nitrophenyl]alanine (L-m-Nip(Bn)) and L-3-[2-(benzyloxy)-5-nitrophenyl]alanine (L-o-Nip(Bn)) were synthesized by stereoselective alkylation of the corresponding benzyloxynitrobenzyl iodides by a chiral glycine equivalent. Alkylation was carried out using either butyllithium in dry organic solvents or a phase transfer procedure. Alkylation, hydrolysis of the adduct, and protection as Boc and Fmoc derivatives were achieved in 57-73% overall yields and led to 97-99% optically pure material. Boc or Fmoc-m/o-Nip(Bn) was inserted in model dipeptides Ac-mlo-Nip(Bn)-Ala-OMe or tripeptides Ala-Lm-Nip-(Bn)-Lys and Ala-L-o-Nip(Bn)-Arg, respectively, by homogeneous solution procedure and by solid-phase peptide synthesis. Deprotection and diazotization of the resulting p-hydroxyanilines gave the corresponding photoactivatable 4-diazocyclohexa-2,5-dienones containing peptides in quantitative yields. Such photoprobes are stable for several hours in the dark but are rapidly photolyzed at 350 nm or at 295 nm by a tryptophan-mediated energy transfer activation process.

  DOI：

  10.1021/jo00108a023

文献信息

• Design of New Photoactivatable Amino Acids: Stereoselective Synthesis of N-Protected Phenylalanine Derivatives as Precursors of p-Diazocyclohexadienone-Containing Peptides
  作者：C. Dugave

  DOI：10.1021/jo00108a023

  日期：1995.2

  4-Diazocyclohexa-2,5-dienone-based amino acids m-Dip and o-Dip were designed for building up photoactivatable peptides. Their stable precursors L-3-[3-(benzyloxy)-6-nitrophenyl]alanine (L-m-Nip(Bn)) and L-3-[2-(benzyloxy)-5-nitrophenyl]alanine (L-o-Nip(Bn)) were synthesized by stereoselective alkylation of the corresponding benzyloxynitrobenzyl iodides by a chiral glycine equivalent. Alkylation was carried out using either butyllithium in dry organic solvents or a phase transfer procedure. Alkylation, hydrolysis of the adduct, and protection as Boc and Fmoc derivatives were achieved in 57-73% overall yields and led to 97-99% optically pure material. Boc or Fmoc-m/o-Nip(Bn) was inserted in model dipeptides Ac-mlo-Nip(Bn)-Ala-OMe or tripeptides Ala-Lm-Nip-(Bn)-Lys and Ala-L-o-Nip(Bn)-Arg, respectively, by homogeneous solution procedure and by solid-phase peptide synthesis. Deprotection and diazotization of the resulting p-hydroxyanilines gave the corresponding photoactivatable 4-diazocyclohexa-2,5-dienones containing peptides in quantitative yields. Such photoprobes are stable for several hours in the dark but are rapidly photolyzed at 350 nm or at 295 nm by a tryptophan-mediated energy transfer activation process.