N-(allyloxycarbonyl)-L-threonine (methoxyethoxy)ethyl ester | 176207-56-0

• 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-(allyloxycarbonyl)-L-threonine (methoxyethoxy)ethyl ester
• 英文别名: 2-(2-methoxyethoxy)ethyl (2S,3R)-3-hydroxy-2-(prop-2-enoxycarbonylamino)butanoate
• CAS: 176207-56-0
• 化学式: C₁₃H₂₃NO₇
• 分子量: 305.328
• InChiKey: INQFFTVCNLHSJP-MNOVXSKESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0
• 重原子数：
  21
• 可旋转键数：
  13
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.69
• 拓扑面积：
  103
• 氢给体数：
  2
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  N-(allyloxycarbonyl)-L-threonine (methoxyethoxy)ethyl ester 在 四氮唑 、 叔丁基过氧化氢 、 phosphate buffer 、 L-半胱氨酸 、 二异丙胺 、 papain 作用下， 以 二氯甲烷 、 丙酮 、 乙腈 为溶剂， 反应 20.17h， 生成 N-Allyloxycarbonyl-O-(3'-O-acetyl-6-N-phenylacetyl-2'-deoxyadenosyl-allyl-phosphato)-L-threonine
  参考文献：
  名称：

  Chemoenzymatic Synthesis of Nucleopeptides

  摘要：

  Nucleoproteins, in which the hydroxy group of a serine, a threonine, or a tyrosine, is linked through a phosphodiester group to the 3'- or 5'-end of DNA or RNA, play decisive roles in important biological processes. They may even have a major part in the process of viral replication by nucleoprotein-primed elongation of the oligonucleotide strand. For the study of the biological phenomena, in which nucleoproteins are involved, nucleopeptides with the characteristic linkage between the peptide chain and the oligonucleotide of their parent nucleoproteins may serve as powerful tools. However, the synthesis of these compounds is complicated by their pronounced acid- and base-lability, as well as their multifunctionality. As a result, protecting groups, which can be removed under the mildest conditions, are required. For the construction of such peptide conjugates using a flexible building block strategy, a combination of enzyme-labile and chemical protecting groups was developed. The C-terminal blocking function can be removed selectively from fully protected nucleoamino acid methyl, 2-methoxyethyl (ME), and methoxyethoxyethyl (MEE) esters by saponification of the esters. After elongation of the peptide chain with amino acid or peptide methyl, ME, MEE, and choline esters, the C-terminal ester blocking group can again be removed easily. The methyl, ME, and MEE esters are cleaved off with lipase, and the choline ester group is selectively attacked by butyrylcholine esterase. The nucleoamino acids and peptides formed may be fully deprotected. To this end, the enzyme-labile N-phenylacetyl (PhAc) group, which was employed to mask the amino functions of the nucleobases, was removed. The O-acetate in the deoxyribose was saponified, and the allyl protecting groups present were cleaved by Pd-0-mediated allyl transfer. By combination of these techniques, a nucleopeptide was produced, which represents the characteristic linkage region of the nucleoprotein of adenovions 2. The conditions, under which the enzymatic deprotections proceed, are so mild that no undesired side reaction is observed, that is no depurination or beta elimination of the nucleosides occurs. In addition, the specificity of the biocatalysts ensures that the peptide bonds and the other protecting groups present are not attacked either.

  DOI：

  10.1002/(sici)1521-3765(19990201)5:2<669::aid-chem669>3.0.co;2-v
• 作为产物：
  描述：

  二乙二醇单甲醚 在 N,N-二异丙基乙胺 作用下， 以 二氯甲烷 、 苯 为溶剂， 反应 25.0h， 生成 N-(allyloxycarbonyl)-L-threonine (methoxyethoxy)ethyl ester
  参考文献：
  名称：

  使用脂肪酶和木瓜蛋白酶从O-糖基氨基酸和肽（甲氧基乙氧基）乙基酯上进行化学选择性去除保护基。

  摘要：

  O-糖肽（甲氧基乙氧基）乙酯的选择性C末端脱保护是在温和条件下（pH 6.6，37摄氏度），通过木瓜蛋白酶或木脂酶M的脂肪酶M酶促水解实现的，从而提供了可用于扩链糖肽合成的结构单元。另一方面，从糖肽的糖部分选择性除去乙酰基保护基团是通过用脂肪酶WG从小麦胚芽中进行选择性酶水解，为酶促糖基转移反应提供模型底物来实现的，以延长这些缀合物的碳水化合物侧链。 。

  DOI：

  10.1021/jo951899j

文献信息

• Chemoenzymatic Synthesis of Nucleopeptides
  作者：Stefanie Flohr、Volker Jungmann、Herbert Waldmann

  DOI：10.1002/(sici)1521-3765(19990201)5:2<669::aid-chem669>3.0.co;2-v

  日期：1999.2.1

  Nucleoproteins, in which the hydroxy group of a serine, a threonine, or a tyrosine, is linked through a phosphodiester group to the 3'- or 5'-end of DNA or RNA, play decisive roles in important biological processes. They may even have a major part in the process of viral replication by nucleoprotein-primed elongation of the oligonucleotide strand. For the study of the biological phenomena, in which nucleoproteins are involved, nucleopeptides with the characteristic linkage between the peptide chain and the oligonucleotide of their parent nucleoproteins may serve as powerful tools. However, the synthesis of these compounds is complicated by their pronounced acid- and base-lability, as well as their multifunctionality. As a result, protecting groups, which can be removed under the mildest conditions, are required. For the construction of such peptide conjugates using a flexible building block strategy, a combination of enzyme-labile and chemical protecting groups was developed. The C-terminal blocking function can be removed selectively from fully protected nucleoamino acid methyl, 2-methoxyethyl (ME), and methoxyethoxyethyl (MEE) esters by saponification of the esters. After elongation of the peptide chain with amino acid or peptide methyl, ME, MEE, and choline esters, the C-terminal ester blocking group can again be removed easily. The methyl, ME, and MEE esters are cleaved off with lipase, and the choline ester group is selectively attacked by butyrylcholine esterase. The nucleoamino acids and peptides formed may be fully deprotected. To this end, the enzyme-labile N-phenylacetyl (PhAc) group, which was employed to mask the amino functions of the nucleobases, was removed. The O-acetate in the deoxyribose was saponified, and the allyl protecting groups present were cleaved by Pd-0-mediated allyl transfer. By combination of these techniques, a nucleopeptide was produced, which represents the characteristic linkage region of the nucleoprotein of adenovions 2. The conditions, under which the enzymatic deprotections proceed, are so mild that no undesired side reaction is observed, that is no depurination or beta elimination of the nucleosides occurs. In addition, the specificity of the biocatalysts ensures that the peptide bonds and the other protecting groups present are not attacked either.
• Chemoselective Removal of Protecting Groups from <i>O</i>-Glycosyl Amino Acid and Peptide (Methoxyethoxy)ethyl Esters Using Lipases and Papain
  作者：Jörg Eberling、Peter Braun、Danuta Kowalczyk、Michael Schultz、Horst Kunz

  DOI：10.1021/jo951899j

  日期：1996.1.1

  selective C-terminal deprotection of O-glycopeptide (methoxyethoxy)ethyl esters is achieved under mild conditions (pH 6.6, 37 degrees C) by enzymatic hydrolysis using papain or lipase M from Mucor javanicus to give building blocks useful for chain-extending glycopeptide synthesis. On the other hand, the selective removal of acetyl protecting groups from the saccharide portion of glycopeptides is accomplished

  O-糖肽（甲氧基乙氧基）乙酯的选择性C末端脱保护是在温和条件下（pH 6.6，37摄氏度），通过木瓜蛋白酶或木脂酶M的脂肪酶M酶促水解实现的，从而提供了可用于扩链糖肽合成的结构单元。另一方面，从糖肽的糖部分选择性除去乙酰基保护基团是通过用脂肪酶WG从小麦胚芽中进行选择性酶水解，为酶促糖基转移反应提供模型底物来实现的，以延长这些缀合物的碳水化合物侧链。 。