methyl (2R)-2-[[(2S)-1-[(2S)-2-[(4-acetyloxyphenyl)methoxycarbonylamino]-4-methylpentanoyl]pyrrolidine-2-carbonyl]amino]-3-[(2E,6E)-3,7,11-trimethyldodeca-2,6,10-trienyl]sulfanylpropanoate | 170892-90-7

• 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: methyl (2R)-2-[[(2S)-1-[(2S)-2-[(4-acetyloxyphenyl)methoxycarbonylamino]-4-methylpentanoyl]pyrrolidine-2-carbonyl]amino]-3-[(2E,6E)-3,7,11-trimethyldodeca-2,6,10-trienyl]sulfanylpropanoate
• CAS: 170892-90-7
• 化学式: C₄₀H₅₉N₃O₈S
• 分子量: 741.99
• InChiKey: SWSMOELGZPUQMX-NLIAYLCVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  8.1
• 重原子数：
  52
• 可旋转键数：
  23
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  166
• 氢给体数：
  2
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  methyl (2R)-2-[[(2S)-1-[(2S)-2-[(4-acetyloxyphenyl)methoxycarbonylamino]-4-methylpentanoyl]pyrrolidine-2-carbonyl]amino]-3-[(2E,6E)-3,7,11-trimethyldodeca-2,6,10-trienyl]sulfanylpropanoate 在 lipase from Mucor miehei 、 potassium iodide 作用下， 以 甲醇 为溶剂， 反应 12.0h， 以65%的产率得到L-Leucyl-L-prolyl-(S-farnesyl)-L-cysteine methyl ester
  参考文献：
  名称：

  Chemoenzymatic Synthesis of N-Ras Lipopeptides

  摘要：

  For the study of biological phenomena influenced by the plasma-membrane-bound Ras proteins and other lipidated proteins, characteristic peptides which embody the correct lipid modifications of their parent proteins (palmitoyl thioesters and farnesyl thioethers), as well as analogues thereof, may serve as suitable tools. For the construction of such acid- and base-labile peptide conjugates, the enzyme-labile p-acetoxybenzyloxycarbonyl (AcOZ) urethane blocking group was developed. The acetate moiety within the AcOZ group is easily saponified by treatment with acetyl esterase or lipase. After cleavage of the acetate group the resulting quinone methide spontaneously fragments, resulting in the liberation of the desired peptide or peptide conjugates. This enzymatic protecting group technique formed the key step in the synthesis of the characteristic S-palmitoylated and S-farnesylated C-terminus of the human N-Ras protein. Deprotections are so mild that no undesired side reactions of the lipid conjugates are observed (i.e., no hydrolysis or beta-elimination of the thioester and no acid-mediated attack on the double bonds of the farnesyl group). The combination of enzymatic protecting group techniques with classical chemical methods allowed access to various fluorescent-labeled and differently lipid-modified Rns lipopeptides. Their application in biological experiments enabeled the study of the structural requirements for the acylation of Ras sequence motifs in vivo and gave insight into the subcellular site at which these modifications occur. The results indicate that the plasma membrane is a major site of cellular S-acylation. This supports a mechanism for the selective subcellular localization of lipidated proteins, including the Rns proteins themselves, by kinetic targeting to the plasma membrane.

  DOI：

  10.1021/ja9805627
• 作为产物：
  描述：

  4-乙酰氧基苄醇 在 吗啉 、 四(三苯基膦)钯 、 1-羟基苯并三唑 、 1-(3-二甲基氨基丙基)-3-乙基碳二亚胺 、 三乙胺 、 N,N'-二环己基碳二亚胺 作用下， 以 四氢呋喃 、 二氯甲烷 、 甲苯 为溶剂， 反应 37.5h， 生成 methyl (2R)-2-[[(2S)-1-[(2S)-2-[(4-acetyloxyphenyl)methoxycarbonylamino]-4-methylpentanoyl]pyrrolidine-2-carbonyl]amino]-3-[(2E,6E)-3,7,11-trimethyldodeca-2,6,10-trienyl]sulfanylpropanoate
  参考文献：
  名称：

  Chemoenzymatic Synthesis of N-Ras Lipopeptides

  摘要：

  For the study of biological phenomena influenced by the plasma-membrane-bound Ras proteins and other lipidated proteins, characteristic peptides which embody the correct lipid modifications of their parent proteins (palmitoyl thioesters and farnesyl thioethers), as well as analogues thereof, may serve as suitable tools. For the construction of such acid- and base-labile peptide conjugates, the enzyme-labile p-acetoxybenzyloxycarbonyl (AcOZ) urethane blocking group was developed. The acetate moiety within the AcOZ group is easily saponified by treatment with acetyl esterase or lipase. After cleavage of the acetate group the resulting quinone methide spontaneously fragments, resulting in the liberation of the desired peptide or peptide conjugates. This enzymatic protecting group technique formed the key step in the synthesis of the characteristic S-palmitoylated and S-farnesylated C-terminus of the human N-Ras protein. Deprotections are so mild that no undesired side reactions of the lipid conjugates are observed (i.e., no hydrolysis or beta-elimination of the thioester and no acid-mediated attack on the double bonds of the farnesyl group). The combination of enzymatic protecting group techniques with classical chemical methods allowed access to various fluorescent-labeled and differently lipid-modified Rns lipopeptides. Their application in biological experiments enabeled the study of the structural requirements for the acylation of Ras sequence motifs in vivo and gave insight into the subcellular site at which these modifications occur. The results indicate that the plasma membrane is a major site of cellular S-acylation. This supports a mechanism for the selective subcellular localization of lipidated proteins, including the Rns proteins themselves, by kinetic targeting to the plasma membrane.

  DOI：

  10.1021/ja9805627

文献信息

• Waldmann, Herbert; Naegele, Edgar, Angewandte Chemie, 1995, vol. 107, # 20, p. 2425 - 2428
  作者：Waldmann, Herbert、Naegele, Edgar

  DOI：——

  日期：——