Ac-His-DPhe(pCH3)-Arg-Trp-NH2 | 1051488-57-3

• 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: Ac-His-DPhe(pCH3)-Arg-Trp-NH2
• 英文别名: (2S)-2-[[(2R)-2-[[(2S)-2-acetamido-3-(1H-imidazol-5-yl)propanoyl]amino]-3-(4-methylphenyl)propanoyl]amino]-N-[(2S)-1-amino-3-(1H-indol-3-yl)-1-oxopropan-2-yl]-5-(diaminomethylideneamino)pentanamide
• CAS: 1051488-57-3
• 化学式: C₃₅H₄₅N₁₁O₅
• 分子量: 699.813
• InChiKey: NBONRIOTXHNHPH-ZXYZSCNASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.4
• 重原子数：
  51
• 可旋转键数：
  18
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.34
• 拓扑面积：
  268
• 氢给体数：
  9
• 氢受体数：
  7

反应信息

• 作为产物：
  描述：

  乙酸酐 、 N-Fmoc-N'-三苯甲基-L-组氨酸 、 Fmoc-L-色氨酸(Boc)-OH 、 FMOC-D-4-甲基苯丙氨酸 、 alkaline earth salt of/the/ methylsulfuric acid 在 Rink amide resin 、 1-羟基苯并三唑 、 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、 N,N-二异丙基乙胺 、 哌啶 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 2.3h， 生成 Ac-His-DPhe(pCH3)-Arg-Trp-NH2
  参考文献：
  名称：

  Melanocortin Tetrapeptide Ac-His-DPhe-Arg-Trp-NH₂ Modified at the Para Position of the Benzyl Side Chain (DPhe): Importance for Mouse Melanocortin-3 Receptor Agonist versus Antagonist Activity

  摘要：

  The melanocortin-3 and -4 receptors (MC3R, MC4R) have been implicated in energy homeostasis and obesity. Whereas the physiological role of the MC4R is extensively studied, little is known about the MC3R. One caveat is the limited availability of ligands that are selective for the MC3R. Previous studies identified Ac-His-DPhe(p-I)-Arg-Trp-NH2, which possessed partial agonist/antagonist pharmacology at the mMC3R while retaining full nanomolar agonist pharrnacology at the mMC4R. These data allowed for the hypothesis that the DPhe position in melanocortin tetrapeptides can be used to examine ligand side-chain determinants important for differentiation of mMC3R agonist versus antagonist activity. A series of 15 DPhe(7) modified Ac-His-DPhe(7)-Arg-Trp-NH2 tetrapeptides has been synthesized and pharmacologically characterized. Most notable results include the identification of modifications that resulted in potent antagonists/partial agonists at the mMC3R and full, potent agonists at the mMC4R. These SAR studies provide experimental evidence that the molecular mechanism of antagonism at the mMC3R differentiates this subtype from the mMC4R.

  DOI：

  10.1021/jm800291b

文献信息

• Melanocortin Tetrapeptide Ac-His-DPhe-Arg-Trp-NH₂ Modified at the Para Position of the Benzyl Side Chain (DPhe): Importance for Mouse Melanocortin-3 Receptor Agonist versus Antagonist Activity
  作者：Bettina Proneth、Irina D. Pogozheva、Federico P. Portillo、Henry I. Mosberg、Carrie Haskell-Luevano

  DOI：10.1021/jm800291b

  日期：2008.9.25

  The melanocortin-3 and -4 receptors (MC3R, MC4R) have been implicated in energy homeostasis and obesity. Whereas the physiological role of the MC4R is extensively studied, little is known about the MC3R. One caveat is the limited availability of ligands that are selective for the MC3R. Previous studies identified Ac-His-DPhe(p-I)-Arg-Trp-NH2, which possessed partial agonist/antagonist pharmacology at the mMC3R while retaining full nanomolar agonist pharrnacology at the mMC4R. These data allowed for the hypothesis that the DPhe position in melanocortin tetrapeptides can be used to examine ligand side-chain determinants important for differentiation of mMC3R agonist versus antagonist activity. A series of 15 DPhe(7) modified Ac-His-DPhe(7)-Arg-Trp-NH2 tetrapeptides has been synthesized and pharmacologically characterized. Most notable results include the identification of modifications that resulted in potent antagonists/partial agonists at the mMC3R and full, potent agonists at the mMC4R. These SAR studies provide experimental evidence that the molecular mechanism of antagonism at the mMC3R differentiates this subtype from the mMC4R.