Val-Asp(OtBu)-Val-Gly-NH2 | 1028255-53-9

• 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: Val-Asp(OtBu)-Val-Gly-NH2
• 英文别名: H-Val-Asp(OtBu)(OtBu)-Val-Gly-NH2；tert-butyl (3S)-3-[[(2S)-2-amino-3-methylbutanoyl]amino]-4-[[(2S)-1-[(2-amino-2-oxoethyl)amino]-3-methyl-1-oxobutan-2-yl]amino]-4-oxobutanoate
• CAS: 1028255-53-9
• 化学式: C₂₀H₃₇N₅O₆
• 分子量: 443.544
• InChiKey: WUBRDBJJPZJIAY-RCBQFDQVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.2
• 重原子数：
  31
• 可旋转键数：
  13
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  183
• 氢给体数：
  5
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  Val-Asp(OtBu)-Val-Gly-NH2 在 N-甲基吗啉 、 1-羟基苯并三唑 、 N,N'-二环己基碳二亚胺 、 三氟乙酸 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 27.0h， 生成 Tyr-D-Ala-Phe-Val-Asp-Val-Gly-NH2
  参考文献：
  名称：

  Unique sequence in deltorphin C confers structural requirement for δ opioid receptor selectivity

  摘要：

  A series of deltorphin C (H-Tyr-D-Ala-Phe-Asp-Val-Val-Gly-NH2) analogues were synthesized to assess the consequences of changing anionic and hydrophobic residues on delta receptor selectivity. Analogues with altered C-terminal groups, inverted sequences, or esterified with tert-butyl, benzyl, or ethyl groups revealed that high delta selectivity required an unmodified amino acid sequence. Shifts of Asp and hydrophobic residues decreased delta selectivity due to loss in delta affinity (5- to almost-equal-to 700-fold); mu affinity was unchanged or increased 14-fold. Suppression of charge or deamidation diminished delta selectivity through reduced delta and modified mu affinities. Data provide evidence that a negative charge does not a priori guarantee high selectivity and specific alignment of anionic and hydrophobic residues might facilitate optimum spatial configuration which complements the 8 receptor binding site.

  DOI：

  10.1016/0223-5234(92)90113-f
• 作为产物：
  描述：

  N-苄氧羰基-L-缬氨酸琥珀酰亚胺酯 在 palladium on activated charcoal 氢气 、 1-羟基苯并三唑 、 N,N-二异丙基乙胺 作用下， 以 溶剂黄146 、 N,N-二甲基甲酰胺 、 异丙醇 为溶剂， 25.0 ℃ 、101.33 kPa 条件下， 生成 Val-Asp(OtBu)-Val-Gly-NH2
  参考文献：
  名称：

  Unique sequence in deltorphin C confers structural requirement for δ opioid receptor selectivity

  摘要：

  A series of deltorphin C (H-Tyr-D-Ala-Phe-Asp-Val-Val-Gly-NH2) analogues were synthesized to assess the consequences of changing anionic and hydrophobic residues on delta receptor selectivity. Analogues with altered C-terminal groups, inverted sequences, or esterified with tert-butyl, benzyl, or ethyl groups revealed that high delta selectivity required an unmodified amino acid sequence. Shifts of Asp and hydrophobic residues decreased delta selectivity due to loss in delta affinity (5- to almost-equal-to 700-fold); mu affinity was unchanged or increased 14-fold. Suppression of charge or deamidation diminished delta selectivity through reduced delta and modified mu affinities. Data provide evidence that a negative charge does not a priori guarantee high selectivity and specific alignment of anionic and hydrophobic residues might facilitate optimum spatial configuration which complements the 8 receptor binding site.

  DOI：

  10.1016/0223-5234(92)90113-f