Ac-Orn(Z)-(Ala-Aib)2-OPac | 1147767-84-7

• 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: Ac-Orn(Z)-(Ala-Aib)2-OPac
• 英文别名: Ac-Orn(Cbz)-Ala-Aib-Ala-Aib-OGly-Ph；phenacyl 2-[[(2S)-2-[[2-[[(2S)-2-[[(2S)-2-acetamido-5-(phenylmethoxycarbonylamino)pentanoyl]amino]propanoyl]amino]-2-methylpropanoyl]amino]propanoyl]amino]-2-methylpropanoate
• CAS: 1147767-84-7
• 化学式: C₃₇H₅₀N₆O₁₀
• 分子量: 738.838
• InChiKey: JEIAPVKIJMCCDP-QONNDPFASA-N

物化性质

• 沸点：
  1058.6±65.0 °C(predicted)
• 密度：
  1.215±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  53
• 可旋转键数：
  21
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  227
• 氢给体数：
  6
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  Ac-Orn(Z)-(Ala-Aib)2-OPac 、 3-碘苯甲酸 在 氢溴酸 、 溶剂黄146 、 N,N-二异丙基乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 31.0h， 以61%的产率得到Ac-Orn(Bz(3-I))-Ala-Aib-Ala-Aib-OGly-Ph
  参考文献：
  名称：

  Chirally Twisted Oligo(phenyleneethynylene) by Cyclization with α-Helical Peptide

  摘要：

  A novel cyclic conjugate of a helical decapeptide and oligo(phenyleneethynylene) (OPE), C-OPE10, was synthesized. The conformation and the optical properties of the cyclic conjugate were studied by circular dichroism (CD), absorption, and emission spectroscopies. In the cyclic conjugate, the rotational motion around the molecular axis of the OPE moiety was hindered to take a chirally twisted conformation, which is a distorted form from the coplanar conjugated structure, as revealed by observation of an induced negative Cotton effect of the OPE moiety. Molecular simulation using time dependant-density functional theory indicated a right-handed twist conformation of the OPE moiety for the negative Cotton effect. This conjugate therefore provides a new way to obtain a pi-conjugated compound having, main-chain chirality. The optical properties of the OPE moiety taking the twist conformation in the cyclic conjugate are also discussed in depth.

  DOI：

  10.1021/jo9001905
• 作为产物：
  描述：

  、 乙酸酐 在 吡啶 作用下， 以 1,4-二氧六环 、 水 为溶剂， 反应 30.0h， 以630 mg的产率得到Ac-Orn(Z)-(Ala-Aib)2-OPac
  参考文献：
  名称：

  Chirally Twisted Oligo(phenyleneethynylene) by Cyclization with α-Helical Peptide

  摘要：

  A novel cyclic conjugate of a helical decapeptide and oligo(phenyleneethynylene) (OPE), C-OPE10, was synthesized. The conformation and the optical properties of the cyclic conjugate were studied by circular dichroism (CD), absorption, and emission spectroscopies. In the cyclic conjugate, the rotational motion around the molecular axis of the OPE moiety was hindered to take a chirally twisted conformation, which is a distorted form from the coplanar conjugated structure, as revealed by observation of an induced negative Cotton effect of the OPE moiety. Molecular simulation using time dependant-density functional theory indicated a right-handed twist conformation of the OPE moiety for the negative Cotton effect. This conjugate therefore provides a new way to obtain a pi-conjugated compound having, main-chain chirality. The optical properties of the OPE moiety taking the twist conformation in the cyclic conjugate are also discussed in depth.

  DOI：

  10.1021/jo9001905

文献信息

• Chirally Twisted Oligo(phenyleneethynylene) by Cyclization with α-Helical Peptide
  作者：Hidenori Nakayama、Shunsaku Kimura

  DOI：10.1021/jo9001905

  日期：2009.5.1

  A novel cyclic conjugate of a helical decapeptide and oligo(phenyleneethynylene) (OPE), C-OPE10, was synthesized. The conformation and the optical properties of the cyclic conjugate were studied by circular dichroism (CD), absorption, and emission spectroscopies. In the cyclic conjugate, the rotational motion around the molecular axis of the OPE moiety was hindered to take a chirally twisted conformation, which is a distorted form from the coplanar conjugated structure, as revealed by observation of an induced negative Cotton effect of the OPE moiety. Molecular simulation using time dependant-density functional theory indicated a right-handed twist conformation of the OPE moiety for the negative Cotton effect. This conjugate therefore provides a new way to obtain a pi-conjugated compound having, main-chain chirality. The optical properties of the OPE moiety taking the twist conformation in the cyclic conjugate are also discussed in depth.