methyl 2-(1-(2-(1-(2-(tert-butoxycarbonylamino)benzoyl)ypyrrolidine-2-carboxamido)benzoyl)pyrrolidine-2-carboxamido)benzoate | 1094297-23-0

• 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: methyl 2-(1-(2-(1-(2-(tert-butoxycarbonylamino)benzoyl)ypyrrolidine-2-carboxamido)benzoyl)pyrrolidine-2-carboxamido)benzoate
• CAS: 1094297-23-0
• 化学式: C₃₇H₄₁N₅O₈
• 分子量: 683.761
• InChiKey: XHCRSTANBPTJLT-KYJUHHDHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.31
• 重原子数：
  50.0
• 可旋转键数：
  8.0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.35
• 拓扑面积：
  163.45
• 氢给体数：
  3.0
• 氢受体数：
  8.0

反应信息

• 作为产物：
  描述：

  methyl 2-(1-(2-(pyrrolidine-2-carboxamido)benzoyl)pyrrolidine-2-carboxamido)benzoate 、 2-(N-叔丁氧羰基氨基)苯甲酸 在 O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、 N,N-二异丙基乙胺 作用下， 以 乙腈 为溶剂， 反应 12.0h， 以72%的产率得到methyl 2-(1-(2-(1-(2-(tert-butoxycarbonylamino)benzoyl)ypyrrolidine-2-carboxamido)benzoyl)pyrrolidine-2-carboxamido)benzoate
  参考文献：
  名称：

  Sequence-Specific Unusual (1→2)-Type Helical Turns in α/β-Hybrid Peptides

  摘要：

  This article describes novel conformationally ordered (alpha/beta-hybrid peptides consisting of repeating L-proline-anthranilic acid building blocks. These oligomers adopt a compact, right-handed helical architecture determined by the intrinsic conformational preferences of the individual amino acid residues. The striking feature of these oligomers is their ability to display an unusual periodic pseudo beta-turn network of nine-membered hydrogen-bonded rings formed in the forward direction of the sequence by 1-->2 amino acid interactions both in solid-state and in solution. Conformational investigations of several of these oligomers by single-crystal X-ray diffraction, solution-state NMR, and ab initio MO theory suggest that the characteristic steric and dihedral angle restraints exerted by proline are essential for stabilizing the unusual pseudo beta-turn network found in these oligomers. Replacing proline by the conformationally flexible analogue alanine (Ala) or by the conformationally more constrained alpha-amino isobutyric acid (Aib) had an adverse effect on the stabilization of this structural architecture. These findings increase the potential to design novel secondary structure elements profiting from the steric and dihedral angle constraints of the amino acid constituents and help to augment the conformational space available for synthetic oligomer design with diverse backbone structures.

  DOI：

  10.1021/ja804297f