methyl (Z)-2-acetamide-3-(3-quinolyl)-2-propenoate | 1282534-49-9

• 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: methyl (Z)-2-acetamide-3-(3-quinolyl)-2-propenoate
• 英文别名: (Z)-methyl 2-acetamido-3-(quinolin-3-yl)acrylate
• CAS: 1282534-49-9
• 化学式: C₁₅H₁₄N₂O₃
• 分子量: 270.288
• InChiKey: UUKWEPKNKMHGPQ-ZSOIEALJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.88
• 重原子数：
  20.0
• 可旋转键数：
  3.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.13
• 拓扑面积：
  68.29
• 氢给体数：
  1.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  methyl (Z)-2-acetamide-3-(3-quinolyl)-2-propenoate 在 盐酸 、 (R)-[Rh(COD)(MaxPHOS)]BF₄ 、 氢气 作用下， 以 甲醇 、 水 为溶剂， 25.0~100.0 ℃ 、1.5 MPa 条件下， 反应 30.0h， 生成 (2S)-2-amino-3-(3-quinolyl)propanoic acid hydrochloride
  参考文献：
  名称：

  SSTR1- and SSTR3-Selective Somatostatin Analogues

  摘要：

  AbstractWe prepared the two enantiomers of 3‐(3′‐quinolyl)‐alanine (Qla, 1) in multigram scale by asymmetric hydrogenation. These amino acids, protected as Fmoc derivatives, were then used in the solid‐phase synthesis of two new somatostatin 14 (SRIF‐14) analogues 8 a and 8 b, tetradecapeptides in which the tryptophan residue (Trp8) is replaced by one of the two enantiomers of 3‐(3′‐quinolyl)‐alanine (Qla8) and therefore lack the NH bond in residue 8. The selectivity of these new analogues for the somatostatin receptors, SSTR1–5, was measured. Substitution with L‐Qla8 yielded peptide 8 a, which was highly selective for SSTR1 and SSTR3, with an affinity similar to that of SRIF‐14. Substitution by D‐Qla gave the relatively selective analogue 8 b, which showed high affinity for SSTR3 and significant affinity for SSTR1, SSTR2 and SSTR5. The biological results demonstrate that bulky and electronically poor aromatic amino acids at position 8 are compatible with strong activity with SSTR1 and SSTR3. Remarkably, these high affinity levels were achieved with peptides in which the conformational mobility was increased with respect to that of SRIF‐14. This observation suggests that conformational rigidity is not required, and might be detrimental to the interaction with receptors SSTR1 and SSTR3. The absence of an indole N proton in Qla8 might also contribute to the increased flexibility observed in these analogues.

  DOI：

  10.1002/cbic.201000597
• 作为产物：
  描述：

  3-喹啉甲醛 、 2-n-(乙酰基氨基)-二甲基膦乙酸甲酯 在 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 二氯甲烷 为溶剂， 反应 3.5h， 以80%的产率得到methyl (Z)-2-acetamide-3-(3-quinolyl)-2-propenoate
  参考文献：
  名称：

  SSTR1- and SSTR3-Selective Somatostatin Analogues

  摘要：

  AbstractWe prepared the two enantiomers of 3‐(3′‐quinolyl)‐alanine (Qla, 1) in multigram scale by asymmetric hydrogenation. These amino acids, protected as Fmoc derivatives, were then used in the solid‐phase synthesis of two new somatostatin 14 (SRIF‐14) analogues 8 a and 8 b, tetradecapeptides in which the tryptophan residue (Trp8) is replaced by one of the two enantiomers of 3‐(3′‐quinolyl)‐alanine (Qla8) and therefore lack the NH bond in residue 8. The selectivity of these new analogues for the somatostatin receptors, SSTR1–5, was measured. Substitution with L‐Qla8 yielded peptide 8 a, which was highly selective for SSTR1 and SSTR3, with an affinity similar to that of SRIF‐14. Substitution by D‐Qla gave the relatively selective analogue 8 b, which showed high affinity for SSTR3 and significant affinity for SSTR1, SSTR2 and SSTR5. The biological results demonstrate that bulky and electronically poor aromatic amino acids at position 8 are compatible with strong activity with SSTR1 and SSTR3. Remarkably, these high affinity levels were achieved with peptides in which the conformational mobility was increased with respect to that of SRIF‐14. This observation suggests that conformational rigidity is not required, and might be detrimental to the interaction with receptors SSTR1 and SSTR3. The absence of an indole N proton in Qla8 might also contribute to the increased flexibility observed in these analogues.

  DOI：

  10.1002/cbic.201000597

文献信息

• MaxPHOS Ligand: PH/NH Tautomerism and Rhodium- Catalyzed Asymmetric Hydrogenations
  作者：Edgar Cristóbal-Lecina、Pablo Etayo、Séan Doran、Marc Revés、Pablo Martín-Gago、Arnald Grabulosa、Andrea R. Costantino、Anton Vidal-Ferran、Antoni Riera、Xavier Verdaguer

  DOI：10.1002/adsc.201300662

  日期：2014.3.10

  MaxPHOS is an active and robust P‐stereogenic ligand for asymmetric catalysis. The presence of an NH bridge between the two phosphine moieties allows the NH/PH tautomerism to take place. The neutral ligand, in which the NH form predominates, is an air‐sensitive compound. However, protonation of MaxPHOS leads to the stable PH form of the ligand, in which the overall positive charge is distributed

  MaxPHOS是用于不对称催化的活性且健壮的P-stereogenic配体。一个的存在 NH 两个膦部分之间桥使NH / PH互变异构现象的发生。NH形式占优势的中性配体是对空气敏感的化合物。但是，MaxPHOS的质子化会导致配体的PH形式稳定，其中总的正电荷分布在两个P中心。这种质子化将MaxPHOS·HBF 4盐3变成固态和溶液形式的空气稳定化合物。盐3也是通过与配合物[Rh（acac）（cod）]进行直接配体交换而制备铑（I）配合物的方便前体。最后，在各种底物的不对称氢化中测试了相应的Rh（I）-MaxPHOS复合物。在这些反应中，该络合物被证明是高度选择性和强大的系统。