dimethyl 4,4'-(2-methylpent-4-ylidene)bis(cinnamate) | 173315-02-1

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 肉桂酸及其衍生物
• 英文名称: dimethyl 4,4'-(2-methylpent-4-ylidene)bis(cinnamate)
• CAS: 173315-02-1
• 化学式: C₂₆H₃₀O₄
• 分子量: 406.522
• InChiKey: PCHXSAUXCGXUMM-OTYYAQKOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.41
• 重原子数：
  30.0
• 可旋转键数：
  8.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  52.6
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  dimethyl 4,4'-(2-methylpent-4-ylidene)bis(cinnamate) 在 palladium on activated charcoal 氢氧化钾 、 氢气 作用下， 以 四氢呋喃 、 乙醇 为溶剂， 25.0 ℃ 、4.05 MPa 条件下， 反应 12.0h， 生成 4,4'-(2-methylpent-4-ylidene)bis(dihydrocinnamic acid)
  参考文献：
  名称：

  Molecular Recognition of .beta.-Ribofuranosides by Synthetic Polypyridine-Macrocyclic Receptors

  摘要：

  Artificial ribofuranoside receptors were designed and synthesized. The design of the polypyridine-macrocyclic receptors was based on the multipoint hydrogen bond complementarity between the receptors and methyl beta-D-ribofuranoside. The binding affinity of the receptors for the ribofuranoside in CDCl3 was very high (up to K-a = 5.2 x 10(3) M(-1)), so that even native ribose was extracted by them into such nonpolar solvents. Selective extraction of ribose by the receptors\was observed: the extractabilities, or affinities to the receptors of various pentoses and hexoses decreased in the following order: ribose > deoxyribose congruent to lxyose congruent to xylose > fructose > arabinose > glucose congruent to mannose congruent to galactose. The selectivity is governed by the OH direction and the whole size of the sugars as well as their shapes. Furthermore, fluorescence emission of the receptors was largely enhanced in the presence of methyl beta-D-ribofuranoside or ribose, and the degree for the fluorescence enhancement by the addition of various sugars was almost compatible with that of the extractabilities. The polypyridine-macrocycles represent rationally designed multifunctional artificial receptors for ribofuranosides.

  DOI：

  10.1021/ja00155a006
• 作为产物：
  描述：

  4,4'-(1,3-二甲基亚丁基)二苯酚 在 吡啶 、 (PPh₃)PdCl₂ 、 三乙胺 、 lithium chloride 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 35.0h， 生成 dimethyl 4,4'-(2-methylpent-4-ylidene)bis(cinnamate)
  参考文献：
  名称：

  Molecular Recognition of .beta.-Ribofuranosides by Synthetic Polypyridine-Macrocyclic Receptors

  摘要：

  Artificial ribofuranoside receptors were designed and synthesized. The design of the polypyridine-macrocyclic receptors was based on the multipoint hydrogen bond complementarity between the receptors and methyl beta-D-ribofuranoside. The binding affinity of the receptors for the ribofuranoside in CDCl3 was very high (up to K-a = 5.2 x 10(3) M(-1)), so that even native ribose was extracted by them into such nonpolar solvents. Selective extraction of ribose by the receptors\was observed: the extractabilities, or affinities to the receptors of various pentoses and hexoses decreased in the following order: ribose > deoxyribose congruent to lxyose congruent to xylose > fructose > arabinose > glucose congruent to mannose congruent to galactose. The selectivity is governed by the OH direction and the whole size of the sugars as well as their shapes. Furthermore, fluorescence emission of the receptors was largely enhanced in the presence of methyl beta-D-ribofuranoside or ribose, and the degree for the fluorescence enhancement by the addition of various sugars was almost compatible with that of the extractabilities. The polypyridine-macrocycles represent rationally designed multifunctional artificial receptors for ribofuranosides.

  DOI：

  10.1021/ja00155a006