石茸酸 | 30666-92-3

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 缩酚酸和缩酚酸环醚类
• 中文名称: 石茸酸
• 英文名称: umbilicaric acid
• 英文别名: 2-hydroxy-4-[2-hydroxy-4-(4-hydroxy-2-methoxy-6-methyl-benzoyloxy)-6-methyl-benzoyloxy]-6-methyl-benzoic acid；2-Hydroxy-4-[2-hydroxy-4-(4-hydroxy-2-methoxy-6-methyl-benzoyloxy)-6-methyl-benzoyloxy]-6-methyl-benzoesaeure；6-Oxy-4-(4-oxy-6-methoxy-2-methyl-benzoyloxy)-2-methyl-benzoesaeure-(5-oxy-3-methyl-4-carboxy-phenylester)；Gyrophorsaeure-monomethylaether；Umbilicarsaeure；2-hydroxy-4-[2-hydroxy-4-(4-hydroxy-2-methoxy-6-methylbenzoyl)oxy-6-methylbenzoyl]oxy-6-methylbenzoic acid
• CAS: 30666-92-3
• 化学式: C₂₅H₂₂O₁₀
• 分子量: 482.444
• InChiKey: RLRCNRNYRSKNOO-UHFFFAOYSA-N

物化性质

• 沸点：
  724.2±60.0 °C(Predicted)
• 密度：
  1.431±0.06 g/cm3(Predicted)
• 熔点：
  203 °C (decomp)

计算性质

• 辛醇/水分配系数(LogP)：
  5.4
• 重原子数：
  35
• 可旋转键数：
  8
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.16
• 拓扑面积：
  160
• 氢给体数：
  4
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  石茸酸 在 sodium hydroxide 作用下， 生成 红粉苔酸
  参考文献：
  名称：

  Self-ordered CdSe quantum dots in ZnSe and (Zn, Mn)Se Matrices Assessed by transmission electron microscopy and photoluminescence spectroscopy

  摘要：

  Single and multilayer sheets of self-assembled CdSe [quantum dots (QDs)] were grown by means of molecular beam epitaxy in both ZnSe and (Zn0.9Mn0.1)Se matrices. Both types of structures were assessed by means of transmission electron microscopy in the scanning, high-resolution, and diffraction-contrast modes. Complementary results from wider sample areas were obtained by means of photoluminescence spectroscopy. In one of the samples analyzed, a fractional monolayer of MnSe was deposited immediately before the CdSe deposition. A second structure grown underidentical conditions, but without the MnSe fractional monolayer, was also analyzed. This comparison provides direct evidence for an enhanced size and shape homogeneity of 3D QDs caused by the presence of a tiny amount of MnSe at the interface. In the multilayer structure, we observed the co-existence of highly strained quasi-2D QDs and CdSe rich aggregates with compositional modulations on certain crystallographic planes in close proximity.

  DOI：

  10.1007/bf02665867
• 作为产物：
  描述：

  alkaline earth salt of/the/ methylsulfuric acid 在 sodium hydroxide 、 丙酮 作用下， 生成 石茸酸
  参考文献：
  名称：

  Asahina; Yosioka, Chemische Berichte, 1937, vol. 70, p. 200,204

  摘要：

  DOI：

文献信息

• Prolyl Endopeptidase inhibitors from green tea
  作者：Jin-Hui Kim、Sang-In Kim、Kyung-Sik Song

  DOI：10.1007/bf02975094

  日期：2001.8

  Three prolyl endopeptidase (PEP) inhibitors were isolated from the methanolic extract of green tea leaves. They were identified as (-)-epigallocatechin gallate, (-)-epicatechin gallate, and (+)-gallocatechin gallate with the IC50 values of 1.42 x 10(-4) mM, 1.02 x 10(-2) mM, and 1.09 x 10(-4) mM, respectively. They were non-competitive with a substrate in Dixon plots and did not show any significant effects against other serine proteases such as elastase, trypsin, and chymotrypsin, suggesting that they were relatively specific inhibitors against PEP. The isolated compounds are expected to be useful for preventing and curing of Alzheimer's disease.
• �ber Enzyme der Flechten und �ber die Konstitution der Umbilikars�ure
  作者：Georg Koller、Gerhard Pfeiffer

  DOI：10.1007/bf01518498

  日期：1933.2