phloretin-2′-O-β-D-glucuronide | 123685-24-5

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 黄酮类化合物
• 英文名称: phloretin-2′-O-β-D-glucuronide
• 英文别名: phloretin 2'-O-β-glucuronide；phloretin-2'-O-β-glucuronide；phloretin 2'-O-glucuronide；(2S,3S,4S,5R,6S)-6-[3,5-dihydroxy-2-[3-(4-hydroxyphenyl)propanoyl]phenoxy]-3,4,5-trihydroxyoxane-2-carboxylic acid
• CAS: 123685-24-5
• 化学式: C₂₁H₂₂O₁₁
• 分子量: 450.399
• InChiKey: YFJJAJIWPWXWJJ-ZFORQUDYSA-N

物化性质

• 沸点：
  818.9±65.0 °C(Predicted)
• 密度：
  1.642±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 重原子数：
  32
• 可旋转键数：
  7
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  194
• 氢给体数：
  7
• 氢受体数：
  11

反应信息

• 作为产物：
  描述：

  根皮素 、 uridine diphosphoglucuronic acid 在 recombinant UDP-glucuronosyl transferase 作用下， 以 二甲基亚砜 为溶剂， 反应 2.0h， 生成 phloretin-2′-O-β-D-glucuronide
  参考文献：
  名称：

  Polyphenols Are Intensively Metabolized in the Human Gastrointestinal Tract after Apple Juice Consumption

  摘要：

  Polyphenols are secondary plant compounds showing anticarcinogenic effects both in vitro and in animal experiments and may thus reduce the risk of colorectal cancer in man. The identification of polyphenol metabolites formed via their passage through the small intestine of healthy ileostomy subjects after apple juice consumption is presented. Identification and quantification of polyphenols and their metabolites were performed using HPLC-DAD as well as HPLC-ESI-MS/MS. Total procyanidin content (TPA) was measured, and additionally the mean degree of polymerization (DPm) of the procyanidins was determined in the apple juice and ileostomy effluents. As products of polyphenol metabolism, D-(-)-quinic acid and methyl esters of caffeic acid and p-coumaric acid are liberated from the corresponding hydroxycinnamic acid esters. 1-Caffeoylquinic acid and 3-caffeoylquinic acid were determined as products of isomerization. Phloretin 2'-O-glucoside (phloridzin) and phloretin 2'-O-xyloglucoside were metabolized into the corresponding aglycons phloretin and phloretin 2'-O-glucuronide and all were found in the ileostomy effluent. Ninety percent of the consumed procyanidins were recovered in the ileostomy effluent and therefore would reach the colon under physiologic circumstances. The DPm was reduced (DPm of apple juice = 5.7) and varied depending on the time point of excretion. The gastrointestinal passage seems to play an important role in the colonic availability of apple polyphenols.

  DOI：

  10.1021/jf071942r

文献信息

• Enzymatic Synthesis of Bioactive <i>O</i>-Glucuronides Using Plant Glucuronosyltransferases
  作者：Tian Yue、Ridao Chen、Dawei Chen、Jimei Liu、Kebo Xie、Jungui Dai

  DOI：10.1021/acs.jafc.9b01769

  日期：2019.6.5

  glucuronidation of bioactive natural products or drugs to generate glucuronides with better activity and druggability is important in drug discovery and research. In this study, by using two uridine diphosphate (UDP)-dependent glucuronosyltransferases (GATs, UGT88D4 and UGT88D7) from plants, we developed two glucuronidation approaches, pure enzyme catalysis in vitro and recombinant whole-cell catalysis in

  在自然界和药物代谢中已发现许多表现出多种药理活性的O-葡萄糖醛酸。生物活性天然产物或药物的葡糖醛酸苷化以产生具有更好活性和可药用性的葡糖醛酸苷在药物发现和研究中很重要。在这项研究中，通过使用来自植物的两种尿苷二磷酸（UDP）依赖性葡萄糖醛酸糖基转移酶（GAT，UGT88D4和UGT88D7），我们开发了两种葡萄糖醛酸化方法，即体外纯酶催化和体内重组全细胞催化，以有效合成生物活性O。 -glucuronides通过天然产物的葡萄糖醛酸化作用。总共14 O获得了具有不同结构的β-葡糖醛酸，包括类黄酮，蒽醌，香豆素和木脂素，其中7种是新化合物。此外，生物合成的O-葡萄糖醛酸中的一种，kaempferol-7- O - β - d-葡萄糖醛酸（3a）可以有效抑制蛋白酪氨酸磷酸酶（PTP）1B，IC 50值为8.02×10 –6M。生物合成的O-葡萄糖醛酸苷也表现出显着的抗氧化活性。