oleanolic acid 3-O-(2,3,4-tri-O-benzoyl-α-L-arabinopyranoside) | 257614-54-3

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: oleanolic acid 3-O-(2,3,4-tri-O-benzoyl-α-L-arabinopyranoside)
• 英文别名: (4aS,6aR,6aS,6bR,8aR,10S,12aR,14bS)-2,2,6a,6b,9,9,12a-heptamethyl-10-[(2S,3R,4S,5S)-3,4,5-tribenzoyloxyoxan-2-yl]oxy-1,3,4,5,6,6a,7,8,8a,10,11,12,13,14b-tetradecahydropicene-4a-carboxylic acid
• CAS: 257614-54-3
• 化学式: C₅₆H₆₈O₁₀
• 分子量: 901.15
• InChiKey: QGWYGRRUYTVSCG-ASRJOBBQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  12.7
• 重原子数：
  66
• 可旋转键数：
  12
• 环数：
  9.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  135
• 氢给体数：
  1
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  oleanolic acid 3-O-(2,3,4-tri-O-benzoyl-α-L-arabinopyranoside) 在 sodium methylate 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 以85%的产率得到fatsiaside A1
  参考文献：
  名称：

  齐墩果酸单糖苷和二糖苷的简便合成。

  摘要：

  齐墩果酸及其苷类是重要的天然产物，具有多种有吸引力的生物活性，如抗肿瘤、抗病毒和抗炎特性。在目前的工作中，15 种带有各种糖基的齐墩果酸皂苷，包括 3-单糖苷、28-单糖苷和 3,28-二糖苷，很容易以高产率合成。选择苄基作为 COOH(28) 基团的保护基团，而不是常用的甲基和烯丙基，以避免最终脱保护的困难。发现碱促进羧酸与溴糖苷的缩合在 28-糖苷的合成中更有效。研究了两种方法并证明在制备 3,28-二糖苷中是可行的。

  DOI：

  10.3390/molecules13071472
• 作为产物：
  描述：

  [(3S,4R,5R)-4,5-dibenzoyloxy-6-hydroxyoxan-3-yl] benzoate 在 三氟甲磺酸三甲基硅酯 、 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 0.66h， 生成 oleanolic acid 3-O-(2,3,4-tri-O-benzoyl-α-L-arabinopyranoside)
  参考文献：
  名称：

  First Synthesis of a Bidesmosidic Triterpene Saponin by a Highly Efficient Procedure

  摘要：

  DOI：

  10.1021/ja9926818

文献信息

• Synthesis, biological evaluation and structure-activity relationship studies of hederacolchiside E and its derivatives as potential anti-Alzheimer agents
  作者：Hui-ning Li、Yang Liu、Zuo-peng Zhang、Zhi-peng Wang、Jing-zheng Hao、Feng-ran Li、Zhan-fang Fan、Li-bo Zou、Mao-sheng Cheng

  DOI：10.1016/j.ejmech.2017.11.040

  日期：2018.1

  Inspired by the previously reported neuroprotective activity of hederacolchiside E (1), we synthesized hederacolchiside E for the first time along with eleven of its derivatives. The neuroprotective effects of these compounds were further evaluated against H2O2- and A beta(1-42)-induced injury using cell-based assays. The derivatives showed obvious differences in activity due to structural variations, and two of them exhibited better neuroprotective effects than 1 in the A beta(1-42)-induced injury model. Compound 7 was the most active derivative and had a relatively simple chemical structure. Moreover, 1 and 7 can significantly reduce the release of lactate dehydrogenase (LDH), level of intracellular reactive oxygen species (ROS) and extent of malondialdehyde (MDA) increase resulting from A beta(1-42) treatment, which demonstrated that these kinds of compounds show neuroprotective effects in Alzheimer's disease (AD) models via modulating oxidative stress. Compound 7 could be used as promising lead for the development of a new type of neuroprotective agent against AD. (C) 2017 Elsevier Masson SAS. All rights reserved.