齐墩果酸甲酯 | 1724-17-0

• 物质功能分类: 生物化工 - 提取物
• 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
• 中文名称: 齐墩果酸甲酯
• 中文别名: 石竹素甲酯
• 英文名称: oleanolic acid methyl ester
• 英文别名: methyl oleanolate；methyl oleanate；methyl 3β-hydroxy-olean-12-en-28-oate；methyl 3β-hydroxy-12-oleanen-28-oate；3β-hydroxyolean-12-en-28-oic acid methyl ester；3β-hydroxyoleanane-12-ene-28-carboxylic acid methyl ester；methyl (3β)-3-hydroxyolean-12-en-28-oate；methyl (4aS,6aR,6aS,6bR,8aR,10S,12aR,14bS)-10-hydroxy-2,2,6a,6b,9,9,12a-heptamethyl-1,3,4,5,6,6a,7,8,8a,10,11,12,13,14b-tetradecahydropicene-4a-carboxylate
• CAS: 1724-17-0
• 化学式: C₃₁H₅₀O₃
• mdl: MFCD00017382
• 分子量: 470.736
• InChiKey: BTXWOKJOAGWCSN-JBYJGCOVSA-N

物化性质

• 熔点：
  200-205°C
• 沸点：
  526.1±50.0 °C(Predicted)
• 密度：
  1.07±0.1 g/cm3(Predicted)
• LogP：
  9.520 (est)

计算性质

• 辛醇/水分配系数(LogP)：
  7.8
• 重原子数：
  34
• 可旋转键数：
  2
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.903
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

安全信息

• 危险类别码：
  R36/37/38
• 安全说明：
  S22,S36/37/39

反应信息

• 作为反应物：
  描述：

  齐墩果酸甲酯 在 吡啶 、 盐酸 、 sodium tetrahydroborate 、 jones reagent 、 titanium(III) chloride 、 盐酸羟胺 、 ammonium acetate 、 lithium bromide 作用下， 以 四氢呋喃 、 水 、 N,N-二甲基甲酰胺 、 异丙醇 、 丙酮 为溶剂， 反应 64.75h， 生成 常春藤皂苷元
  参考文献：
  名称：

  Remote Hydroxylation of Methyl Groups by Regioselective Cyclopalladation. Partial Synthesis of Hyptatic Acid-A

  摘要：

  Hyptatic acid-A (32), a 2 alpha,3 beta,24-trihydroxyolean-12-en-28-oic acid, previously isolated from Hyptis capitata, was obtained from maslinic acid (2). The regioselective cyclopalladation of the axial methyl group on C-4 of maslinic acid afforded the C-24 hydroxymethylene group due to the presence of a C-2-OR substituent. Nevertheless, hederagenin (7) (23-hydroxy derivative) was formed when this oxygenated group was not present.

  DOI：

  10.1021/jo070116e
• 作为产物：
  描述：

  methyl (4aS,6aS,6bR,8aR,10R,11R,12aR,12bR,14bS)-10-hydroxy-2,2,6a,6b,9,9,12a-heptamethyl-11-(((methylthio)carbonothioyl)oxy)-1,3,4,5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13,14b-octadecahydropicene-4a(2H)-carboxylate 在 偶氮二异丁腈 、 三丁基氧化锡 作用下， 以 甲苯 为溶剂， 反应 3.0h， 以85%的产率得到齐墩果酸甲酯
  参考文献：
  名称：

  Different pathways for the deoxygenation of the A-ring of natural triterpene compounds

  摘要：

  Some deoxygenation pathways were tested to remove the hydroxyl groups of the natural triterpenes oleanolic acid and maslinic acid to obtain a practical starting material for the semisynthesis of other interesting organic synthons. Different deoxygenation processes were carried out starting from these triterpenic acids or from several derivatives such as methyl esters and epoxy derivatives. The hydroxyl groups were transformed into some intermediate compounds including xanthyl, thiocarbonyl or tosyl derivatives. The opening of the oxirane ring between C-2 and C-3 was also achieved through different methods using deoxygenating reagents such as Me3SiCl/NaI, WCl4/n-BuLi and Cp2TiCl.

  DOI：

  10.1080/14786410903172098

文献信息

• Studies on the constituents of Momordica cochinchinensis Spreng. II. Isolation and characterization of the root saponins, Momordins I, II and III.
  作者：MASAYO IWAMOTO、HIKARU OKABE、TATSUO YAMAUCHI

  DOI：10.1248/cpb.33.1

  日期：——

  From the root of Momordica cochinchinensis SPRENG. (Cucurbitaceae), three saponins named momordins I, II and III have been isolated. Their structures were determined on the basis of chemical and spectral evidence as oleanolic acid 3-O-α-L-arabinopyranosyl (1→3)-β-D-glucuronopyranoside (momordin I), 28-O-β-D-glucopyranoside of momordin I (momordin II) and 3β-hydroxy-11α, 12α-epoxy-olean-28, 13-olide 3-O-α-L-arabinopyranosyl (1→3)-β-D-glucuronopyranoside (momordin III). Momordin II was proved to be identical with hemsloside Ma1 isolated from the tubers of Hemsleya macrosperma and H. chinensis.

  从木鳖子（Momordica cochinchinensis SPRENG. 葫芦科）的根中分离出三种皂苷，命名为木鳖子苷I、II和III。它们的结构通过化学和光谱证据确定为：木鳖子苷I（3-O-α-L-阿拉伯吡喃糖基（1→3）-β-D-葡萄糖醛酸苷基的齐墩果酸）、木鳖子苷II（木鳖子苷I的28-O-β-D-葡萄糖苷）和木鳖子苷III（3β-羟基-11α, 12α-环氧-齐墩果-28, 13-内酯的3-O-α-L-阿拉伯吡喃糖基（1→3）-β-D-葡萄糖醛酸苷）。木鳖子苷II被证实与从大苞赤瓟和中华赤瓟块根中分离出的hemsloside Ma1相同。
• The invention of radical reactions. Part XXXI. Diphenylsilane: a reagent for deoxygenation of alcohols via their thiocarbonyl derivatives, deamination via isonitriles, and dehalogenation of bromo- and iodo- compounds by radical chain chemistry
  作者：Derek H.R. Barton、Doo Ok Jang、Joseph Cs. Jaszberenyi

  DOI：10.1016/s0040-4020(01)87198-2

  日期：1993.8

  Various thionocarbonates and xanthates of alcohols and bis-xanthates of vic-diols are readily deoxygenated to the corresponding hydrocarbons or olefins, while bromides and iodides are dehalogenated with diphenylphenylsilane in good yield.

  各种thionocarbonates和醇的黄原酸盐和二的-xanthates VIC -diols容易脱氧成相应的烃或烯烃，而溴化物和碘化物与以良好的收率diphenylphenylsilane脱卤。
• Scalable and sustainable electrochemical allylic C–H oxidation
  作者：Evan J. Horn、Brandon R. Rosen、Yong Chen、Jiaze Tang、Ke Chen、Martin D. Eastgate、Phil S. Baran

  DOI：10.1038/nature17431

  日期：2016.5.5

  transformation, the majority of conditions still use highly toxic reagents (based around toxic elements such as chromium or selenium) or expensive catalysts (such as palladium or rhodium). These requirements are problematic in industrial settings; currently, no scalable and sustainable solution to allylic oxidation exists. This oxidation strategy is therefore rarely used for large-scale synthetic applications

  C-H 键直接功能化的新方法和策略开始重塑逆合成分析领域，影响天然产物、药物和材料的合成。由于烯酮和烯丙醇作为多功能中间体的实用性，以及它们在天然和非天然材料中的普遍性，烯丙基系统的氧化在这方面发挥了重要作用，可能是应用最广泛的 C-H 官能化。烯丙基氧化在数百种合成中具有特色，包括一些被视为“经典”的天然产物合成。尽管多次尝试提高这种转换的效率和实用性，大多数条件仍然使用剧毒试剂（基于有毒元素，如铬或硒）或昂贵的催化剂（如钯或铑）。这些要求在工业环境中是有问题的；目前，不存在可扩展和可持续的烯丙基氧化解决方案。因此，这种氧化策略很少用于大规模合成应用，限制了工业科学家采用这种逆合成策略。在这里，我们描述了一种电化学 C-H 氧化策略，它具有广泛的底物范围、操作简单性和高化学选择性。它使用廉价且容易获得的材料，并代表可扩展的烯丙基 C-H 氧化（以 100 克为单位证明），
• Design, synthesis, and biofunctional evaluation of novel pentacyclic triterpenes bearing O-[4-(1-piperazinyl)-4-oxo-butyryl moiety as antiproliferative agents
  作者：Chun-hui Zhao、Cui-li Zhang、Jin-jie Shi、Xi-yan Hou、Bin Feng、Long-xuan Zhao

  DOI：10.1016/j.bmcl.2015.08.076

  日期：2015.10

  A series of pentacyclic triterpenoids derivatives bearing O-[4-(1-piperazinyl)-4-oxo-butyryl moiety has been synthesized and investigated for their potential antiproliferative activities. Pentacyclic triterpenoids derivative compounds were synthesized by a four or six step synthetic procedure. The activity studies were evaluated using Cell Counting Kit-8 method, and Western blotting analysis on A549

  合成了一系列带有O- [4-（1-哌嗪基）-4-氧代-丁酰基部分的五环三萜衍生物，并研究了它们潜在的抗增殖活性。五环三萜类化合物的衍生物是通过四步或六步合成程序合成的。使用Cell Counting Kit-8方法评估活性研究，并对A549细胞，MCF-7细胞和Hela细胞进行Western印迹分析。化合物3-O- [4-（1-哌嗪基）-4-氧代-丁酰基] olean-12-ene-28-oate（OA-4）和化合物2-O- [4-（1-哌嗪基）-发现4-氧代-丁酰基] -3，23-二羟基urs-12-烯-28-油酸酯（AA-5）是有前途的抗增殖剂。这些化合物显示出进一步优化作为抗肿瘤药物的潜力。
• Multiple Enone-Directed Reactivity Modes Lead to the Selective Photochemical Fluorination of Polycyclic Terpenoid Derivatives
  作者：Cody Ross Pitts、Desta Doro Bume、Stefan Andrew Harry、Maxime A. Siegler、Thomas Lectka

  DOI：10.1021/jacs.7b00335

  日期：2017.2.15

  orientation of the oxygen atom, site-selective photochemical fluorination is achieved on steroids and bioactive polycycles with up to 65 different sp3 C-H bonds. We have also found that γ-, β-, homoallylic, and allylic fluorination are all possible and predictable through the theoretical modes reported herein. Lastly, we present a preliminary mechanistic hypothesis characterized by intramolecular hydrogen

  在脂肪族氟化领域，反应性问题近年来已得到非常成功的解决。相比之下，相关的选择性问题，即将氟化作用引导到复杂分子中的特定位点，仍然是一个巨大的基本挑战。在本报告中，我们展示了烯酮官能团在光激发时提供了解决方案。仅基于氧原子的取向，在具有多达 65 个不同 sp3 CH 键的类固醇和生物活性多环上实现了位点选择性光化学氟化。我们还发现，通过本文报道的理论模式，γ-、β-、同烯丙基和烯丙基氟化都是可能的和可预测的。最后，我们提出了一个初步的机械假设，其特征是分子内氢原子转移、自由基氟化、并最终恢复 enone。总之，这些结果为复杂底物的选择性氟化设计提供了一个飞跃，这应该与药物发现相关，其中氟起着重要作用。