(+)-(2S,3S)-cis-5,7-bis(benzyloxy)-2-[3,4,5-tris(benzyloxy)phenyl]chroman-3-ol | 332386-73-9

• 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: (+)-(2S,3S)-cis-5,7-bis(benzyloxy)-2-[3,4,5-tris(benzyloxy)phenyl]chroman-3-ol
• 英文别名: (2S,3S)-5,7-bis(phenylmethoxy)-2-[3,4,5-tris(phenylmethoxy)phenyl]-3,4-dihydro-2H-chromen-3-ol
• CAS: 332386-73-9
• 化学式: C₅₀H₄₄O₇
• 分子量: 756.895
• InChiKey: GKTZINGANAELDT-JUFRVMORSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  10.2
• 重原子数：
  57
• 可旋转键数：
  16
• 环数：
  8.0
• sp3杂化的碳原子比例：
  0.16
• 拓扑面积：
  75.6
• 氢给体数：
  1
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  (+)-(2S,3S)-cis-5,7-bis(benzyloxy)-2-[3,4,5-tris(benzyloxy)phenyl]chroman-3-ol 在 palladium dihydroxide 4-二甲氨基吡啶 、 氢气 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 为溶剂， 生成 epigallocatechin 3-gallate
  参考文献：
  名称：

  Enantioselective Synthesis of Epigallocatechin-3-gallate (EGCG), the Active Polyphenol Component from Green Tea

  摘要：

  [GRAPHICS]Enantioselective synthesis of epigallocatechin-3-gallate (EGCG, 3b), the active polyphenol component from green tea, has been achieved by using a stereospecific cyclization of the Sharpless asymmetric dihydroxylation product 7c as the key step.

  DOI：

  10.1021/ol000394z
• 作为产物：
  描述：

  没食子酸甲酯 在 哌啶 、 sodium tetrahydroborate 、 lithium aluminium tetrahydride 、 硼烷四氢呋喃络合物 、 potassium carbonate 、 pyridinium chlorochromate 作用下， 以 四氢呋喃 、 乙醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 生成 (+)-(2S,3S)-cis-5,7-bis(benzyloxy)-2-[3,4,5-tris(benzyloxy)phenyl]chroman-3-ol
  参考文献：
  名称：

  Synthesis of a 3,4,5-Trimethoxybenzoyl Ester Analogue of Epigallocatechin-3-gallate (EGCG):  A Potential Route to the Natural Product Green Tea Catechin, EGCG

  摘要：

  [GRAPHICS]The synthesis of a trimethoxybenzoyl ester (D-ring) analogue of epigallocatechin-3-gallate (EGCG) is described. The versatile synthesis route can be used to synthesize A, B, and D ring analogues of EGCG and involves a key cyclization of the chalcone to the 3-flavene. This synthesis provides a possible route to the polyphenolic green tea natural product EGCG.

  DOI：

  10.1021/ol007000o

文献信息

• Enantioselective Synthesis of Flavan-3-ols Using a Mitsunobu Cyclization
  作者：Karsten Krohn、Ishtiaq Ahmed、Markus John

  DOI：10.1055/s-0028-1083361

  日期：——

  The synthesis of four flavan-3-ols with different substitution patterns and electron densities has been achieved in high stereo- and regioselectivity by a one-step Mitsunobu reaction from the corresponding diols, which were prepared by enantioselective Sharpless dihydroxylation of suitable olefins. The six-membered flavan-3-ols were the only cyclization products and the theoretically possible formation of five-membered rings during the Mitsunobu cyclization was not observed. The flavanols are important starting materials for the synthesis of dimers such as the procyanidins or other coupling products such as the flavan part of the potent DNA polymerase β inhibitor myristinin A. The enantioselectivities of both the Sharpless dihydroxylation and the Mitsunobu cyclization steps were monitored by chiral HPLC.

  通过从相应的二醇进行一步Mitsunobu反应，以高立体选择性和区位选择性成功合成了四种具有不同取代模式和电子密度的黄酮-3-醇，这些二醇是通过对合适的烯烃进行手性选择性的Sharpless二羟基化制备的。在Mitsunobu环化过程中，六元环的黄酮-3-醇是唯一的环化产物，理论上可能形成的五元环并未被观察到。这些黄酮醇是合成二聚体（如原花青素）或其他偶联产物（如强效DNA聚合酶β抑制剂myristinin A中的黄酮部分）的重要起始材料。Sharpless二羟基化和Mitsunobu环化步骤的对映选择性通过手性高效液相色谱法进行了监测。
• Synthesis of a 3,4,5-Trimethoxybenzoyl Ester Analogue of Epigallocatechin-3-gallate (EGCG):  A Potential Route to the Natural Product Green Tea Catechin, EGCG
  作者：Nurulain T. Zaveri

  DOI：10.1021/ol007000o

  日期：2001.3.1

  [GRAPHICS]The synthesis of a trimethoxybenzoyl ester (D-ring) analogue of epigallocatechin-3-gallate (EGCG) is described. The versatile synthesis route can be used to synthesize A, B, and D ring analogues of EGCG and involves a key cyclization of the chalcone to the 3-flavene. This synthesis provides a possible route to the polyphenolic green tea natural product EGCG.
• Enantioselective Synthesis of Epigallocatechin-3-gallate (EGCG), the Active Polyphenol Component from Green Tea
  作者：Lianhai Li、Tak Hang Chan

  DOI：10.1021/ol000394z

  日期：2001.3.1

  [GRAPHICS]Enantioselective synthesis of epigallocatechin-3-gallate (EGCG, 3b), the active polyphenol component from green tea, has been achieved by using a stereospecific cyclization of the Sharpless asymmetric dihydroxylation product 7c as the key step.