(E)-3-[2,4-bis(benzyloxy)-6-hydroxyphenyl]-1-[3,4-bis(benzyloxy)phenyl]propene | 732298-08-7

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 直链 1,3-二芳基丙烷
• 英文名称: (E)-3-[2,4-bis(benzyloxy)-6-hydroxyphenyl]-1-[3,4-bis(benzyloxy)phenyl]propene
• 英文别名: 2-[(E)-3-[3,4-bis(phenylmethoxy)phenyl]prop-2-enyl]-3,5-bis(phenylmethoxy)phenol
• CAS: 732298-08-7
• 化学式: C₄₃H₃₈O₅
• 分子量: 634.772
• InChiKey: ORSVTSMBNYPDRF-LPYMAVHISA-N

物化性质

• 沸点：
  803.9±60.0 °C(Predicted)
• 密度：
  1.201±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  10
• 重原子数：
  48
• 可旋转键数：
  15
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  57.2
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  (E)-3-[2,4-bis(benzyloxy)-6-hydroxyphenyl]-1-[3,4-bis(benzyloxy)phenyl]propene 在 咪唑 、 甲基磺酰胺 、 四丁基氟化铵 、 4-甲基苯磺酸吡啶 、 氢化奎尼定 1,4-(2,3-二氮杂萘)二醚 、 原甲酸三乙酯 作用下， 以 四氢呋喃 、 二氯甲烷 、 水 、 1,2-二氯乙烷 、 N,N-二甲基甲酰胺 、 叔丁醇 为溶剂， 反应 9.0h， 生成 (-)-(2S,3R)-5,7-bis(benzyloxy)-2-[3,4-bis(benzyloxy)phenyl]chroman-3-ol
  参考文献：
  名称：

  Study of the green tea polyphenols catechin-3-gallate (CG) and epicatechin-3-gallate (ECG) as proteasome inhibitors

  摘要：

  The green tea polyphenol catechin-3-gallate (CG) and epicatechin-3-gallate (ECG) were synthesized enantioselectively via a Sharpless hydroxylation reaction followed by a diastereoselective cyclization. Their potencies to inhibit the proteasome activity were measured. The unnatural enantiomers were found to be equally potent to the natural compounds. (C) 2004 Elsevier Ltd, All rights reserved.

  DOI：

  10.1016/j.bmc.2004.04.033
• 作为产物：
  描述：

  TRANS-咖啡酸 在 二异丁基氢化铝 、 potassium carbonate 作用下， 以 二氯甲烷 、 丙酮 、 甲苯 为溶剂， 反应 33.5h， 生成 (E)-3-[2,4-bis(benzyloxy)-6-hydroxyphenyl]-1-[3,4-bis(benzyloxy)phenyl]propene
  参考文献：
  名称：

  talienbisflavan A †的不对称全合成

  摘要：

  talienbisflavan A和bis-8,8'-表儿茶素甲烷的第一个不对称全合成以及bis-8,8'-儿茶素甲烷的简便合成是通过使用新开发的儿茶素直接区域选择性甲基化技术从容易获得的原料中完成的衍生品作为关键步骤之一。

  DOI：

  10.1039/c7ob02837g

文献信息

• First Total Synthesis of¹⁴C-Labeled Procyanidin B2 - A Milestone Toward Understanding Cocoa Polyphenol Metabolism
  作者：Florian Viton、Cyrille Landreau、David Rustidge、Fabien Robert、Gary Williamson、Denis Barron

  DOI：10.1002/ejoc.200800886

  日期：2008.12

  recent years. Among these foods, cocoa and dark chocolate are particularly rich in procyanidins, one of the major dietary families of polyphenols. We developed the first asymmetric total synthesis of procyanidin B2 and applied it to the preparation of a regioselectively radiolabeled 14C-analogue, which will be used to strengthen our knowledge on the metabolism of procyanidins.(© Wiley-VCH Verlag GmbH & Co

  近年来，为了纯粹的愉悦而消费的食物可以提供健康益处的想法得到了很多认可。在这些食物中，可可和黑巧克力富含原花青素，这是多酚的主要膳食家族之一。我们开发了第一个原花青素 B2 的不对称全合成，并将其应用于制备区域选择性放射性标记的 14C 类似物，这将用于加强我们对原花青素代谢的了解。（© Wiley-VCH Verlag GmbH & Co. KGaA， 69451 魏因海姆，德国，2008）
• 10th international symposium on the synthesis and applications of isotopes and isotopically labelled compounds-synthesis of compounds labelled with long-lived isotopes Session 17, Thursday, June 18, 2009
  作者：Karl Cable、John Easter

  DOI：10.1002/jlcr.1773

  日期：——

  This session is a continuation of Session 1. A number of methods detailing the synthesis of tritiated compounds as well as a discussion on the handling of tritium on a multi-Curie scale are presented. In addition, the descriptions of a number of preparations of individual isotopically labelled compounds are detailed. Copyright © 2010 John Wiley & Sons, Ltd.

  本节是第一节的延续。介绍了多种详细的三氯化物合成方法，并讨论了在大居里量级上处理氚的方法。此外，详细描述了多种个别同位素标记化合物的制备过程。版权所有 © 2010 约翰威利父子公司。
• Enantioselctive Syntheses of Sulfur Analogues of Flavan-3-Ols
  作者：Pradeep K. Sharma、Min He、Jurjus Jurayj、Da-Ming Gou、Richard Lombardy、Leo J. Romanczy、Hagen Schroeter

  DOI：10.3390/molecules15085595

  日期：——

  The first enantioselective syntheses of sulfur flavan-3-ol analogues 1–8 have been accomplished, whereby the oxygen atom of the pyran ring has been replaced by a sulfur atom. The key steps were: (a) Pd(0) catalyzed introduction of –S t-butyl group, (b) Sharpless enantioselective dihydroxylation of the alkene, (c) acid catalyzed ring closure to produce the thiopyran ring, and (d) removal of benzyl groups using N,N-dimethylaniline and AlCl3. The compounds were isolated in high chemical and optical purity.

  首次完成了硫代黄烷-3-醇类似物1-8的手性选择性合成，其中吡喃环上的氧原子被硫原子取代。关键步骤包括：(a) 通过Pd(0)催化引入-S t-丁基，(b) 使用Sharpless方法对烯烃进行手性选择性二羟基化，(c) 酸性催化闭环生成噻吡喃环，以及(d) 利用N,N-二甲基苯胺和AlCl3去除苄基。合成的化合物具有高化学纯度和光学纯度。
• Preparation of (+)-Catechin, (-)-Epicatechin, (-)-Catechin, and (+)-Epicatechin and Their 5,7,3',4'-Tetra-O-Benzyl Analogues
  申请人：Romanczyk, JR. Leo J.

  公开号：US20100048920A1

  公开（公告）日：2010-02-25

  Processes for preparing racemic mixtures of 5,7,3′,4′-tetra-O-benzyl-(±)-catechin and (±)-epicatechin involves (i) condensing 2-hydroxy-4,6-bis(benzyloxy)-acetophenone and 3,4-bis(benzyloxy)benzaldehyde, cyclizing the resulting compound, oxidizing the resulting compound; (ii) dihydroxylating (E)-3-(3′,4′-bis(benzyloxy)phenyl)prop-2-ene-1-ol and reducing the 1,2-diol; or (iii) coupling 3,5-bis(benzyloxy)phenol with (E)-3,5-bis(benzyloxy)-2-(3′,4′-bis(benzyloxy)phenyl)allyl)phenol and cyclizing the resulting chalcone. A process for preparing the benzylated epimers of catechin and epicatechin involves seven steps. 3,4-Bis(benzyloxy)benzaldehyde is coupled with 2-hydroxy-4,6-benzyloxy-acetophenone to form a chalcone. The chalcone is selectively reduced to an alkene. The phenolic group of the alkene is protected. The protected alkene is asymetrically dihydroxylated. The resulting compound is deprotected, cyclized, and finally hydrolyzed. Epimers resulting from these processes are chemically resolved or separated by chiral high pressure liquid chromatography. Also disclosed is a method for preparing enantiomerically pure 5,7,3′,4′-tetra-O-benzyl-(+)-catechin from a racemic mixture using dibenzoyl-L-tartaric acid monomethyl ester. Further, disclosed is an improved process for preparing dibenzoyl-L-tartaric acid monomethyl ester.

  制备5,7,3′,4′-四-O-苄基-(±)-儿茶素和(±)-表儿茶素的外消旋混合物的过程包括：(i)缩合2-羟基-4,6-双(苄氧基)-乙酮和3,4-双(苄氧基)苯甲醛，环化生成化合物，氧化化合物；(ii)双羟基化(E)-3-(3′,4′-双(苄氧基)苯基)丙-2-烯-1-醇，还原1,2-二醇；或(iii)将3,5-双(苄氧基)苯酚与(E)-3,5-双(苄氧基)-2-(3′,4′-双(苄氧基)苯基)丙烯基)苯酚偶联，生成的查尔酮环化。制备儿茶素和表儿茶素的苄基异构体的过程包括七个步骤。3,4-双(苄氧基)苯甲醛与2-羟基-4,6-双(苄氧基)-乙酮偶联形成查尔酮。查尔酮被选择性还原为烯烃。烯烃的酚基被保护。保护的烯烃被不对称地二羟基化。生成的化合物被去保护，环化，最后水解。这些过程生成的异构体通过手性高压液相色谱进行化学分离。还公开了一种使用二苯乙酰-L-酒石酸单甲酯制备对映纯5,7,3′,4′-四-O-苄基-(+)-儿茶素的方法。此外，还公开了一种改进的制备二苯乙酰-L-酒石酸单甲酯的方法。
• WO2007/2877
  申请人：——

  公开号：——

  公开（公告）日：——