2,3,4,6-四-O-(苯基甲基)-D-半乳糖酸 D-内酯 | 82598-84-3

• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 2,3,4,6-四-O-(苯基甲基)-D-半乳糖酸 D-内酯
• 中文别名: 2,3,4,6-四-O-苄基-D-半乳糖-1,5-内酯
• 英文名称: 2,3,4,6-tetra-O-benzyl-D-galactonolactone
• 英文别名: 2,3,4,6-tetra-O-benzyl-D-galactono-1,5-lactone；2,3,4,6-tetra-O-benzyl-D-galacto-1,5-lactone；2,3,4,6-tetra-O-benzyl-D-galactono-δ-lactone；(3R,4S,5S,6R)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-one
• CAS: 82598-84-3
• 化学式: C₃₄H₃₄O₆
• 分子量: 538.64
• InChiKey: BUBVLQDEIIUIQG-JDIHBLRXSA-N

物化性质

• 沸点：
  677.7±55.0 °C(Predicted)
• 密度：
  1.22±0.1 g/cm3(Predicted)
• 溶解度：
  氯仿（微溶）、二氯甲烷（微溶）、甲醇（微溶）

计算性质

• 辛醇/水分配系数(LogP)：
  5.5
• 重原子数：
  40
• 可旋转键数：
  13
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.26
• 拓扑面积：
  63.2
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  2,3,4,6-四-O-(苯基甲基)-D-半乳糖酸 D-内酯 在 三乙基硅烷 、 正丁基锂 、 三氟甲磺酸三甲基硅酯 、 4 A molecular sieve 作用下， 以 二氯甲烷 为溶剂， 反应 2.66h， 生成 2-(2,3,4,6-Tetra-O-benzyl-β-D-galactopyranosyl)thiazole
  参考文献：
  名称：

  Thiazole-Based Synthesis of Formyl C-Glycosides

  摘要：

  A method for the installation of the formyl group at the anomeric position of pyranoses and furanoses starting from the corresponding lactones has been developed. The strategy involves the addition of 2-lithiothiazole to the sugar lactone, followed by the silane reduction of the acetylated resultant ketol and the unmasking of the formyl group from the thiazole ring. All steps have been studied in some details to improve chemical efficiency and stereochemical control. Hence, reversed alpha:beta ratios of ketols were found in kinetic and thermodynamic mixtures, the former being consistent with a steric effect control of the substituents and the latter by the electronic effect of the ring oxygen. Seven sugar aldehydes with different D-pyranosidic (2,3,4,6-tetra-O-benzyl-gluco, -galacto, and -manno, 2-azido-3,4,6-tri-O-benzyl-2-deoxy-galacto) and D-furanosidic moieties (5-O-benzyl-2,3-isopropylidene-ribo; 2,3,5-tri-O-benzyl-ribo; 2,3:5,6-di-O-isopropylidene-manno) were prepared in 52-65% isolated overall yield from the corresponding lactone.

  DOI：

  10.1021/jo00100a050
• 作为产物：
  描述：

  Α-D-乳酸吡喃糖苷甲酯 在 盐酸 、 strontium (III) chloride hexahydrate 、 一氯化碘 、 sodium hydride 、 caesium carbonate 作用下， 以 二氯甲烷 、 水 、 溶剂黄146 、 N,N-二甲基甲酰胺 、 mineral oil 为溶剂， 反应 6.5h， 生成 2,3,4,6-四-O-(苯基甲基)-D-半乳糖酸 D-内酯
  参考文献：
  名称：

  一氯化碘 (ICl) 作为一种高效的绿色氧化剂，用于将醇氧化成相应的羰基化合物

  摘要：

  摘要 一氯化碘 (ICl) 被发现是一种高效的绿色氧化剂，可以将醛糖半缩醛、二芳基甲醇、芳烷基甲醇和二烷基甲醇分别以高产率氧化成相应的醛糖内酯、二芳基甲酮、芳基烷基甲酮和二烷基甲酮。ICl作为一种绿色无金属氧化剂，具有反应条件温和、反应时间短、收率好、适用范围广等特点。图形概要

  DOI：

  10.1080/00397911.2015.1005630

文献信息

• Total Synthesis of an Antitumor Agent, Mucocin, Based on the “Chiron Approach”
  作者：Shunya Takahashi、Tadashi Nakata

  DOI：10.1021/jo020211h

  日期：2002.8.1

  aldehyde 4 in the presence of CeCl(3). Synthesis of the lactone 3 relied on a novel approach by taking advantage of a radical cyclization of acyclic selenocarbonate 6. The three building blocks 4, 5a, and 6 were prepared stereoselectivly from D-galactose (7), 2,5-anhydro-D-mannitol (8), and L-rhamnose (9), respectively. A new and efficient method for desymmetrization of the C(2)-symmetrical compound 8 is

  通过THP-THF片段2和末端丁烯内酯3的钯催化交叉偶联反应，可实现强大的抗肿瘤产乙酸原素粘液素（1）的总合成。构建片段2的关键过程是螯合-在乙二醛23a中控制乙炔基氯化镁的添加，以及由此制得的烷基锂与THP醛4的缩合。内酯3的合成通过利用无环硒代碳酸酯6的自由基环化而依赖于新方法。这三个结构单元4、5a和6是从D-半乳糖（7），2,5-脱水D立体选择性地制备的-甘露醇（8）和L-鼠李糖（9）。还介绍了一种新的高效的对称对称C（2）化合物8的方法。
• [EN] DETECTION OF MYCOBACTERIA<br/>[FR] DÉTECTION DE MYCOBACTÉRIES
  申请人：ISIS INNOVATION

  公开号：WO2011030160A1

  公开（公告）日：2011-03-17

  A method for determining the presence of mycobacteria species in an organism or biological sample, the method comprising adding to the organism or biological sample a probe molecule comprising a substrate and a label, which probe molecule can be incorporated into mycobacteria, the presence of mycobacteria being determined by a detector responsive to the presence of the label, optionally after applying a stimulus; suitable probe molecules include compounds comprising a label and a substrate, which label is can be detected by a detector responsive to the presence of the label, optionally after applying a stimulus, characterised by compound being able to engage with the active site of Antigen 85B (Ag85B) such that it can form simultaneous hydrogen bonds with two or more amino acids in the active site selected from Arg 43, Trp 264, Ser126, His 262 and Leu 42, or the corresponding amino acids in Antigen 85A (Ag85A) or Antigen 85C (Ag85C), at least one of which is with Ser126.

  一种用于确定生物体或生物样本中结核分枝杆菌种类存在的方法，该方法包括向生物体或生物样本中添加一种探针分子，该探针分子包括底物和标记，该探针分子可以被结核分枝杆菌所吸收，通过对标记的存在做出反应的探测器确定结核分枝杆菌的存在，可选地，在施加刺激后进行；适用的探针分子包括包含标记和底物的化合物，该标记可以被对标记的存在做出反应的探测器检测到，可选地，在施加刺激后进行，其特征在于该化合物能够与抗原85B（Ag85B）的活性位点结合，从而能够与所选活性位点中的两个或更多氨基酸同时形成氢键，所选活性位点包括Arg 43、Trp 264、Ser126、His 262和Leu 42，或者抗原85A（Ag85A）或抗原85C（Ag85C）中对应的氨基酸，其中至少一个与Ser126形成氢键。
• Highly Stereoselective Nucleophilic Addition of Difluoromethyl-2-pyridyl Sulfone to Sugar Lactones and Efficient Synthesis of Fluorinated 2-Ketoses
  作者：Xiao Liu、Qiang Yin、Jian Yin、Guohua Chen、Xin Wang、Qi-Dong You、Yue-Lei Chen、Bing Xiong、Jingkang Shen

  DOI：10.1002/ejoc.201402757

  日期：2014.10

  sulfone to sugar lactones proceeded with good yield and excellent stereoselectivity. The hitherto unknown direct addition intermediates are stable and capable of useful conversions: Formal elimination of the anomeric hydroxy and sulfonyl groups yielded a 1-deoxy-1-difluoromethylene mannopyranose derivative. Directly from sugar lactones, by nucleophilic addition and subsequent one-pot reduction with

  二氟甲基-2-吡啶基砜与糖内酯的亲核加成具有良好的收率和优异的立体选择性。迄今为止未知的直接加成中间体是稳定的并且能够进行有用的转化：异头羟基和磺酰基的形式消除产生1-脱氧-1-二氟亚甲基吡喃甘露糖衍生物。直接从糖内酯中，通过亲核加成和随后的烯丙基氯化镁一锅还原，有效地制备了前所未有的氟化 2-酮糖类似物。
• Synthesis of C-spiro-glycoconjugates from sugar lactones via zinc mediated Barbier reaction
  作者：Mallikharjuna Rao Lambu、Altaf Hussain、Deepak K. Sharma、Syed Khalid Yousuf、Baldev Singh、Anil. K. Tripathi、Debaraj Mukherjee

  DOI：10.1039/c3ra46796a

  日期：——

  Anomeric gem-diallylation, mono-β-crotylation and mono-β-propargylation of sugar 1,5 and 1,4 lactones have been achieved under Barbier reaction conditions using Zn powder and a catalytic amount of TMSCl as an activator. Ring closing olefin metathesis of the synthesized gem-diallyl derivatives furnished C-spiro cyclopentene glycosides. Finally, the cyclopentene rings were converted into carbohydrate based tricyclic morpholine fused triazole glycoconjugates as potential SGLT2 inhibitors.

  使用Zn粉和催化量的TMSCl作为活化剂，在Barbier反应条件下实现了糖1,5和1,4内酯的anomeric双二烯基化、单-β-罗汀基化和单-β-丙炔基化。合成的双二烯基衍生物经过环闭合烯烃复分解反应得到C-螺环戊烯糖苷。最后，将环戊烯环转化为基于碳水化合物的三环吗啉并三唑糖缀合物，作为潜在的SGLT2抑制剂。
• Highly (<i>Z</i>)-Diastereoselective Synthesis of Trifluoromethylated <i>exo</i>-Glycals via Photoredox and Copper Catalysis
  作者：Christophe J.-M. Frédéric、Jérôme Cornil、Mathilde Vandamme、Lidia Dumitrescu、Abdellatif Tikad、Raphaël Robiette、Stéphane P. Vincent

  DOI：10.1021/acs.orglett.8b02891

  日期：2018.11.2

  Highly (Z)-diastereoselective approaches for the synthesis of trifluoromethylated exo-glycals by copper and photoredox catalysis are described. These complementary reactions are applicable to a wide range of methylene exo-glycals generated from the corresponding pyranoses and furanoses and give trifluoromethylated compounds under mild conditions in moderate to good yields. DFT calculations have allowed

  高度（Ž）用于合成三氟甲基化的方法-diastereoselective外型由铜和photoredox催化-glycals中描述。这些互补反应适用于由相应的吡喃糖和呋喃糖酶产生的各种亚甲基外糖，并在温和的条件下以中等至良好的收率得到三氟甲基化的化合物。DFT计算已使观察到的（Z）-立体选择性合理化。