phenyl-2,3,4,6-tetra-O-acetyl-1-selenenylsulfide-β-d-galactopyranoside | 678968-47-3

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: phenyl-2,3,4,6-tetra-O-acetyl-1-selenenylsulfide-β-d-galactopyranoside
• 英文别名: phenyl 2,3,4,6-tetra-O-acetyl-1-selenylsulfide-D-β-galactopyranoside；[(2R,3S,4S,5R,6S)-3,4,5-triacetyloxy-6-phenylselanylsulfanyloxan-2-yl]methyl acetate
• CAS: 678968-47-3
• 化学式: C₂₀H₂₄O₉SSe
• 分子量: 519.431
• InChiKey: ZYBJTRISVFFPBU-CXQPBAHBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.75
• 重原子数：
  31
• 可旋转键数：
  12
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  140
• 氢给体数：
  0
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  Boc-Cys-Thr-OMe 、 phenyl-2,3,4,6-tetra-O-acetyl-1-selenenylsulfide-β-d-galactopyranoside 在 三乙胺 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 以93%的产率得到N-butoxycarbonyl-L-cysteine (2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl disulfide)-L-threonine methyl ester
  参考文献：
  名称：

  Glyco-SeS：亚硒硫醚介导的蛋白质糖缀合——一种翻译后修饰的新策略。

  摘要：

  DOI：

  10.1002/anie.200352975
• 作为产物：
  描述：

  2-(2,3,4,6-四-O-乙酰基-beta-D-吡喃半乳糖基)异硫脲氢溴酸盐 在 sodium metabisulfite 作用下， 以 二氯甲烷 为溶剂， 生成 phenyl-2,3,4,6-tetra-O-acetyl-1-selenenylsulfide-β-d-galactopyranoside
  参考文献：
  名称：

  Glyco-SeS：亚硒硫醚介导的蛋白质糖缀合——一种翻译后修饰的新策略。

  摘要：

  DOI：

  10.1002/anie.200352975

文献信息

• Glycosylated Eumelanin Building Blocks by Thioglycosylation of 5,6-Diacetoxyindole with an Expedient Selenium-Based Dynamic-Mixture Methodology
  作者：Matteo Adinolfi、Marco d'Ischia、Alfonso Iadonisi、Loredana Leone、Alessandro Pezzella、Silvia Valerio

  DOI：10.1002/ejoc.201200299

  日期：2012.8

  A series of 3-thioglycosylated 5,6-diacetoxyindole derivatives, which are important tools for eumelanin research and application, were prepared through a practical and efficient approach exploiting a dynamic mixture of thioglycoside agents. The strategy is feasible for installing both mono- and disaccharide units and relies on the facile in situ conversion of glycosyl disulfides into the corresponding

  一系列 3-硫糖基化 5,6-二乙酰氧基吲哚衍生物是真黑素研究和应用的重要工具，通过利用硫糖苷试剂的动态混合物的实用和有效的方法制备。该策略对于安装单糖和二糖单元都是可行的，并且依赖于在二苯基二硒化物、N-溴代琥珀酰亚胺 (NBS) 和四丁基溴化铵 (TBAB) 存在下，糖基二硫化物易于原位转化为相应的、更具反应性的苯基硫化物）。
• A straightforward synthetic access to symmetrical glycosyl disulfides and biological evaluation thereof
  作者：Matteo Adinolfi、Domenica Capasso、Sonia Di Gaetano、Alfonso Iadonisi、Loredana Leone、Antonello Pastore

  DOI：10.1039/c1ob05619k

  日期：——

  Symmetrical glycosyl disulfides can be prepared within a few hours from per-O-acetylated precursors via a sequential approach entailing short reactions and no purification of any intermediate. The final thiolate-to-disulfide oxidation step is noticeably accelerated by low amounts of phenyl diselenide under air. Applicability of the strategy to non-saccharidic symmetrical alkyl disulfides has also been examined. A preliminary assay of the cytotoxic activity of symmetrical 1,1′- disulfides was performed on two human tumor cell lines, and a noteworthy activity was recorded for a range of these synthetic compounds.

  对称的糖基二硫化物可以通过连续反应方法，在几小时内从全乙酰化前体制备得到，期间无需对任何中间体进行纯化。在最后的硫醇盐氧化成二硫化物步骤中，少量的二苯基二硒化物在空气中能显著加速反应。这个策略对非糖类的对称烷基二硫化物的适用性也进行了研究。对一系列合成的1,1'-二硫化物在两种人类肿瘤细胞系上进行了初步的细胞毒性活性测试，结果表明这些化合物具有显著的活性。
• [EN] REAGENTS AND METHODS FOR THE FORMATION OF DISULFIDE BONDS AND THE GLYCOSYLATION OF PROTEINS<br/>[FR] REACTIFS ET PROCEDES POUR FORMER DES LIAISONS DISULFURE ET POUR GLYCOSYLER DES PROTEINES
  申请人：ISIS INNOVATION

  公开号：WO2005000862A3

  公开（公告）日：2005-08-18
• Synthesis of mixed glycosyl disulfides/selenenylsulfides using benzyltriethylammonium tetrathiomolybdate as a sulfur transfer reagent
  作者：Cheerladinne Venkateswarlu、Vibha Gautam、Srinivasan Chandrasekaran

  DOI：10.1016/j.carres.2014.09.005

  日期：2015.1

  An easy and mild method has been developed for the synthesis of mixed glycosyl disulfides/selenenylsulfides from glycosyl halides and diaryl/dialkyl dichalcogenides in the presence of benzyltriethylammonium tetrathiomolybdate [(BnEt3N)(2)MoS4]. The salient feature of this method is the sulfur transfer from [BnEt3N](2)MoS4 to form glycosyl disulfides which with excess tetrathiomolybdate further undergo exchange reaction with other dichalcogenides in a one-pot operation. (C) 2014 Elsevier Ltd. All rights reserved.
• Disentangling Eumelanin “Black Chromophore”: Visible Absorption Changes As Signatures of Oxidation State- and Aggregation-Dependent Dynamic Interactions in a Model Water-Soluble 5,6-Dihydroxyindole Polymer
  作者：Alessandro Pezzella、Alfonso Iadonisi、Silvia Valerio、Lucia Panzella、Alessandra Napolitano、Matteo Adinolfi、Marco d’Ischia

  DOI：10.1021/ja905162s

  日期：2009.10.28

  A fundamental unsettled issue concerning eumelanins, the functional biopolymers of human skin and hair, is why they are black. The experimental difficulty lies in the virtual insolubility of these pigments, causing marked scattering effects and hindering characterization of the intrinsic absorption properties of the heterogeneous species produced by oxidative polymerization of 5,6-dihydroxyindole (DHI) and related monomer precursors. The synthesis of spectrally robust, water-soluble DHI polymers is therefore an important goal in the prospects of disentangling intrinsic absorption properties of eumelanin components by circumventing scattering effects. Reported herein is the first water-soluble DHI polymer produced by oxidation of ad hoc designed 5,6-dihydroxy-3-indolyl-1-thio-beta-D-galactopyranoside (1). The dark brown polymer exhibited a distinct band at 314 nm and a broad visible absorption, resembling that of natural eumelanins. Main isolable oligomer intermediates including 2,7'- and 2,4'-biindolyls 2 and 3, attest the close resemblance to the mode of coupling of the parent DHI. Sodium borohydride reduction caused decoloration and a marked absorbance decrease in the visible region around 550 nm, but did not affect the UV band at 314 nm. Measurements of absorbance variations with dilution indicated a linear response at 314 rim, but a significant deviation from linearity in the visible region, with the largest decrease around 500 nm. It is argued that eumelanin black color is not only intrinsically defined by the overlap of pi-electron conjugated chromophores within the individual polymer components, as commonly believed, but also by oxidation state- and aggregation-dependent interchromophoric interactions causing perturbations of the heterogeneous ensemble of pi-electron systems and overall spectral broadening.