methyl 2,3-di-O-acetyl-4-O-benzoyl-α-D-glucopyranoside | 56543-18-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 2,3-di-O-acetyl-4-O-benzoyl-α-D-glucopyranoside
• 英文别名: [(2R,3R,4S,5R,6S)-4,5-diacetyloxy-2-(hydroxymethyl)-6-methoxyoxan-3-yl] benzoate
• CAS: 56543-18-1
• 化学式: C₁₈H₂₂O₉
• 分子量: 382.367
• InChiKey: OBXUALDNWBZOGQ-QFXBJFAPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.8
• 重原子数：
  27
• 可旋转键数：
  9
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  118
• 氢给体数：
  1
• 氢受体数：
  9

反应信息

• 作为产物：
  描述：

  methyl-4,6-O-benzylidene-2,3-diacetyl-α-D-glucopyranoside 生成 methyl 2,3-di-O-acetyl-4-O-benzoyl-α-D-glucopyranoside
  参考文献：
  名称：

  SATO, KEN-ICHI;JGARASHI, TETSUTARO;YANAGISAWA, YUKIO;KAWAUCHI, NOBUYA;HAS+, CHEM. LETT.,(1988) N 10, C. 1699-1702

  摘要：

  DOI：

文献信息

• Facile cleavage of carbohydrate benzyl ethers and benzylidene acetals using the reagent under two-phase conditions
  作者：Matteo Adinolfi、Gaspare Barone、Luigi Guariniello、Alfonso Iadonisi

  DOI：10.1016/s0040-4039(99)01756-6

  日期：1999.11

  benzylidene acetal carbohydrate protecting groups can be selectively cleaved by reaction with sodium bromate/sodium dithionite in ethyl acetate/water. Under the mild (room temperature, short reaction time) conditions needed, a variety of other protecting functionalities such as acetyl, chloroacetyl, benzoyl, pivaloyl, tosyl, t-butyldimethylsilyl, trityl, and isopropylidene groups remain unaffected.

  苄基醚和亚苄基缩醛碳水化合物保护基团可以通过与溴酸钠/连二亚硫酸钠在乙酸乙酯/水中反应选择性地裂解。在所需的温和（室温，短反应时间）条件下，各种其他保护功能如乙酰基，氯乙酰基，苯甲酰基，新戊酰基，甲苯磺酰基，叔丁基二甲基甲硅烷基，三苯甲基和异亚丙基仍不受影响。
• 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）。
• Regioselective oxidative cleavage of benzylidene acetals: synthesis of highly functionalized chiral intermediates
  作者：Pon Minor Senthilkumar、Appu Aravind、Sundarababu Baskaran

  DOI：10.1016/j.tetlet.2006.12.078

  日期：2007.2

  A mild and efficient method for the regioselective oxidative cleavage of benzylidene acetals with KBrO3/Na2S2O4 under bi-phasic conditions (EtOAc/H2O), leading to highly functionalized chiral intermediates, is reported.

  报道了在两相条件下（EtOAc / H 2 O）用KBrO 3 / Na 2 S 2 O 4进行亚苄基乙缩醛的区域选择性氧化裂解的温和有效方法，导致高度官能化的手性中间体。
• Oxidative Cleavage of 4,6-<i>O</i>-Benzylidene Ring with t-Butyl Hydroperoxide and Copper(II) Chloride. Preparation of Methyl 4-<i>O</i>- and 6-<i>O</i>-Benzoylhexopyranoside Derivatives
  作者：Ken-ichi Sato、Tetsutaro Igarashi、Yukio Yanagisawa、Nobuya Kawauchi、Hironobu Hashimoto、Juji Yoshimura

  DOI：10.1246/cl.1988.1699

  日期：1988.10.5

  Copper(II) chloride and palladium(II) acetate were found to be highly effective catalysts for oxidative cleavage of O-benzylidene ring with t-butyl hydroperoxide. Using the former catalyst 4,6-O-benzylidenehexopyranoside derivatives were converted into the corresponding 4- and 6-benzoates in high yields. This reaction was also applicable for conversion of benzyl group into benzoyl one.

  发现氯化铜 (II) 和乙酸钯 (II) 是使用叔丁基氢过氧化物氧化裂解 O-亚苄基环的高效催化剂。使用前一种催化剂，4,6-O-亚苄基己基吡喃糖苷衍生物以高产率转化为相应的4-和6-苯甲酸酯。该反应也适用于将苄基转化为苯甲酰基。
• Facile oxidative cleavage of benzylidene acetals using molecular oxygen catalyzed by N -hydroxyphthalimide/Co(OAc) 2
  作者：Yongsheng Chen、Peng George Wang

  DOI：10.1016/s0040-4039(01)00905-4

  日期：2001.7

  Benzylidene acetals derived from 1,2- and 1,3-diols undergo facile oxidative cleavage to give hydroxy benzoate esters with molecular oxygen in the presence of catalytic amount of N-hydroxyphthalimide/Co(OAc)2.

  在催化量的N-羟基邻苯二甲酰亚胺/ Co（OAc）2存在下，衍生自1,2-和1,3-二醇的亚苄基缩醛容易进行氧化裂解，从而与分子氧一起生成羟基苯甲酸酯。