3-O-benzoyl-1,2:5,6-di-O-isopropylidene-α-D-glucofuranose | 13964-22-2

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 3-O-benzoyl-1,2:5,6-di-O-isopropylidene-α-D-glucofuranose
• 英文别名: (3aR,5R,6S,6aR)-5-((R)-2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-6-yl benzoate；3-O-Benzoyl-1,2:5,6-di-O-isopropylidene-I+/--D-glucofuranose；[(3aR,5R,6S,6aR)-5-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxol-6-yl] benzoate
• CAS: 13964-22-2
• 化学式: C₁₉H₂₄O₇
• 分子量: 364.395
• InChiKey: SGEQHRHPFTZGON-OWVAZHOYSA-N

物化性质

• 熔点：
  66 °C
• 沸点：
  441.4±45.0 °C(Predicted)
• 密度：
  1.28±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  26
• 可旋转键数：
  4
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.63
• 拓扑面积：
  72.4
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  3-O-benzoyl-1,2:5,6-di-O-isopropylidene-α-D-glucofuranose 在 咪唑 、 三乙胺 作用下， 以 甲醇 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 0.42h， 生成 3-O-[(t-butyl)dimethylsilyl]-1,2:5,6-di-O-isopropylidene-α-D-glucofuranose
  参考文献：
  名称：

  RAPID CARBOHYDRATE PROTECTING GROUP MANIPULATIONS ASSISTED BY MICROWAVE DIELECTRIC HEATING

  摘要：

  The protocols for oligosaccharide synthesis are often tedious due to extended synthetic routes and reaction times. We herein describe methods assisted by microwave dielectric heating, which enable very short reaction times and high yields for the introduction and removal of eleven of the most commonly used protecting groups in carbohydrate syntheses. Several examples are reported, where solid supported reagents in combination with microwave dielectric heating have been used. This results in both faster and easier synthesis and purification.

  DOI：

  10.1081/car-100105712
• 作为产物：
  描述：

  3-O-[(t-butyl)dimethylsilyl]-1,2:5,6-di-O-isopropylidene-α-D-glucofuranose 在 吡啶 、 potassium fluoride 、 四丁基溴化铵 作用下， 以 水 、 乙腈 为溶剂， 反应 0.2h， 生成 3-O-benzoyl-1,2:5,6-di-O-isopropylidene-α-D-glucofuranose
  参考文献：
  名称：

  RAPID CARBOHYDRATE PROTECTING GROUP MANIPULATIONS ASSISTED BY MICROWAVE DIELECTRIC HEATING

  摘要：

  The protocols for oligosaccharide synthesis are often tedious due to extended synthetic routes and reaction times. We herein describe methods assisted by microwave dielectric heating, which enable very short reaction times and high yields for the introduction and removal of eleven of the most commonly used protecting groups in carbohydrate syntheses. Several examples are reported, where solid supported reagents in combination with microwave dielectric heating have been used. This results in both faster and easier synthesis and purification.

  DOI：

  10.1081/car-100105712
• 作为试剂：
  描述：

  甲醇 、 环己烯 在 3-O-benzoyl-1,2:5,6-di-O-isopropylidene-α-D-glucofuranose 作用下， 反应 6.0h， 以1.4%的产率得到cis,syn,cis-Tricyclo<6.4.0.02,7>dodecan
  参考文献：
  名称：

  Asaoka, Sadayuki; Horiguchi, Hisashi; Wada, Takehiko, Journal of the Chemical Society. Perkin Transactions 2 (2001), 2000, # 4, p. 737 - 747

  摘要：

  DOI：

文献信息

• Visible-Light Photocatalysis Employing Dye-Sensitized Semiconductor: Selective Aerobic Oxidation of Benzyl Ethers
  作者：Li Ren、Ming-Meng Yang、Chen-Ho Tung、Li-Zhu Wu、Huan Cong

  DOI：10.1021/acscatal.7b03029

  日期：2017.12.1

  The aerobic oxidation is an attractive approach toward environmentally benign synthesis of fine chemicals. In addition, dye-sensitized semiconductors are underdeveloped photocatalysts for selective organic synthesis. With the aid of catalytic eosin Y-sensitized titanium dioxide, we have developed efficient aerobic photooxidation of benzyl ethers to benzoates, featuring low cost, high atom economy,

  有氧氧化是一种在环境上良性合成精细化学品的有吸引力的方法。另外，染料敏化半导体是用于选择性有机合成的未开发的光催化剂。借助于催化曙红Y敏化的二氧化钛，我们开发了苄基醚有效的好氧光氧化为苯甲酸酯的方法，具有低成本，高原子经济性，广泛的底物范围和用户友好的设置的特点。此外，初步的机理研究表明，反应途径可能需要通过可分离的过氧化物中间体进行光诱导的基于自由基的两步过程。
• Mild Deprotection of Benzyl Ether Protective Groups with Ozone
  作者：Pierre Angibeaud、Jacques Defaye、Andrée Gadelle、Jean-Pierre Utille

  DOI：10.1055/s-1985-31447

  日期：——

  Benzyl ether protective groups are oxidatively removed by ozone under relatively mild conditions. Reaction products are benzoic ester, benzoic acid, and the corresponding alcohol. Subsequent deacylation with sodium methoxide affords a convenient debenzylation technique which has been applied to various O-benzyl protected carbohydrates 1 to afford the deprotected species 2. Glycosides and acetals are unaffected by the treatment.

  苄醚保护基在相对温和的条件下可通过臭氧进行氧化性去除。反应产物为苯甲酸酯、苯甲酸和相应的醇。随后用甲醇钠进行脱酰反应，提供了一种便捷的去苄基化技术，该技术已应用于各种O-苄基保护的碳水化合物1，得到去保护的物种2。糖苷和缩醛不受此处理影响。
• Zn-Catalyzed<i>tert</i>-Butyl Nicotinate-Directed Amide Cleavage as a Biomimic of Metallo-Exopeptidase Activity
  作者：Clarence C. D. Wybon、Carl Mensch、Charlie Hollanders、Charlène Gadais、Wouter A. Herrebout、Steven Ballet、Bert U. W. Maes

  DOI：10.1021/acscatal.7b02599

  日期：2018.1.5

  A two-step catalytic amide-to-ester transformation of primary amides under mild reaction conditions has been developed. A tert-butyl nicotinate (tBu nic) directing group is easily introduced onto primary amides via Pd-catalyzed amidation with tert-butyl 2-chloronicotinate. A weak base (Cs2CO3 or K2CO3) at 40–50 °C can be used provided that 1,1′-bis(dicyclohexylphosphino)ferrocene is selected as ligand

  已经开发了在温和的反应条件下伯酰胺的两步催化酰胺转化为酯的方法。甲叔丁基烟酸甲酯（吨卜NIC）指示组很容易通过Pd催化的酰胺化与引入到伯酰胺叔丁基2-氯烟。如果选择1,1'-双（二环己基膦基）二茂铁作为配体，则可以使用40–50°C的弱碱（Cs 2 CO 3或K 2 CO 3）。所述吨卜NIC活化酰胺随后允许的Zn（OAc）2催化的醇解nonsolvolytic在吨在中性反应条件下于40–60°C的BuOAc。激活机制是仿生的：在引导基团中吡啶的C3酯取代基构成了适合Zn螯合的反式构象异构体，C═O酰胺-Zn-N引导基团，并且Zn配位醇还被激活为亲核试剂通过氢键与催化剂的乙酸酯配体键合。另外，乙酸盐配体有助于分子内O至N质子转移。化学选择性相对于其他官能团以及与具有挑战性的反应伙伴（如肽，糖和固醇）的相容性说明了这种两步酰胺裂解方法的合成适用性。该Ť卜NIC酰胺在裂解前不需要纯化。初步实验
• Nucleophilic Substitution Reactions of (Alkoxymethylene)dimethylammonium Chloride
  作者：Anthony G. M. Barrett、D. Christopher Braddock、Rachel A. James、Nobuyuki Koike、Panayiotis A. Procopiou

  DOI：10.1021/jo980583j

  日期：1998.9.1

  The use of imidate esters as potential replacements for diethyl azodicarboxylate and triphenylphosphine in the Mitsunobu reaction is described. A series of secondary alcohols were allowed to react with (chloromethylene)dimethylammonium chloride, generated from dimethylformamide (DMF) and oxalyl chloride, to give imidate esters. Reaction of these salts with potassium benzoate or potassium phthalimide

  描述了在Mitsunobu反应中使用亚氨酸酯作为偶氮二羧酸二乙酯和三苯基膦的潜在替代物。使一系列仲醇与由二甲基甲酰胺（DMF）和草酰氯生成的（氯亚甲基）二甲基氯化铵反应，得到亚氨酸酯。这些盐与苯甲酸钾或邻苯二甲酰亚胺钾的反应以极好的收率得到了S（N）2取代的产物，且立体化学清晰易懂。讨论了反应条件的优化，作为通过减少所需亲核试剂的量来增加该方法的原子经济性的手段。
• A mild and efficient method for chemoselective deprotection of acetonides by bismuth(III) trichloride
  作者：N.Raghavendra Swamy、Y Venkateswarlu

  DOI：10.1016/s0040-4039(02)01809-9

  日期：2002.10

  Acetonides undergo chemoselective deprotection to afford the corresponding 1,2-diols in excellent yields using bismuth trichloride in acetonitrile/dichloromethane at ambient temperature.

  在环境温度下，使用三氯化铋的乙腈/二氯甲烷溶液，对乙酰丙酮进行化学选择性脱保护，以优异的收率得到相应的1,2-二醇。