苯基吡喃己糖苷 | 2871-15-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 苯基吡喃己糖苷
• 英文名称: Phenyl α-D-galactopyranoside
• 英文别名: phenyl-α-D-galactopyranoside；phenyl-α-D-galactopyranoside；Phenyl-α-D-galactopyranosid；Phenyl-<α-D-galactopyranosid>；Phenyl α-D-galactopyranosid；Phenyl-α-D-galactopyranosid；Phenyl-alpha-D-galactopyranoside；(2R,3R,4S,5R,6R)-2-(hydroxymethyl)-6-phenoxyoxane-3,4,5-triol
• CAS: 2871-15-0
• 化学式: C₁₂H₁₆O₆
• mdl: MFCD00064094
• 分子量: 256.255
• InChiKey: NEZJDVYDSZTRFS-IIRVCBMXSA-N

物化性质

• 熔点：
  165.5 °C

计算性质

• 辛醇/水分配系数(LogP)：
  -0.9
• 重原子数：
  18
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  99.4
• 氢给体数：
  4
• 氢受体数：
  6

安全信息

• 海关编码：
  2932999099

反应信息

• 作为反应物：
  描述：

  苯基吡喃己糖苷 在 phenyltrimethylammonium tribromide 、 potassium carbonate 作用下， 以 四氢呋喃 为溶剂， 反应 4.0h， 以92%的产率得到phenyl 4-keto-α-D-glucopyranoside
  参考文献：
  名称：

  Catalytic and Regioselective Oxidation of Carbohydrates To Synthesize Keto-Sugars under Mild Conditions

  摘要：

  A new catalytic and regioselective approach for the synthesis of keto-sugars is described. An organotin catalyst, Oc2SnCl2, in the presence of trimethylphenylammonium tribromide ([TMPhA](+)Br3(-)) accelerates the regioselective oxidation at the "axial"-OH group of 1,2-diol moieties in galactopyranosides. The reaction conditions can also be used for the regioselective oxidation of various carbohydrates.

  DOI：

  10.1021/ol502344h
• 作为产物：
  描述：

  (2R,3S,4S,5R,6R)-2-(acetoxymethyl)-6-phenoxytetrahydro-2H-pyran-3,4,5-triyl triacetate 在 甲醇 、 sodium methylate 作用下， 生成 苯基吡喃己糖苷
  参考文献：
  名称：

  Helferich; Appel, Hoppe-Seyler's Zeitschrift fur Physiologische Chemie, 1932, vol. 205, p. 231,237

  摘要：

  DOI：

文献信息

• Substituent effects on the regioselectivity of enzymatic acylation of 6-O-alkylglycopyranosides using Pseudomonas cepacia lipase
  作者：David A. MacManus、Evgeny N. Vulfson

  DOI：10.1016/0008-6215(95)00292-8

  日期：1995.12

  Abstract The regioselectivity of acylation of a range of 6- O -protected glycosides using Pseudomonas cepacia lipase in vinyl acetate was investigated. In general, α-glycosides were acylated at the O-2 position and β-glycosides were acylated at the O-3 position. The effects of varying the size/hydrophobicity of the O-6 and anomeric substituents on the regioselectivity of the reaction are discussed

  摘要研究了假单胞菌洋葱脂肪酶在乙酸乙烯酯中酰化一系列6-O-保护的糖苷的区域选择性。通常，α-糖苷在O-2位被酰化，而β-糖苷在O-3位被酰化。根据底物在酶活性位点上的结合，讨论了改变O-6和端基异构体取代基的大小/疏水性对反应区域选择性的影响。
• Asymmetric hydrogenation - influence of the structure of carbohydrate derived catalysts on the relative enantioselectivity QH/Me regarding acid and ester substrates and its inversion - selectivity increase in water by amphiphiles
  作者：Rüdiger Selke、Manuela Ohff、Andreas Riepe

  DOI：10.1016/s0040-4020(96)00953-2

  日期：1996.11

  resulting in an unusual low relative enantioselectivityQ=qH/qMe of 0.3 for the precatalysts 4e and 4f. Deprotected, 4,6-OH-group bearing catalysts 1-4g,h generally show smaller differences of %ee in methanol or benzene, however, not in water. Under addition of amphiphiles a in comparison with blanks b the relative enantioselectivity Q=qa/qb clearly increases for both groups of catalysts - in most cases

  4,6 - O-苄叉基保护的2,3-双（O-二苯基膦基）-δ-吡喃葡萄糖苷铑（I）螯合物预催化剂1-4e ，f显示了对（Z）-2- N-酰氨基丙烯酸甲酯的加氢作用6 -8随轴向取向的六吡喃糖苷取代基数量的增加，对映选择性逐步降低。对于类似的底物酸6h-8h的降低甚至更强，导致预催化剂4e和4f的相对低的相对对映选择性Q = q H / q Me为0.3。脱保护的含4,6-OH基的催化剂1-4g，h通常在甲醇或苯中显示出较小的％ee差异，而在水中则显示出较小的％ee差异。与空白b相比，在添加两亲性a的情况下，两组催化剂的相对对映选择性Q = q a / q b明显增加-在大多数情况下，Q值在3到8之间-与催化剂的中性或离子性质无关两亲的。
• Stereocontrolled Synthesis of Phenolic α-d-Glycopyranosides
  作者：Stephen Hanessian、Gabrielle St-Pierre、Laila Dafik、Ellen Klegraf

  DOI：10.1055/s-0035-1561461

  日期：——

  Dedicated to Professor Richard Schmidt for his seminal contributions to glycoside synthesis Abstract Adopting the ‘remote activation concept’ toward stereocontrolled glycoside synthesis with minimal use of protection groups, a general synthesis of phenolic 1,2-cis glycopyranosides is reported, as exemplified by aryl α-d-galacto-, α-d-gluco- and 2-azido α-d-glucopyranosides among others using glycosyl

  致力于Richard Schmidt教授对糖苷合成的开创性贡献 抽象的 据报道，采用“远程激活概念”，以最少的保护基使用立体控制的糖苷合成，已报道了酚类1,2-顺式糖吡喃糖苷的一般合成，例如芳基α- d-半乳糖基，α- d-葡萄糖基和2-叠氮基α- d-吡喃葡萄糖苷，尤其是使用带有异头（3-溴-2-吡啶氧基）基团并由三氟甲磺酸甲酯催化的糖基供体。 据报道，采用“远程激活概念”，以最少的保护基使用立体控制的糖苷合成，已报道了酚类1,2-顺式糖吡喃糖苷的一般合成，例如芳基α- d-半乳糖基，α- d-葡萄糖基和2-叠氮基α- d-吡喃葡萄糖苷，尤其是使用带有异头（3-溴-2-吡啶氧基）基团并由三氟甲磺酸甲酯催化的糖基供体。
• (METH)ACRYLATE MANUFACTURING METHOD
  申请人：TOAGOSEI CO., LTD

  公开号：US20180118658A1

  公开（公告）日：2018-05-03

  The present invention provides a (meth)acrylate manufacturing method characterized in that when manufacturing a (meth) acrylate by an ester exchange reaction between an alcohol and a monofunctional (meth)acrylate using catalyst A and catalyst B together, contact treatment of the ester exchange reaction product with adsorbent C is performed. Catalyst A: One or more kinds of compounds selected from a group consisting of cyclic tertiary amines with an azabicyclo structure and salts or complexes thereof, amidine and salts or complexes thereof, compounds with a pyridine ring and salts or complexes thereof, phosphines and salts or complexes thereof, and compounds with a tertiary diamine structure and salts or complexes thereof. Catalyst B: One or more kinds of compounds selected from a group consisting of compounds comprising zinc. Adsorbent C: One or more kinds of compounds selected from a group consisting of oxides and hydroxides comprising at least one of magnesium, aluminum and silicon.

  本发明提供了一种（甲基）丙烯酸酯制备方法，其特征在于通过在使用催化剂A和催化剂B一起进行醇和单官能基（甲基）丙烯酸酯之间的酯交换反应制备（甲基）丙烯酸酯时，对酯交换反应产物进行与吸附剂C的接触处理。催化剂A：从含有氮杂双环结构的环状三级胺及其盐或络合物、胺嘧啶及其盐或络合物、含有吡啶环的化合物及其盐或络合物、膦及其盐或络合物、以及含有三级二胺结构的化合物及其盐或络合物中选择的一种或多种化合物。催化剂B：从含锌化合物中选择的一种或多种化合物。吸附剂C：从含有镁、铝和硅中至少一种的氧化物和氢氧化物中选择的一种或多种化合物。
• MULTIFUNCTIONAL (METH)ACRYLATE MANUFACTURING METHOD
  申请人：TOAGOSEI CO., LTD.

  公开号：US20170204044A1

  公开（公告）日：2017-07-20

  [Problem] The purpose of the present invention is to obtain a multifunctional (meth)acrylate with good yield by an ester exchange reaction of a polyhydric alcohol such as pentaerythritol or dipentaerythritol with a monofunctional (meth)acrylate. [Solution] A multifunctional (meth)acrylate manufacturing method characterized in that when manufacturing a multifunctional (meth)acrylate by an ester exchange reaction of a polyhydric alcohol with a monofunctional (meth)acrylate, catalyst (A) and catalyst (B) are used together. Catalyst (A): One or more kinds of compounds selected from a group consisting of cyclic tertiary amines with an azabicyclo structure or salts or complexes thereof, amidines or salts or complexes thereof, and compounds with a pyridine ring or salts or complexes thereof. Catalyst (B): One or more kinds of compounds selected from a group consisting of zinc-containing compounds.

  [问题] 本发明的目的是通过多元醇（如戊三醇或二戊三醇）与单官能基（甲基）丙烯酸酯的酯交换反应，获得产率高的多功能（甲基）丙烯酸酯。[解决方案] 一种多功能（甲基）丙烯酸酯制备方法，其特征在于，在通过多元醇与单官能基（甲基）丙烯酸酯的酯交换反应制备多功能（甲基）丙烯酸酯时，同时使用催化剂（A）和催化剂（B）。催化剂（A）：选自具有氮杂双环结构的环三胺或其盐或络合物、酰胺或其盐或络合物以及吡啶环或其盐或络合物组成的群中的一种或多种化合物。催化剂（B）：选自含锌化合物组成的群中的一种或多种化合物。