methyl 2-O-acetyl-3,4,6-tri-O-benzyl-β-D-glucopyranoside | 82231-32-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 2-O-acetyl-3,4,6-tri-O-benzyl-β-D-glucopyranoside
• 英文别名: [(2R,3R,4S,5R,6R)-2-methoxy-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-3-yl] acetate
• CAS: 82231-32-1
• 化学式: C₃₀H₃₄O₇
• 分子量: 506.596
• InChiKey: GKWUQQXIMMBMDF-CMPUJJQDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  37
• 可旋转键数：
  13
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.37
• 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：

  methyl 2-O-acetyl-3,4,6-tri-O-benzyl-β-D-glucopyranoside 在 四氯化钛 作用下， 以 二氯甲烷 为溶剂， 反应 0.08h， 生成 Methyl 2-O-acetyl-3,4,6-tri-O-benzyl-α-D-glucopyranoside
  参考文献：
  名称：

  四氯化钛快速异构化聚-O-苄基-β-D-吡喃葡萄糖苷的研究

  摘要：

  四氯化钛在 25 °C 的二氯甲烷中快速异构化甲基 2,3,4,6-四-O-苄基-β-D-吡喃葡萄糖苷。描述了 C-5 上的苄氧基甲基和糖苷的环氧协同促进反应的证据。该试剂将几种二糖衍生物的糖苷间键异构化。

  DOI：

  10.1246/bcsj.55.1092
• 作为产物：
  描述：

  3,4,6-三苄氧基-D-葡萄烯糖 在 吡啶 、 二甲基二环氧乙烷 作用下， 以 二氯甲烷 、 丙酮 为溶剂， 反应 6.0h， 生成 methyl 2-O-acetyl-3,4,6-tri-O-benzyl-β-D-glucopyranoside
  参考文献：
  名称：

  关于糖基的直接环氧化：应用迭代策略合成 β-连接的寡糖

  摘要：

  合成这些低聚糖 a partir du tri-O-acetyl-3,4,6 glucal et du dimethyl-3,3 dioxiranne

  DOI：

  10.1021/ja00199a028

文献信息

• Au^III-Halide/Phenylacetylene-Cata­lysed Glycosylations Using 1-<i>O</i>-Acetyl­furanoses and Pyranose 1,2-Ortho­esters as Glycosyl Donors
  作者：Asadulla Mallick、Yakkala Mallikharjunarao、Parasuraman Rajasekaran、Rashmi Roy、Yashwant D. Vankar

  DOI：10.1002/ejoc.201501245

  日期：2016.1

  1-O-Acetylfuranoses and pyranose 1,2-orthoesters were activated with an AuIII halide/phenylacetylene relay catalyst system, and they acted as excellent glycosyl donors. Thus, 1-O-acetyl-D-ribofuranose, 1-O-acetyl-D-lyxofuranose, and 1,2-orthoesters selectively gave the corresponding 1,2-trans glycosides, whereas 1-O-acetyl-D-arabinofuranose and 1-O-acetyl-D-xylofuranose both gave mixtures of 1,2-trans

  1-O-乙酰呋喃糖和吡喃糖 1,2-原酸酯用 AuIII 卤化物/苯乙炔中继催化剂系统活化，它们是优良的糖基供体。因此，1-O-乙酰基-D-呋喃核糖、1-O-乙酰基-D-lyxofuranose 和 1,2-原酸酯选择性地产生相应的 1,2-反式糖苷，而 1-O-乙酰基-D-阿拉伯呋喃糖和1-O-乙酰基-D-呋喃木糖均产生1,2-反式和1,2-顺式糖苷的混合物，其中以1,2-反式糖苷为主。
• Methyltrioxorhenium-Catalyzed Epoxidation-Methanolysis of Glycals under Homogeneous and Heterogeneous Conditions
  作者：Andrea Goti、Francesca Cardona、Gianluca Soldaini、Claudia Crestini、Cinzia Fiani、Raffaele Saladino

  DOI：10.1002/adsc.200505412

  日期：2006.3

  The efficient and high yielding domino epoxidation-methanolysis of glycals 8–15 has been achieved by oxidation with UHP in MeOH catalyzed by MTO. The products have been conveniently isolated as 2-acetoxy derivatives 16–23a, b by direct acetylation of the crude mixtures. Homogeneous MTO-amine complexes 5–7, heterogeneous poly(4-vinylpyridine)/MTO compounds I–III, and microencapsulated polystyrene/MTO

  高效和高产多米诺烯糖的环氧化-甲醇8 - 15已被氧化，UHP在MeOH实现催化由MTO。该产品已被方便地分离为2-乙酰氧基衍生物16 - 23A，B通过将粗混合物直接乙酰化。均质MTO -胺络合物5 - 7，异构聚（4-乙烯基吡啶）/ MTO化合物我- III，和微囊化聚苯乙烯/ MTO系统IV - VII还测试并证明了它们作为氧化步骤催化剂的有效性。取决于基质，氧化的表面非对映选择性从令人满意的到优异的，并且可以通过充分筛选催化剂来优化。在环境友好的实验条件下，使用简单的后处理程序即可获得底物的完全转化和近乎定量的产品收率。
• Methyltrioxorhenium catalyzed domino epoxidation-nucleophilic ring opening of glycals
  作者：Gianluca Soldaini、Francesca Cardona、Andrea Goti

  DOI：10.1016/s0040-4039(03)01386-8

  日期：2003.7

  The use of catalytic methylrhenium trioxide (MTO) and urea hydrogen peroxide in room temperature ionic liquid for the hydroxyglycosylation with glycals in a domino fashion is reported. Excellent conversions and good selectivities for the epoxidation reaction were observed. Application to the synthesis of glycosylphosphates, good glycosyl donors, has been studied. (C) 2003 Elsevier Ltd. All rights reserved.
• Application of 2-Substituted Benzyl Groups in Stereoselective Glycosylation
  作者：Szymon Buda、Mirosław Nawój、Patrycja Gołębiowska、Karol Dyduch、Artur Michalak、Jacek Mlynarski

  DOI：10.1021/jo502186f

  日期：2015.1.16

  The use of 2-O-(2-nitrobenzyl) and 2-O-(2-cyanobenzyl) groups controls stereoselective formation of 1,2-trans-glycosidic linkages via the arming participation effect. The observed stereoselectivity likely arises from the intramolecular formation of cyclic intermediate between the electron-rich substituent and the donor oxacarbenium ion providing the expected facial selectivity for attack of the glycoside acceptor. The stereodirecting effect of the 2-nitro- and 2-cyanobenzyl groups attached at the remote position (C-3, C-4, and C-6) of the donor molecule have also been investigated. To prove the postulated mechanism based on the participation effect of 2-substituted benzyl groups in the glycosylation stereoselectivity we used DFT theoretical calculation methodology.
• Direct epoxidation of d-glucal and d-galactal derivatives with in situ generated DMDO
  作者：Pavel Cheshev、Alberto Marra、Alessandro Dondoni

  DOI：10.1016/j.carres.2006.09.003

  日期：2006.11

  A multi-gram epoxidation of 3,4,6-tri-O-benzyl-D-glucal and D-galactal with dimethyldioxirane (DMDO) generated in situ from Oxone (R)/acetone in a biphasic system (CH2Cl2-aqueous NaHCO3) resulted in the formation of the corresponding 1,2-anhydrosugars in a 99% yield and 100% selectivity. In a similar way, 3,4,6-tri-O-acetyl-D-glucal afforded a 7:1 mixture of the corresponding gluco and manno derivatives in an 87% overall yield. (c) 2006 Elsevier Ltd. All rights reserved.