ethyl 2-O-benzoyl-3,4,6-tri-O-benzyl-1-thio-α-D-mannopyranoside | 132360-46-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: ethyl 2-O-benzoyl-3,4,6-tri-O-benzyl-1-thio-α-D-mannopyranoside
• 英文别名: [(2R,3S,4S,5R,6R)-2-ethylsulfanyl-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-3-yl] benzoate
• CAS: 132360-46-4
• 化学式: C₃₆H₃₈O₆S
• 分子量: 598.76
• InChiKey: FCBPRMRQKPWYQN-XIVIVISLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.9
• 重原子数：
  43
• 可旋转键数：
  15
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  88.5
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  ethyl 2-O-benzoyl-3,4,6-tri-O-benzyl-1-thio-α-D-mannopyranoside 在 溴 、 silver trifluoromethanesulfonate 作用下， 以 二氯甲烷 、 甲苯 为溶剂， 反应 0.83h， 生成 ethyl 2-O-benzoyl-3,4,6-tri-O-benzyl-α-D-mannopyranosyl-(1->6)-2,3,4-tri-O-benzyl-1-α-D-thiomannopyranoside
  参考文献：
  名称：

  Synthesis of the Core Tetrasaccharide of Trypanosoma cruzi Glycoinositolphospholipids: Manp(α1→6)-Manp(α1→4)-6-(2-aminoethylphosphonic acid)-GlcNp(α1→6)-myo-Ins-1-PO₄

  摘要：

  Synthesis of the core tetrasaccharide Manp(alpha 1 -> 6)-Manp((alpha 1 -> 4)-6-(2-aminoethylphosphonic acid)GlcNp((alpha 1 -> 6)-myo-Ins-1-PO4, found in glycoinositolphospholipids of Trypanosoma cruzi parasites, is described. The key building block, 6-0-(2-azido-3-0-benzyl-6-0-((2-benzyloxycarbonylaminoethyl)phosphonic acid benzyl ester)-2-deoxy-alpha-D-glueopyranosyl)-1-di-O-benzylphosphoryl-4,5-O-isopropylidene-2,3-O-(D-1,7,7-trimethyl[2,2,1]bicyclohept-6-ylidene)-D-Myo-inositol, was synthesized using a partially protected glucosyl D-camphorinositolphosphate and a (2-benzyloxycarbonylaminoethyl)phosphonic acid derivative in a regioselective phosphonate esterfication. Elongation with ethyl 2-O-benzoyl-3,4,6-tri-O-benzyl-alpha-D-mannopyranosyl-(1 -> 6)-2,3,4-tri-O-benzyl-l-alpha-D-thiomannopyrano- side using dimethyl(methylthio)sulfonium trifluoromethanesulfonate gave A fully protected tetrasaccharide which was successfully deprotected subsequently with sodium methoxide, sodium in liquid ammonia, and aq hydrochloric acid to give title compound.

  DOI：

  10.1021/jo0508595
• 作为产物：
  描述：

  ethyl 2-O-acetyl-3,4,6-tri-O-benzyl-1-thio-α-D-mannopyranoside 在 吡啶 、 sodium methylate 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 1.5h， 生成 ethyl 2-O-benzoyl-3,4,6-tri-O-benzyl-1-thio-α-D-mannopyranoside
  参考文献：
  名称：

  使用单电子转移均质试剂进行糖基化。在有效合成N-糖基蛋白的三甘露糖核中的​​应用

  摘要：

  甲基2,4-二-O-苄基-β-D-甘露吡喃糖苷与乙基2-O-苯甲酰基-3,4,6-三-O-苄基-1-硫代-α-D-甘露吡喃糖苷的双糖基化作用六氯锑酸三（4-溴苯基）铵基促进剂，一种稳定的，商品化的，结晶性的阳离子，在二苯甲基化后的甲基2,4-二-O-苄基-3,6-二-O-（3,4,6-tri -O-苄基-α-D-甘露吡喃糖苷的产率极高，还研究了其他甘露糖基供体。

  DOI：

  10.1016/0008-6215(92)85007-m

文献信息

• Palladium(<scp>ii</scp>)-assisted activation of thioglycosides
  作者：Samira Escopy、Yashapal Singh、Alexei V. Demchenko

  DOI：10.1039/d1ob00004g

  日期：——

  Described herein is the first example of glycosidation of thioglycosides in the presence of palladium(II) bromide. While the activation with PdBr2 alone was proven feasible, higher yields and cleaner reactions were achieved when these glycosylations were performed in the presence of propargyl bromide as an additive. Preliminary mechanistic studies suggest that propargyl bromide assists the reaction

  本文描述的是在溴化钯( II )存在下硫代糖苷的糖苷化的第一个实例。虽然单独使用 PdBr 2进行活化已被证明是可行的，但当这些糖基化在炔丙基溴作为添加剂存在的情况下进行时，可以实现更高的产率和更清洁的反应。初步机理研究表明，炔丙基溴通过产生电离络合物来促进反应，从而加速离去基团的离开。研究了与不同糖基受体反应的各种硫代糖苷供体，以确定这种新反应的初始范围。还探索了硫代糖苷相对于其他离去基团的选择性和化学选择性激活。
• A Streamlined Regenerative Glycosylation Reaction: Direct, Acid‐Free Activation of Thioglycosides
  作者：Samira Escopy、Yashapal Singh、Keith J. Stine、Alexei V. Demchenko

  DOI：10.1002/chem.202003479

  日期：2021.1.4

  (HOFox) is able to mediate glycosylations via intermediacy of OFox imidates. Thioglycoside precursors were first converted into the corresponding glycosyl bromides that were then converted into the OFox imidates in the presence of Ag2O followed by the activation with catalytic Lewis acid in a regenerative fashion. Reported herein is a direct conversion of thioglycosides via the regenerative approach

  我们的小组之前曾报道过，3,3-二氟吲哚（HOFox）能够通过 OFox 亚胺酸酯的中介来介导糖基化。硫糖苷前体首先转化为相应的糖基溴化物，然后在 Ag 2 O存在下转化为 OFox 亚胺酸酯，然后以再生方式用催化路易斯酸活化。本文报道了通过再生方法直接转化硫糖苷，该方法绕过了溴化物的中介并消除了对基于重金属的促进剂的需要。在中性反应条件下仅使用 1 当量即可实现硫糖苷的直接再生活化。不含酸性添加剂的 NIS 和催化 HOFox。
• The synthesis of 1-O-(2-N-stearoyl-D-erythro-sphinganinel-phosphoryl)-2-O-(α-D-mannopyranosyl-D-myo-inositol: a fragment of the naturally occurring inositol-containing glycophosphosphingolipids
  作者：Alla Yu. Zamyatina、Vitahy I. Shvets

  DOI：10.1016/0009-3084(95)02446-p

  日期：1995.6

  sphingophospholipid was synthesized from D-erythro ceramide and optically active mannosyl-myo-inositol with the use of phosphite triester coupling procedure. The optical resolution of racemic 3,4,5,6-tetra-O-benzyl-myo-inositol to enantiomers was accomplished via diastereomeric menthoxyacetic esters. Iodonium ion-promoted glycosylation has been used for the preparation of chiral mannosyl-myo-inositol. Bis(diisoprop

  利用亚磷酸酯三酯偶联法，由D-赤型神经酰胺和旋光性甘露糖基-肌醇合成了含有鞘磷脂的手性甘露糖基肌醇。外消旋的3,4,5,6-四-O-苄基-肌肌醇对映体的旋光拆分是通过非对映体薄荷醇乙酸酯实现的。碘鎓离子促进的糖基化已用于制备手性甘露糖基-肌醇。双（二异丙基氨基）-2-氰基乙基膦已被用于引入D-赤型-3-O-苯甲酰基神经酰胺的伯羟基官能团与旋光和部分苄基的1-O-（2的仲羟基之间的磷酸二酯键-O-α-D-甘露吡喃糖基）-D-肌醇
• Use of (phenyldimethylsilyl)methoxymethyl and (phenyldimethylsilyl)methyl ethers as protecting groups for sugar hydroxyls
  作者：G.J.P.H. Boons、C.J.J. Elie、G.A. van der Matel、J.H. van Boom

  DOI：10.1016/0040-4039(90)80107-w

  日期：1990.1

  The reagent (phenyldimethylsilyl)methoxymethyl chioride (SMOM-Cl) proved to be very convenient for the formation of the corresponding SMOM ethers of primary and secondary hydroxyls of sugars. Further, (phenyldimethylsilyl)methanol (SMOH), the precursor of SMOM-Cl, could be used for the protection of the anomeric centre with the SM group. Both protecting groups can be removed smoothly by oxidation with

  事实证明，试剂（苯基二甲基甲硅烷基）甲氧基甲基氯化物（SMOM-Cl）对于糖的伯羟基和仲羟基的相应SMOM醚的形成非常方便。此外，SMOM-Cl的前体（苯基二甲基甲硅烷基）甲醇（SMOH）可用于保护带有SM基团的异头中心。可以通过用KBr / AcOOH氧化将两个保护基顺利除去，并且与糖化学中的保护基操作兼容。
• Dissection of the effects that govern thioglucoside and thiomannoside reactivity
  作者：Mads Heuckendorff、Lulu Teressa Poulsen、Christinne Hedberg、Henrik H. Jensen

  DOI：10.1039/c7ob02968c

  日期：——

  Neighboring group effects were investigated in gluco- and manno-configured thioglycosides under NIS/TfOH activation. Donors possessing a 2-O-benzoyl group that are capable (1,2-trans) and incapable (1,2-cis) of exerting nucleophilic push were compared with donors possessing a participatory neutral 2-O-benzyl group. By using competition experiments between sets of glycosyl donors the direct effect of

  在NIS / TfOH活化下，在葡萄糖和甘露聚糖配置的硫糖苷中研究了相邻基团的作用。将具有2- O-苯甲酰基的施主与具有参与性中性2- O-苄基的施主进行比较，所述施主具有能够（1,2-反式）和不能（1,2-顺式）发挥亲核作用。通过使用糖基供体组之间的竞争实验，邻近基团参与的直接效应和2- O的电子吸收效应-苯甲酰基可被分离。该研究使人们深入了解了1和2位的立体化学，以及糖苷配基的性质（Ph或Et）如何对糖基供体的反应性产生显着影响。