2-O-benzoyl-3,4,6-tri-O-benzyl-α-D-mannopyranose | 869213-53-6

• 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: 2-O-benzoyl-3,4,6-tri-O-benzyl-α-D-mannopyranose
• 英文别名: 2-O-benzoyl-3,4,6-tri-O-benzyl mannopyranose；2-O-benzoyl-3,4,6-tetra-O-benzyl-α-D-mannopyranoside；[(2S,3S,4S,5R,6R)-2-hydroxy-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-3-yl] benzoate
• CAS: 869213-53-6
• 化学式: C₃₄H₃₄O₇
• 分子量: 554.64
• InChiKey: FRHKLSCGNMWMMT-KWXXMMNJSA-N

物化性质

• 沸点：
  687.9±55.0 °C(Predicted)
• 密度：
  1.26±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.2
• 重原子数：
  41
• 可旋转键数：
  13
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.26
• 拓扑面积：
  83.4
• 氢给体数：
  1
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  2-O-benzoyl-3,4,6-tri-O-benzyl-α-D-mannopyranose 在 吡啶 、 甲醇 、 4-二甲氨基吡啶 、 三氟甲磺酸三甲基硅酯 、 sodium methylate 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 二氯甲烷 为溶剂， 反应 3.17h， 生成 phenyl (3,4,6-tri-O-benzyl-α-D-mannopyranosyl)(1-2)-2-O-chloroacetyl-3,4,6-tri-O-benzyl-1-thio-α-D-mannopyranoside
  参考文献：
  名称：

  铁甲甲烷八叠球菌的天冬酰胺连接古细菌N-聚糖的化学合成

  摘要：

  在古细菌中已经鉴定出几种N-连接的糖蛋白，并且越来越多的证据表明N-聚糖在极端条件下与古细菌的存活和功能有关。古细菌N-聚糖的化学合成代表了理解古细菌蛋白质糖基化假定功能的关键步骤。本文报道了使用高度收敛的[3 + 3]糖基化方法以高总收率从产甲烷杆菌（Methanothermus fervidus）首次合成古L-天冬酰胺连接的六糖。合成依赖于为正交糖基化和晚期N-天冬氨酰化反应的区域选择性保护的硫代糖苷结构单元的有效制备。

  DOI：

  10.1002/chem.201304950
• 作为产物：
  描述：

  1,2-O-(α-methoxybenzylidene)-3,4,6-tri-O-benzoyl-β-D-mannopyranose 在 咪唑 、 sodium methylate 、 sodium hydride 、 溶剂黄146 作用下， 以 甲醇 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 29.0h， 生成 2-O-benzoyl-3,4,6-tri-O-benzyl-α-D-mannopyranose
  参考文献：
  名称：

  Synthesis of a Core Arabinomannan Oligosaccharide of Mycobacterium tuberculosis

  摘要：

  The synthesis of a core arabinomannan (AM) oligosaccharide from Mycobacterium tuberculosis has been achieved using a convergent [6 + 6] glycosylation strategy and a defined set of building blocks. Dodecasaccharide 1, containing the key AM structural features of lipoarabinomannan (LAM), was obtained in excellent yield and selectivity from hexamannan 3 and hexaarabinan 5. This flexible synthetic strategy involves late-stage couplings and modifications, thus providing ready access to several different LAM fragments. The incorporation of a thiol linker at the reducing end of the oligosaccharide allows for the attachment of these compounds to microarrays and protein carriers.

  DOI：

  10.1021/jo061233x

文献信息

• Comparing n-pentenyl orthoesters and n-pentenyl glycosides as alternative glycosyl donors
  作者：Mateusz Mach、Urs Schlueter、Felix Mathew、Bert Fraser-Reid、Kevin C Hazen

  DOI：10.1016/s0040-4020(02)00671-3

  日期：2002.9

  As is well known, cyclic 1,2-glycosyl orthoesters undergo ready acid catalyzed rearrangement to 2-O-acyl glycosides in which the alkoxy group is transferred from the orthoester to the anomeric center in a highly stereocontrolled process. The related n-pentenyl derivatives are unique in that either the orthoester (NPOE) or its rearrangement product (NPGAC) can function as a glycosyl donor, and mechanistic

  众所周知，环状1，2-糖基原酸酯经历了容易的酸催化重排成2- O-酰基糖苷，其中烷氧基以高度立体可控的过程从原酸酯转移到异头中心。相关的正戊烯基衍生物的独特之处在于原酸酯（NPOE）或它的重排产物（NPG AC）都可以作为糖基供体，并且从机械方面的考虑来看，两者都应该（或可能！）产生相同的产物。 ）是由反式原酸酯化，糖苷化，糖基酯化等产生的。实验表明，通过精心选择供体，NPOE或相关的NPG AC，可以优化从给定反应获得的产物，并特别注意反应条件，亲电子启动子，糖基受体的“大小”和实验方案。
• Unexpected Stereocontrolled Access to 1α,1′β-Disaccharides from Methyl 1,2-Ortho Esters
  作者：Clara Uriel、Juan Ventura、Ana M. Gómez、J. Cristóbal López、Bert Fraser-Reid

  DOI：10.1021/jo202335n

  日期：2012.1.6

  Mannopyranose-derived methyl 1,2-orthoacetates (R = Me) and 1,2-orthobenzoates (R = Ph) undergo stereoselective formation of 1 alpha,1'beta-disaccharides, upon treatment with BF3 center dot Et2O in CH2Cl2, rather than the expected acid-catalyzed reaction leading to methyl glycosides by way of a rearrangement-glycosylation process of the liberated methanol.
• Efficient Chemical Synthesis of a Dodecasaccharidyl Lipomannan Component of Mycobacterial Lipoarabinomannan
  作者：Bert Fraser-Reid、Siddhartha Ray Chaudhuri、K. N. Jayaprakash、Jun Lu、Changalvala V. S. Ramamurty

  DOI：10.1021/jo802000p

  日期：2008.12.19

  Lipomannan (LM) is one of the domains of lipoarabinomannan (LAM) glycolipids, the latter being one of several cell surface organic molecules that fortify mycobacterial species against external attack. Some members of mycobacterial families are pathogenic, most notably Mycobacterium tuberculosis and Mycobacterium leprae, while others are nonpathogenic, and used in the clinic, such as Mycobacterium smegmatis. Additional biological significance arises from the fact that LM has been implicated in several health disorders outside of those associated with mycobacterial pathogens, notably for treatment of bladder cancer. LM is comprised of a heavily lipidated phosphoinositide dimannoside headgroup, from which a mannan array, of varied complexity, extends. The latter consists of a 1,6-alpha-linked backbone flanked at position O2, not necessarily regularly, with alpha-linked mannosides. This paper gives an example of lipomannan synthesis in which all of the sugar components, whether functioning as donors or acceptors, are obtained from n-pentenyl orthoesters, themselves in turn prepared in three easy steps from D-mannose. Assembly of the mannan array is facilitated by the exquisite regioselectivity occasioned by the use of ytterbium triflate/N-iodosuccinimide as the trigger for reaction of n-pentenyl orthoesters.
• Synthesis of a Core Arabinomannan Oligosaccharide of <i>Mycobacterium tuberculosis</i>
  作者：Alexandra Hölemann、Bridget L. Stocker、Peter H. Seeberger

  DOI：10.1021/jo061233x

  日期：2006.10.1

  The synthesis of a core arabinomannan (AM) oligosaccharide from Mycobacterium tuberculosis has been achieved using a convergent [6 + 6] glycosylation strategy and a defined set of building blocks. Dodecasaccharide 1, containing the key AM structural features of lipoarabinomannan (LAM), was obtained in excellent yield and selectivity from hexamannan 3 and hexaarabinan 5. This flexible synthetic strategy involves late-stage couplings and modifications, thus providing ready access to several different LAM fragments. The incorporation of a thiol linker at the reducing end of the oligosaccharide allows for the attachment of these compounds to microarrays and protein carriers.
• Chemical Synthesis of Asparagine-Linked Archaeal N-Glycan from<i>Methanothermus fervidus</i>
  作者：Someswara Rao Sanapala、Suvarn S. Kulkarni

  DOI：10.1002/chem.201304950

  日期：2014.3.24

  extreme conditions. Chemical synthesis of the archaeal N‐glycans represents a crucial step towards understanding the putative function of protein glycosylation in archaea. Herein the first total synthesis of the archaeal L‐asparagine linked hexasaccharide from Methanothermus fervidus is reported using a highly convergent [3+3] glycosylation approach in high overall yields. The synthesis relies on efficient

  在古细菌中已经鉴定出几种N-连接的糖蛋白，并且越来越多的证据表明N-聚糖在极端条件下与古细菌的存活和功能有关。古细菌N-聚糖的化学合成代表了理解古细菌蛋白质糖基化假定功能的关键步骤。本文报道了使用高度收敛的[3 + 3]糖基化方法以高总收率从产甲烷杆菌（Methanothermus fervidus）首次合成古L-天冬酰胺连接的六糖。合成依赖于为正交糖基化和晚期N-天冬氨酰化反应的区域选择性保护的硫代糖苷结构单元的有效制备。