methyl 2-O-allyl-3-O-benzyl-4,6-O-benzylidene-α-D-glucopyranoside | 157903-83-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃二恶英
• 英文名称: methyl 2-O-allyl-3-O-benzyl-4,6-O-benzylidene-α-D-glucopyranoside
• 英文别名: (2R,4aR,6S,7R,8S,8aR)-6-methoxy-2-phenyl-8-phenylmethoxy-7-prop-2-enoxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxine
• CAS: 157903-83-8
• 化学式: C₂₄H₂₈O₆
• 分子量: 412.483
• InChiKey: YFGKDDPSSKUWEG-XOJBGPSCSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  30
• 可旋转键数：
  8
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  55.4
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  methyl 2-O-allyl-3-O-benzyl-4,6-O-benzylidene-α-D-glucopyranoside 在 水 、 溶剂黄146 作用下， 反应 0.25h， 以91%的产率得到methyl 2-O-allyl-3-O-benzyl-α-D-glucopyranoside
  参考文献：
  名称：

  Synthesis of Kojidextrins and Their Protein Conjugates. Incidence of Steric Mismatch in Oligosaccharide Synthesis

  摘要：

  Kojidextrins are biologically important oligosaccharides that are involved in many physiological processes including protein glycosylation and bacterial growth. As part of our project to explore the role kojidextrins may play in bacterial pathogenesis, here we report Synthetic routes to kojibiose (54), -triose (58), -tetraose (64), and -pentaose (69) equipped with alpha-linked (hydrazinocarbonyl)-pentyl aglycon, using linear and convergent strategies. In the search for a rapid convergent strategy for the construction of extended kojidextrins, four kojibiose donors (1-4) were synthesized that contain acyl- and ether-type protecting groups in various ratios. These were tested to probe the influence of diverse protecting group assemblies on their glycosyl donor ability. Attempted condensation of these donors with kojitriose and -tetraose accepters failed to give the desired products apparently because of steric mismatch between the donor and the acceptor moieties. A one-pot procedure was developed for the covalent attachment of the synthetic saccharides through their hydrazido group to human serum albumin (HSA) using Tietze's squarate method to give neoglycoproteins containing up to 28 saccharide units per HSA.

  DOI：

  10.1021/jo962300y
• 作为产物：
  描述：

  在 barium dihydroxide 、 sodium tetrahydroborate 、 sodium hydride 、 barium(II) oxide 作用下， 以 二甲基亚砜 、 N,N-二甲基甲酰胺 为溶剂， 反应 42.0h， 生成 methyl 2-O-allyl-3-O-benzyl-4,6-O-benzylidene-α-D-glucopyranoside
  参考文献：
  名称：

  Synthesis of Kojidextrins and Their Protein Conjugates. Incidence of Steric Mismatch in Oligosaccharide Synthesis

  摘要：

  Kojidextrins are biologically important oligosaccharides that are involved in many physiological processes including protein glycosylation and bacterial growth. As part of our project to explore the role kojidextrins may play in bacterial pathogenesis, here we report Synthetic routes to kojibiose (54), -triose (58), -tetraose (64), and -pentaose (69) equipped with alpha-linked (hydrazinocarbonyl)-pentyl aglycon, using linear and convergent strategies. In the search for a rapid convergent strategy for the construction of extended kojidextrins, four kojibiose donors (1-4) were synthesized that contain acyl- and ether-type protecting groups in various ratios. These were tested to probe the influence of diverse protecting group assemblies on their glycosyl donor ability. Attempted condensation of these donors with kojitriose and -tetraose accepters failed to give the desired products apparently because of steric mismatch between the donor and the acceptor moieties. A one-pot procedure was developed for the covalent attachment of the synthetic saccharides through their hydrazido group to human serum albumin (HSA) using Tietze's squarate method to give neoglycoproteins containing up to 28 saccharide units per HSA.

  DOI：

  10.1021/jo962300y

文献信息

• METHOD FOR PREPARING HEXOSE DERIVATIVES
  申请人：Hung Shang Cheng

  公开号：US20090105466A1

  公开（公告）日：2009-04-23

  A method for preparing hexose derivatives comprises the steps of providing a silylated hexose, treating the silylated hexose with a first carbonyl compound in the presence of a catalyst to form an ketalized hexose, treating the ketalized hexose with a second carbonyl compound followed by treating with a first reductant to form an etherized hexose, and converting the etherized hexose into a target hexose derivative, which can be 2-alcohol hexose, 3-alcohol hexose, 4-alcohol hexose, or a 6-alcohol hexose. In particular, the present invention can prepare the hexose derivatives with highly regioselective scheme to protect individual hydroxyls of monosaccharide units and install an orthogonal protecting group pattern in a one-pot manner

  制备己糖衍生物的方法包括以下步骤：提供硅烷基化的己糖，将硅烷基化的己糖与第一羰基化合物在催化剂存在下处理，形成缩酮化的己糖，将缩酮化的己糖与第二羰基化合物处理后，再用第一还原剂处理，形成醚化的己糖，并将醚化的己糖转化为目标己糖衍生物，可以是2-醇己糖、3-醇己糖、4-醇己糖或6-醇己糖。具体来说，本发明可以采用高度选择性的方案制备己糖衍生物，以保护单糖单元的各个羟基，并以一锅法安装正交保护基图案。
• Synthesis and stereochemical confirmation of the cis-fused L/M and N/O ring systems of maitotoxin
  作者：Makoto Sasaki、Taro Nonomura、Michio Murata、Kazuo Tachibana

  DOI：10.1016/s0040-4039(00)73310-7

  日期：1994.7

  Stereocontrolled synthesis of cis-fused 1,6-dioxadecalin system 1, which corresponds to the L/M and N/O rings of maitotoxin, was accomplished. Comparison of its H-1 and C-13 NMR data with those of the natural toxin established the earlier stereochemical assignments.
• Synthesis of Kojidextrins and Their Protein Conjugates. Incidence of Steric Mismatch in Oligosaccharide Synthesis
  作者：Vince Pozsgay、Eric P. Dubois、Lewis Pannell

  DOI：10.1021/jo962300y

  日期：1997.5.1

  Kojidextrins are biologically important oligosaccharides that are involved in many physiological processes including protein glycosylation and bacterial growth. As part of our project to explore the role kojidextrins may play in bacterial pathogenesis, here we report Synthetic routes to kojibiose (54), -triose (58), -tetraose (64), and -pentaose (69) equipped with alpha-linked (hydrazinocarbonyl)-pentyl aglycon, using linear and convergent strategies. In the search for a rapid convergent strategy for the construction of extended kojidextrins, four kojibiose donors (1-4) were synthesized that contain acyl- and ether-type protecting groups in various ratios. These were tested to probe the influence of diverse protecting group assemblies on their glycosyl donor ability. Attempted condensation of these donors with kojitriose and -tetraose accepters failed to give the desired products apparently because of steric mismatch between the donor and the acceptor moieties. A one-pot procedure was developed for the covalent attachment of the synthetic saccharides through their hydrazido group to human serum albumin (HSA) using Tietze's squarate method to give neoglycoproteins containing up to 28 saccharide units per HSA.