2,3,4,6-tetra-O-benzyl-1C-methyl-α-D-mannopyranose | 352020-73-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,3,4,6-tetra-O-benzyl-1C-methyl-α-D-mannopyranose
• 英文别名: 2,3,4,6-tetra-O-benzyl-1-methyl-α-D-mannopyranose；3,4,5,7-tetra-O-benzyl-1-deoxy-α-D-mannopyranose；(2S,3S,4S,5R,6R)-3,4,5-tris(benzyloxy)-6-((benzyloxy)methyl)-2-methyltetrahydro-2H-pyran-2-ol；(2S,3S,4S,5R,6R)-2-methyl-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-ol
• CAS: 352020-73-6
• 化学式: C₃₅H₃₈O₆
• 分子量: 554.683
• InChiKey: SYOICKCXPGKAOU-VABIIVNOSA-N

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：
  0.31
• 拓扑面积：
  66.4
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  2,3,4,6-tetra-O-benzyl-1C-methyl-α-D-mannopyranose 在 palladium dihydroxide 吡啶 、 三氟甲磺酸三甲基硅酯 、 4 A molecular sieve 、 氢气 、 四氯化锡 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 1.0h， 生成 methyl O-(2',3',4',6'-tetra-O-acetyl-1'-C-methyl-α-D-mannopyranosyl)-(1'->6)-2,3,4-tri-O-acetyl-α-D-glucoside
  参考文献：
  名称：

  A facile synthesis of 1′-C-alkyl-α-disaccharides from 1-C-alkyl-hexopyranoses and methyl 1-C-methyl-hexopyranosides

  摘要：

  Direct O-glycosidations using the 1-C-alkyl-2,3,4,6-tetra-O-benzyl-hexopyranoses as the glycosyl donors were carried out with a catalytic amount (0.2 equiv.) of trimethylsilyl trifluoromethanesulfonate (TMSOTf). The glycosidations proceeded alpha -stereoselectively and furnished the corresponding 1'-C-alkyl-alpha -disaccharides in 71-90% yields. The O-transglycosidations from the benzylated and acetylated methyl I-C-methyl-or-hexopyranosides to the corresponding 1'-C-methyl-alpha -O-disaccharides were also examined, respectively. These transglycosidations took place on alpha -stereoselectivity and provided the 1'-C-methyl-alpha -O-disaccharides as the sole products, implying that no neighboring group participation occured in the reactions. (C) 2001 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(01)00321-0
• 作为产物：
  描述：

  甲基氯化镁 、 2,3,4,6-tetra-O-benzyl-D-mannono-1,5-lactone 以 四氢呋喃 为溶剂， 反应 2.0h， 以86%的产率得到2,3,4,6-tetra-O-benzyl-1C-methyl-α-D-mannopyranose
  参考文献：
  名称：

  立体化学在外糖的合成和反应中。

  摘要：

  探索了两种一般方法来立体选择性合成外糖。一种方法利用亲核加成葡萄糖，半乳糖和甘露糖型的完全保护的糖内酯，随后进行脱水，以得到具有（Z）构型的期望的外糖。另一种方法以立体选择性方式进行C-糖苷的硒化。随后的亚硒酸盐消除也提供了（Z）-外糖。制备的葡萄糖型或甘露型的外糖共轭酯与烯丙醇反应，仅得到α-异头物。

  DOI：

  10.1021/jo0255227

文献信息

• An Efficient Synthesis of β-<i>C</i>-Glycosides Based on the Conformational Restriction Strategy:  Lewis Acid Promoted Silane Reduction of the Anomeric Position with Complete Stereoselectivity
  作者：Masaru Terauchi、Hiroshi Abe、Akira Matsuda、Satoshi Shuto

  DOI：10.1021/ol048525+

  日期：2004.10.1

  [reaction: see text] The reduction of glyconolactols having an anomeric carbon substituent by Et(3)SiH/TMSOTf proceeded with complete stereoselectivity to produce the corresponding beta-C-glycosides when the substrates were conformationally restricted in the (4)C(1)-chair form by a 3,4-O-cyclic diketal or a 4,6-O-benzylidene protecting group. Thus, the efficient construction of beta-C-glycosides was

  [反应：参见正文]当底物在（4）C（1）中构象受限时，通过Et（3）SiH / TMSOTf还原具有异头碳取代基的糖基内酯完全立体选择性生成相应的β-C-糖苷。 ）-椅子形式由3,4-O-环双缩酮或4,6-O-亚苄基保护基组成。因此，在构象限制策略的基础上实现了β-C-糖苷的有效构建。
• Development of Ketoside-Type Analogues of Trehalose by Using α-Stereoselective O-Glycosidation of Ketose
  作者：Rie Namme、Takashi Mitsugi、Hideyo Takahashi、Shiro Ikegami

  DOI：10.1002/ejoc.200700145

  日期：2007.8

  The stereoselective synthesis of ketoside-type analogues of trehalose is described. O-Glycosidation of hept-2-ulopyranose with trimethylsilyl α-pyranoside promoted by trimethylsilyl trifluoromethanesulfonate afforded α-ketopyranosyl α-aldopyranosides exclusively. α-Ketopyranosyl β-aldooyranosides and α-ketopyranosyl α-ketopyranosides were also synthesized in a similar manner. The benzyl protecting

  描述了海藻糖酮苷类类似物的立体选择性合成。在三氟甲磺酸三甲基甲硅烷基酯的促进下，hept-2-ulopyranose 与三甲基甲硅烷基 α-吡喃糖苷的 O-糖苷化仅提供 α-吡喃酮基 α-吡喃醛糖苷。α-吡喃酮基β-醛糖苷和α-吡喃酮基α-吡喃酮苷也以类似的方式合成。通过氢解去除羟基部分的苄基保护基团，得到完全脱保护的海藻糖类似物。 (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
• US2014/274930
  申请人：——

  公开号：——

  公开（公告）日：——
• US20140274930A1
  申请人：——

  公开号：——

  公开（公告）日：——
• MANNOSE DERIVATIVES FOR TREATING BACTERIAL INFECTIONS
  申请人：Vertex Pharmaceuticals Incorporated

  公开号：EP2970353A2

  公开（公告）日：2016-01-20