(2R,3S)-6-(2-isopropyl-5-methylcyclohexyloxy)-3-(benzyloxy)-2-(benzyloxymethyl)-3,6-dihydro-2H-pyran

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: (2R,3S)-6-(2-isopropyl-5-methylcyclohexyloxy)-3-(benzyloxy)-2-(benzyloxymethyl)-3,6-dihydro-2H-pyran
• 英文别名: (2R,3S,6S)-6-[(1R,2S,5R)-5-methyl-2-propan-2-ylcyclohexyl]oxy-3-phenylmethoxy-2-(phenylmethoxymethyl)-3,6-dihydro-2H-pyran
• 化学式: C₃₀H₄₀O₄
• 分子量: 464.645
• InChiKey: JEKOMMNKAUATCB-NALFRMBBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.6
• 重原子数：
  34
• 可旋转键数：
  10
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.53
• 拓扑面积：
  36.9
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  4,6-di-O-benzyl glucal 在 gold(III) chloride 、 四丁基碘化铵 、 sodium hydride 作用下， 以 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 18.0h， 生成 (2R,3S)-6-(2-isopropyl-5-methylcyclohexyloxy)-3-(benzyloxy)-2-(benzyloxymethyl)-3,6-dihydro-2H-pyran
  参考文献：
  名称：

  Stereoselective synthesis of α-glucosides from 3-O-propargyl protected glucal exploiting the alkynophilicity of AuCl3

  摘要：

  The stereoselective synthesis of 2,3-unsaturated alpha-D-glucosides by the S(N)2' addition of diverse aglycones onto 4,6-di-O-benzyl-3-O-propargyl glucal was achieved using a catalytic quantity of AuCl3. The Au catalyzed reaction was explored using various aliphatic, aromatic, alicyclic and monosaccharide aglycones. The current protocol tolerates diverse functional groups and is highly stereoselective, fast, catalytic and mild. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2006.01.048

文献信息

• A Facile H₂SO₄-SiO₂–Catalyzed Ferrier Rearrangement of 3,4,6-Tri-<i>O</i>-benzyl-d-glucal
  作者：Jianbo Zhang、Bo Zhang、Jiafen Zhou、Heshan Chen、Juan Li、Guofang Yang、Zhongfu Wang、Jie Tang

  DOI：10.1080/07328303.2013.809093

  日期：2013.7.24

  convenient promoter for Ferrier-type rearrangement of 3,4,6-tri-O-benzyl-d-glucal in CH2Cl2, which is a difficult donor for this type of reaction. The acceptors include primary alcohols, secondary alcohols, pentanol, halogenated alcohol, sterols, thiol, and 2-naphthol. Thus, 2,3-unsaturated glycosides were obtained rapidly (<2 h) and efficiently (>62%) in good α-selectivity (α/β>4.2:1) under mild conditions

  固定在硅胶上的硫酸（H 2 SO 4 -SiO 2）被用作CH 2 Cl 2中3,4,6-三-O-苄基-d-葡糖的费勒型重排的高效便捷的促进剂，对于这种类型的反应，这是一个困难的供体。受体包括伯醇，仲醇，戊醇，卤代醇，固醇，硫醇和2-萘酚。因此，在温和条件下以良好的α-选择性（α/β> 4.2：1）快速（<2 h）和有效（> 62％）获得了2,3-不饱和糖苷。
• Copper(<scp>ii</scp>)-catalyzed stereoselective 1,2-addition <i>vs</i>. Ferrier glycosylation of “armed” and “disarmed” glycal donors
  作者：Manoj Kumar、Thurpu Raghavender Reddy、Aakanksha Gurawa、Sudhir Kashyap

  DOI：10.1039/d0ob01042a

  日期：——

  Selective activation of “armed’ and ‘'disarmed” glycal donors enabling the stereo-controlled glycosylations by employing Cu(II)-catalyst as the promoter has been realized. The distinctive stereochemical outcome in the process is mainly influenced by the presence of diverse protecting groups on the donor and the solvent system employed. The protocol is compatible with a variety of aglycones including

  通过使用Cu（II）-催化剂作为启动子，实现了“武装”和“解除武装”的糖基供体的选择性激活，从而实现了立体控制的糖基化。在该方法中独特的立体化学结果主要受供体和所用溶剂体系上存在各种保护基的影响。该方案可与多种糖苷配基（包括碳水化合物，氨基酸和天然产物）兼容，以高α-异头异构体选择性获得脱氧糖苷和糖缀合物。值得注意的是，该方法的合成实用性已被充分验证用于包含2-脱氧成分的三糖的立体选择性组装。涉及氘代实验的机理研究验证了合成-在武装供体的双键上进行非对映体选择性的1,2-加成受体。
• 2,3-Unsaturated Allyl Glycosides as Glycosyl Donors for Selective α-Glycosylation
  作者：Brijesh Kumar、Mushtaq A. Aga、Abdul Rouf、Bhahwal A. Shah、Subhash C. Taneja

  DOI：10.1021/jo102333x

  日期：2011.5.6

  presence of NBS and a catalytic amount of a Lewis acid, 2,3-unsaturated allyl glycosides [6-(allyloxy)-3,6-dihydro-2-(hydroxymethyl)-2H-pyran-3-ol] have been successfully used as versatile glycosyl donors for the stereoselective α-glycosylation of a variety of alcohols comprising sensitive functions such as acetonide, keto, nitro, and ester in 50−90% yields. The methodology offers an equally facile alternative

  在NBS和催化量的路易斯酸存在下，2,3-不饱和烯丙基糖苷[6-（烯丙氧基）-3,6-二氢-2-（羟甲基）-2 H-吡喃-3-醇]具有已成功地用作多种糖基供体，用于多种醇的立体选择性α-糖基化反应，这些醇具有50-90％的收率，包括敏感功能，如丙酮化物，酮，硝基和酯。该方法为不饱和糖中的4-戊烯基取代提供了同样简便的替代方法。