N-((2S,3R,4R,5S,6R)-2-Ethylsulfanyl-5-hydroxy-4-triisopropylsilanyloxy-6-triisopropylsilanyloxymethyl-tetrahydro-pyran-3-yl)-benzenesulfonamide | 201053-43-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: N-((2S,3R,4R,5S,6R)-2-Ethylsulfanyl-5-hydroxy-4-triisopropylsilanyloxy-6-triisopropylsilanyloxymethyl-tetrahydro-pyran-3-yl)-benzenesulfonamide
• CAS: 201053-43-2
• 化学式: C₃₂H₆₁NO₆S₂Si₂
• 分子量: 676.142
• InChiKey: MJHNXKRIMSBTMN-VJLURNNQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.93
• 重原子数：
  43.0
• 可旋转键数：
  16.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.81
• 拓扑面积：
  94.09
• 氢给体数：
  2.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  N-((2S,3R,4R,5S,6R)-2-Ethylsulfanyl-5-hydroxy-4-triisopropylsilanyloxy-6-triisopropylsilanyloxymethyl-tetrahydro-pyran-3-yl)-benzenesulfonamide 在 四丁基氟化铵 、 氨 、 sodium 、 二甲基二环氧乙烷 、 三氟甲烷磺酸甲酯 作用下， 以 四氢呋喃 、 乙醚 、 二氯甲烷 为溶剂， 反应 8.25h， 生成
  参考文献：
  名称：

  Synthesis of Asialo GM₁. New Insights in the Application of Sulfonamidoglycosylation in Oligosaccharide Assembly:  Subtle Proximity Effects in the Stereochemical Governance of Glycosidation

  摘要：

  The total synthesis of asialo GM(1) (1a) has been accomplished, Using related chemistry, the methyl glycoside of the asialo compound (1b) has also been synthesized. These kinds of compounds have been identified as potential ligands for bacterial and viral infection sites, A simpler structure, which hits also been identified for its infection attracting structure in the context of glycopeptides and glycolipids (methyl glycoside 2), has also been synthesized. The key common phase in the syntheses involves the sulfonamidoglycosidation reaction which is used to create a beta-linkage leading to a galNAc residue joined to the C-4 hydroxyl group of a galactose unit either as a monosaccharide (see compound 2) or as C-4' in the contest of a lactosyl moiety, During the course of these studies there was encountered an unusual "proximal hydroxyl" directing effect. Thus, when C-4 on the galactose ring of an azaglycosylating donor bears a free hydroxyl (see, for instance, compound 13), beta-glycoside formation predominates. When this hydroxyl group is blocked, the process tends in the direction of alpha-glycoside formation (see compound 32), These findings were explained as arising from a critical intramolecular hydrogen bond between the C-4 axial hydroxyl of the galactose donor and its proximal pyranosidal ring oxygen. This interaction stabilizes conformations from which beta-glycosidation predominates.

  DOI：

  10.1021/ja9724957
• 作为产物：
  描述：

  2,6-脱水-5-脱氧-1,4-二-O-(三异丙基硅烷基)-D-阿拉伯糖-己-5-烯糖 在 吡啶 、 4-二甲氨基吡啶 、 lithium aluminium tetrahydride 、 iodonium(di-γ-collidine) perchlorate 、 lithium hexamethyldisilazane 作用下， 以 乙醚 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 生成 N-((2S,3R,4R,5S,6R)-2-Ethylsulfanyl-5-hydroxy-4-triisopropylsilanyloxy-6-triisopropylsilanyloxymethyl-tetrahydro-pyran-3-yl)-benzenesulfonamide
  参考文献：
  名称：

  Synthesis of Asialo GM₁. New Insights in the Application of Sulfonamidoglycosylation in Oligosaccharide Assembly:  Subtle Proximity Effects in the Stereochemical Governance of Glycosidation

  摘要：

  The total synthesis of asialo GM(1) (1a) has been accomplished, Using related chemistry, the methyl glycoside of the asialo compound (1b) has also been synthesized. These kinds of compounds have been identified as potential ligands for bacterial and viral infection sites, A simpler structure, which hits also been identified for its infection attracting structure in the context of glycopeptides and glycolipids (methyl glycoside 2), has also been synthesized. The key common phase in the syntheses involves the sulfonamidoglycosidation reaction which is used to create a beta-linkage leading to a galNAc residue joined to the C-4 hydroxyl group of a galactose unit either as a monosaccharide (see compound 2) or as C-4' in the contest of a lactosyl moiety, During the course of these studies there was encountered an unusual "proximal hydroxyl" directing effect. Thus, when C-4 on the galactose ring of an azaglycosylating donor bears a free hydroxyl (see, for instance, compound 13), beta-glycoside formation predominates. When this hydroxyl group is blocked, the process tends in the direction of alpha-glycoside formation (see compound 32), These findings were explained as arising from a critical intramolecular hydrogen bond between the C-4 axial hydroxyl of the galactose donor and its proximal pyranosidal ring oxygen. This interaction stabilizes conformations from which beta-glycosidation predominates.

  DOI：

  10.1021/ja9724957

文献信息

• Organic synthesis in pursuit of immunology: Large-scale synthesis of peracetylated GM2 glycosylamino acid for preparation of a multiantigenic prostate cancer vaccine
  作者：Young Shin Cho、Qian Wan、Samuel J. Danishefsky

  DOI：10.1016/j.bmc.2005.06.018

  日期：2005.9

  We describe herein the stereo-controlled, large-scale synthesis of peracetylated GM2 glycosylamino acid. Key features of the synthesis include a newly modified [1+3] coupling reaction and an olefin cross-metathesis-hydrogenation sequence. The GM2 glycosylamino acid is now ready for incorporation into a hexavalent prostate cancer vaccine construct.

  我们在本文中描述了过乙酰化GM2糖基氨基酸的立体控制的大规模合成。合成的关键特征包括新修饰的[1 + 3]偶联反应和烯烃交叉复分解-氢化序列。现在已准备好将GM2糖基氨基酸掺入六价前列腺癌疫苗构建物中。