benzyl 3,5-O-(tetraisopropylsiloxane-1,3-diyl)-2-O-triisopropylsilyl-β-D-arabinofuranosyl-(1->2)-3,5-O-dibenzyl-α-D-arabinofuranoside

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: benzyl 3,5-O-(tetraisopropylsiloxane-1,3-diyl)-2-O-triisopropylsilyl-β-D-arabinofuranosyl-(1->2)-3,5-O-dibenzyl-α-D-arabinofuranoside
• 英文别名: [(6aR,8S,9S,9aR)-8-[(2S,3S,4R,5R)-2,4-bis(phenylmethoxy)-5-(phenylmethoxymethyl)oxolan-3-yl]oxy-2,2,4,4-tetra(propan-2-yl)-6a,8,9,9a-tetrahydro-6H-furo[3,2-f][1,3,5,2,4]trioxadisilocin-9-yl]oxy-tri(propan-2-yl)silane
• 化学式: C₅₂H₈₂O₁₀Si₃
• 分子量: 951.474
• InChiKey: AHKRCUMNQFLHRP-RKAIZQMMSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  12.36
• 重原子数：
  65
• 可旋转键数：
  21
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.65
• 拓扑面积：
  92.3
• 氢给体数：
  0
• 氢受体数：
  10

反应信息

• 作为产物：
  描述：

  benzyl 2-O-acetyl-3,5-di-O-benzyl-α-D-arabinofuranoside 在 N-碘代丁二酰亚胺 、 3 A molecular sieve 、 sodium methylate 、 silver trifluoromethanesulfonate 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 4.0h， 生成 benzyl 3,5-O-(tetraisopropylsiloxane-1,3-diyl)-2-O-triisopropylsilyl-β-D-arabinofuranosyl-(1->2)-3,5-O-dibenzyl-α-D-arabinofuranoside
  参考文献：
  名称：

  Stereoselective Synthesis of a Fragment of Mycobacterial Arabinan

  摘要：

  Strategies for the stereoselective synthesis of mycobacterial arabinan were explored. Arabinofuranosyl donors with various protective groups were screened in terms of suitability for beta-( 1,2- cis)- selective glycosylation. The protective group was found to affect the stereoselectivity of arabinofuranosylation. beta-Selectivity was drastically enhanced by using donors protected with 3,5- TIDPS, possibly due to conformational constraints on the furanose ring. Synthesis of heptaarabinofuranoside was then performed to demonstrate the practicality of this methodology.

  DOI：

  10.1021/ol062198j