2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl-(1→3)-[2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1→6)]-1,2,4-tri-O-acetyl-β-D-glucopyranose | 1462884-76-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl-(1→3)-[2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1→6)]-1,2,4-tri-O-acetyl-β-D-glucopyranose
• CAS: 1462884-76-9
• 化学式: C₅₈H₆₀O₂₅
• 分子量: 1157.1
• InChiKey: KBQFXIGDOMSNJQ-ZJTVXCKMSA-N

物化性质

• 沸点：
  1026.4±65.0 °C(predicted)
• 密度：
  1.40±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

反应信息

• 作为产物：
  描述：

  、 乙酸酐 在 吡啶 作用下， 生成 2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl-(1→3)-[2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1→6)]-1,2,4-tri-O-acetyl-α-D-glucopyranose 、 2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl-(1→3)-[2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1→6)]-1,2,4-tri-O-acetyl-β-D-glucopyranose
  参考文献：
  名称：

  Synthesis of Leonosides E and F derived from Leonurus japonicas Houtt

  摘要：

  Leonosides E and F, two natural phenylethanoid glycosides derived from Leonurus japonicas Houtt, which bear different trisaccharide moieties-one linear and one branched, were totally synthesized via a direct transglycosylation strategy. After trisaccharyl trichloroacetimidates 3 and 4 were prepared as glycosyl donors, they were coupled with the homovanillyl aglycon via silver triflate-promoted transglycosylation to successfully furnish the fully protected glycosides, which were globally deprotected to afford the target molecules in 6.77% and 10.08% overall yields for the longest linear synthetic sequence starting from 6 and 14. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carres.2013.07.012