[methyl 5-acetamido-4-morpholin-4-yl-7,8,9-tri-O-acetyl-3,5-dideoxy-D-glycero-β-D-galacto-non-2-ulopyranosylonate]-(2->6)-methyl 3,4-O-isopropylidene-α-D-galactopyranoside | 1112860-47-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: [methyl 5-acetamido-4-morpholin-4-yl-7,8,9-tri-O-acetyl-3,5-dideoxy-D-glycero-β-D-galacto-non-2-ulopyranosylonate]-(2->6)-methyl 3,4-O-isopropylidene-α-D-galactopyranoside
• 英文别名: methyl (2S,4S,5R,6R)-2-[[(3aS,4R,6S,7R,7aR)-7-hydroxy-6-methoxy-2,2-dimethyl-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-4-yl]methoxy]-5-acetamido-4-morpholin-4-yl-6-[(1S,2R)-1,2,3-triacetyloxypropyl]oxane-2-carboxylate
• CAS: 1112860-47-5
• 化学式: C₃₂H₅₀N₂O₁₇
• 分子量: 734.752
• InChiKey: LSHDOTCBZHLHBK-PUWPGWKQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1.7
• 重原子数：
  51
• 可旋转键数：
  17
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.84
• 拓扑面积：
  222
• 氢给体数：
  2
• 氢受体数：
  18

反应信息

• 作为产物：
  描述：

  methyl 5-acetamido-4-(morpholin-4-yl)-7,8,9-tri-O-acetyl-3,4,5-trideoxy-D-glycero-β-D-galacto-non-2-ulopyranosidonate 、 methyl 3,4-O-isopropylidene-α-D-galactopyranoside 在 三氟甲磺酸酐 、 二苯基亚砜 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 1.0h， 以55 mg的产率得到[methyl 5-acetamido-4-morpholin-4-yl-7,8,9-tri-O-acetyl-3,5-dideoxy-D-glycero-α-D-galacto-non-2-ulopyranosylonate]-(2->6)-methyl 3,4-O-isopropylidene-α-D-galactopyranoside
  参考文献：
  名称：

  Efficient Dehydrative Sialylation of C-4-Aminated Sialyl-Hemiketal Donors with Ph₂SO/Tf₂O

  摘要：

  An efficient approach to the dehydrative sialylation of various substrates with C-4-aminated sialyl-hemiketal donors by using the reagent combination of diphenyl sulfoxide and triflic anhydride is reported. By using a C-4-hindered non-nucleophilic amine auxiliary, excellent yields and high alpha-stereoselectivities were obtained for coupling with a wide range of primary and secondary acceptors.

  DOI：

  10.1021/jo802396a