4-methoxyphenyl (2,3,4-tri-O-acetyl-6-O-benzyl-β-D-galactopyranosyl)-(1->4)-<2,3,4-tri-O-benzyl-α-L-fucopyranosyl>-(1->3)-(2-acetamido-2-deoxy-β-D-glucopyranoside) | 219489-03-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 4-methoxyphenyl (2,3,4-tri-O-acetyl-6-O-benzyl-β-D-galactopyranosyl)-(1->4)-<2,3,4-tri-O-benzyl-α-L-fucopyranosyl>-(1->3)-(2-acetamido-2-deoxy-β-D-glucopyranoside)
• 英文别名: Bn(-2)[Bn(-3)][Bn(-4)]Fuc(a1-3)[Bn(-6)Gal2Ac3Ac4Ac(b1-4)][Bn(-6)]GlcNAc(b)-O-Ph(4-OMe)；[(2R,3S,4S,5R,6S)-6-[(2R,3S,4R,5R,6S)-5-acetamido-6-(4-methoxyphenoxy)-4-[(2S,3S,4R,5R,6S)-6-methyl-3,4,5-tris(phenylmethoxy)oxan-2-yl]oxy-2-(phenylmethoxymethyl)oxan-3-yl]oxy-4,5-diacetyloxy-2-(phenylmethoxymethyl)oxan-3-yl] acetate
• CAS: 219489-03-9
• 化学式: C₆₈H₇₇NO₁₉
• 分子量: 1212.35
• InChiKey: HDWVQJROJJVVOF-DXJLAZCUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.8
• 重原子数：
  88
• 可旋转键数：
  31
• 环数：
  9.0
• sp3杂化的碳原子比例：
  0.41
• 拓扑面积：
  219
• 氢给体数：
  1
• 氢受体数：
  19

反应信息

• 作为反应物：
  描述：

  4-methoxyphenyl (2,3,4-tri-O-acetyl-6-O-benzyl-β-D-galactopyranosyl)-(1->4)-<2,3,4-tri-O-benzyl-α-L-fucopyranosyl>-(1->3)-(2-acetamido-2-deoxy-β-D-glucopyranoside) 在 palladium on activated charcoal 氢气 作用下， 以 溶剂黄146 为溶剂， 反应 4.0h， 生成
  参考文献：
  名称：

  A High Yielding Chemical Synthesis of Sialyl Lewis x Tetrasaccharide and Lewis x Trisaccharide; Examples of Regio- and Stereodifferentiated Glycosylations

  摘要：

  Virtually complete regioselective galactosylation of the diol acceptor p-methoxyphenyl 6-O-benzyl-2-deoxy-2-tetrachlorophthalimido-beta-n-glucopyranoside (8) with the donor phenyl 2,3,4-tri-O-acetyl-6-O-benzyl-1-thio-beta-D-galactopyranoside (11) gave the lactosamine derivative 14, which was fucosylated with the donor 15 to give the Le(x) trisaccharide glycoside 2 after deprotection. Regioselective sialylation of the partially protected Le(x) trisaccharide triol 24 with the sialyl donor 25 gave, after deprotection, the SLe(x) tetrasaccharide glycoside 1. The overall yields of 2 and 1 from the monosaccharide starting materials 8, 11, 15, and 25 were 56% and 29%, respectively. In contrast to the virtually complete regio- and stereoselective galactosylation of 8, fucosylation with the benzyl-protected donor 15 gave the corresponding 1-->3- and 1-->4-linked disaccharides in a ratio of 3.6:1 (highly stereo- but not regioselective glycosylation), whereas fucosylation with acetyl-protected donor 18 gave a 2.2:1 beta/alpha-mixture of 4-O-linked disaccharides (highly regio- but not stereoselective glycosylation).

  DOI：

  10.1021/jo981203x
• 作为产物：
  描述：

  4-methoxyphenyl 2-deoxy-2-(tetrachlorophthalimido)-β-D-glucopyranoside 在 盐酸 、 甲磺酰溴 、 3 Angstroems MS 、 silver trifluoromethanesulfonate 、 sodium cyanoborohydride 、 对甲苯磺酸 、 乙二胺 作用下， 以 甲醇 、 乙醇 、 水 、 乙腈 为溶剂， 反应 13.08h， 生成 4-methoxyphenyl (2,3,4-tri-O-acetyl-6-O-benzyl-β-D-galactopyranosyl)-(1->4)-<2,3,4-tri-O-benzyl-α-L-fucopyranosyl>-(1->3)-(2-acetamido-2-deoxy-β-D-glucopyranoside)
  参考文献：
  名称：

  A High Yielding Chemical Synthesis of Sialyl Lewis x Tetrasaccharide and Lewis x Trisaccharide; Examples of Regio- and Stereodifferentiated Glycosylations

  摘要：

  Virtually complete regioselective galactosylation of the diol acceptor p-methoxyphenyl 6-O-benzyl-2-deoxy-2-tetrachlorophthalimido-beta-n-glucopyranoside (8) with the donor phenyl 2,3,4-tri-O-acetyl-6-O-benzyl-1-thio-beta-D-galactopyranoside (11) gave the lactosamine derivative 14, which was fucosylated with the donor 15 to give the Le(x) trisaccharide glycoside 2 after deprotection. Regioselective sialylation of the partially protected Le(x) trisaccharide triol 24 with the sialyl donor 25 gave, after deprotection, the SLe(x) tetrasaccharide glycoside 1. The overall yields of 2 and 1 from the monosaccharide starting materials 8, 11, 15, and 25 were 56% and 29%, respectively. In contrast to the virtually complete regio- and stereoselective galactosylation of 8, fucosylation with the benzyl-protected donor 15 gave the corresponding 1-->3- and 1-->4-linked disaccharides in a ratio of 3.6:1 (highly stereo- but not regioselective glycosylation), whereas fucosylation with acetyl-protected donor 18 gave a 2.2:1 beta/alpha-mixture of 4-O-linked disaccharides (highly regio- but not stereoselective glycosylation).

  DOI：

  10.1021/jo981203x