phenyl 4,6-O-benzylidene-1-thio-β-D-glucopyranoside

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: phenyl 4,6-O-benzylidene-1-thio-β-D-glucopyranoside
• 英文别名: (2S,4aR,6S,7R,8R,8aS)-2-phenyl-6-phenylsulfanyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxine-7,8-diol
• 化学式: C₁₉H₂₀O₅S
• 分子量: 360.431
• InChiKey: BDNIQCYVYFGHSI-QMROVXIMSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  25
• 可旋转键数：
  3
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.37
• 拓扑面积：
  93.4
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  phenyl 4,6-O-benzylidene-1-thio-β-D-glucopyranoside 在 盐酸 、 4 A molecular sieve 、 sodium hydride 、 sodium cyanoborohydride 作用下， 以 四氢呋喃 、 乙醚 、 N,N-二甲基甲酰胺 为溶剂， 反应 0.33h， 生成 (2R,3R,4S,5R,6S)-4,5-Bis-benzyloxy-2-benzyloxymethyl-6-phenylsulfanyl-tetrahydro-pyran-3-ol
  参考文献：
  名称：

  The synthesis of deoxy-α-Gal epitope derivatives for the evaluation of an anti-α-Gal antibody binding

  摘要：

  alpha-Gal epitopes (also termed as alpha-Gal) are carbohydrate structures bearing the alpha-D-Gal-(1 --> 3)-beta-D-Gal terminus 1 and are known to be the antigen responsible for antibody-mediated hyperacute rejection in xenotransplantation. Terminal 2-, 3-, 4-, and 6-deoxy-Gal derivatives of alpha-Gal were synthesized. Inhibition ELISA using mouse laminin was established to determine the binding affinity of the synthesized alpha-Gal derivatives. 4-Deoxy-alpha-Gal derivative 7 showed a significant reduction in antibody recognition. The IC50 value was 15-fold poorer than the standard alpha-Gal epitopes alpha-D-Gal-(1 --> 3)-beta-D-Gal-(1 --> 4)-beta-D-Glc-NHAc (39) and alpha-D-Gal-(1 --> 3)-beta-D-Gal-(1 -- 4)-beta-D-Glc-OBn (40). A similar observation was seen with 2-deoxy-alpha-Gal derivative 5, whose IC50 value was nearly tenfold higher than the standards. Interestingly, substitution at the terminal 3-position resulted in only a fourfold decrease in antibody recognition, suggesting a possible point of future derivation. Finally, 6-deoxy-alpha-Gal derivative 8 exhibited similar antibody recognition to both alpha-Gal epitope 39 and alpha-Gal epitope 40. This strongly suggests that derivatization at the 6-position can be accomplished without loss of antibody recognition. These findings can be utilized for the future design of other alpha-Gal derivatives. (C) 2002 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(02)00159-3
• 作为产物：
  描述：

  苯甲醛二甲缩醛 、 (2R,3R,4S,5R,6S)-2-(acetoxymethyl)-6-(phenylthio)tetrahydro-2H-pyran-3,4,5-triyl triacetate 在 sodium methylate 、 对甲苯磺酸 作用下， 以 甲醇 、 乙腈 为溶剂， 反应 20.0h， 以86%的产率得到phenyl 4,6-O-benzylidene-1-thio-β-D-glucopyranoside
  参考文献：
  名称：

  The synthesis of deoxy-α-Gal epitope derivatives for the evaluation of an anti-α-Gal antibody binding

  摘要：

  alpha-Gal epitopes (also termed as alpha-Gal) are carbohydrate structures bearing the alpha-D-Gal-(1 --> 3)-beta-D-Gal terminus 1 and are known to be the antigen responsible for antibody-mediated hyperacute rejection in xenotransplantation. Terminal 2-, 3-, 4-, and 6-deoxy-Gal derivatives of alpha-Gal were synthesized. Inhibition ELISA using mouse laminin was established to determine the binding affinity of the synthesized alpha-Gal derivatives. 4-Deoxy-alpha-Gal derivative 7 showed a significant reduction in antibody recognition. The IC50 value was 15-fold poorer than the standard alpha-Gal epitopes alpha-D-Gal-(1 --> 3)-beta-D-Gal-(1 --> 4)-beta-D-Glc-NHAc (39) and alpha-D-Gal-(1 --> 3)-beta-D-Gal-(1 -- 4)-beta-D-Glc-OBn (40). A similar observation was seen with 2-deoxy-alpha-Gal derivative 5, whose IC50 value was nearly tenfold higher than the standards. Interestingly, substitution at the terminal 3-position resulted in only a fourfold decrease in antibody recognition, suggesting a possible point of future derivation. Finally, 6-deoxy-alpha-Gal derivative 8 exhibited similar antibody recognition to both alpha-Gal epitope 39 and alpha-Gal epitope 40. This strongly suggests that derivatization at the 6-position can be accomplished without loss of antibody recognition. These findings can be utilized for the future design of other alpha-Gal derivatives. (C) 2002 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(02)00159-3