(3-tosyloxy)propyl 2,6-di-O-benzyl-3-O-(2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl)-β-D-galactopyranoside | 282089-20-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (3-tosyloxy)propyl 2,6-di-O-benzyl-3-O-(2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl)-β-D-galactopyranoside
• 英文别名: 3-[(2R,3R,4S,5S,6R)-5-hydroxy-3-phenylmethoxy-6-(phenylmethoxymethyl)-4-[(2R,3R,4S,5S,6R)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]oxyoxan-2-yl]oxypropyl 4-methylbenzenesulfonate
• CAS: 282089-20-7
• 化学式: C₆₄H₇₀O₁₄S
• 分子量: 1095.32
• InChiKey: CTPJJNUQZAMBTA-FFKNIZBXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  9.1
• 重原子数：
  79
• 可旋转键数：
  29
• 环数：
  9.0
• sp3杂化的碳原子比例：
  0.34
• 拓扑面积：
  164
• 氢给体数：
  1
• 氢受体数：
  14

反应信息

• 作为反应物：
  描述：

  (3-tosyloxy)propyl 2,6-di-O-benzyl-3-O-(2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl)-β-D-galactopyranoside 在 palladium on activated charcoal sodium azide 、 氢气 作用下， 以 乙醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 20.0 ℃ 、202.65 kPa 条件下， 反应 40.0h， 生成 (3-amido)propyl 3-O-(α-D-galactopyranosyl)-β-D-galactopyranoside
  参考文献：
  名称：

  A novel synthesis of α-d-Galp-(1→3)-β-d-Galp-1-O-(CH2)3NH2, its linkage to activated matrices and absorption of anti-αGal xenoantibodies by affinity columns

  摘要：

  Pig organs transplanted into primates are rapidly rejected because of the interaction between Ga1 alpha(1-->3)Ga1 epitopes carried by the graft and natural antibodies (anti-alpha Ga1 antibodies) present in the blood of the recipient. This report describes a simplified synthesis of the xenogeneic disaccharide and its linkage to activated gel matrices. The digalactosides alpha-D-Ga1p-(1-->3)-alpha,beta-D-Ga1p-OAll were synthesized by the condensation of the trichloroacetimidoyl 2,3,4,6-tetra-O-benzyl-beta-D-galactopyranoside donor with the 3,4-unprotected allyl 2,6-di-O-benzyl-alpha- or beta-D-galactopyranoside acceptor precursor. Deallylation and hydrogenolysis led to the free digalactoside, whereas hydrogenolysis alone resulted in the 1-O-propyl digalactoside. Both products were tested by inhibition ELISA of natural anti-Ga1 alpha(1-->3)Ga1 antibodies. The alpha-D-Ga1p-(1-->3)-beta-D-Ga1p-OPr was found to be the best inhibitor. Thus, the allyl group of the partially benzylated alpha-D-Ga1p-(1-->3)-beta-D-Ga1p-OAll was engineered, via the hydroxy-, the tosyloxy- and the azidopropyl intermediates, into an aminopropyl group amenable to binding to N-hydroxysuccinimide-activated agarose gel matrices in order to obtain specific immunoabsorption columns. Columns made of gel substituted with 5 mu mol of disaccharide per milliliter were found efficient for the immunoabsorption of anti-alpha Ga1 antibodies from human plasma. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(00)00010-0
• 作为产物：
  描述：

  allyl β-D-galactopyranoside 在 盐酸 、 氢氧化钾 、 4 A molecular sieve 、 硫酸 、 三氟化硼乙醚 、 四正辛基溴化铵 、 三乙胺 、 9-硼双环[3.3.1]壬烷 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 258.5h， 生成 (3-tosyloxy)propyl 2,6-di-O-benzyl-3-O-(2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl)-β-D-galactopyranoside
  参考文献：
  名称：

  A novel synthesis of α-d-Galp-(1→3)-β-d-Galp-1-O-(CH2)3NH2, its linkage to activated matrices and absorption of anti-αGal xenoantibodies by affinity columns

  摘要：

  Pig organs transplanted into primates are rapidly rejected because of the interaction between Ga1 alpha(1-->3)Ga1 epitopes carried by the graft and natural antibodies (anti-alpha Ga1 antibodies) present in the blood of the recipient. This report describes a simplified synthesis of the xenogeneic disaccharide and its linkage to activated gel matrices. The digalactosides alpha-D-Ga1p-(1-->3)-alpha,beta-D-Ga1p-OAll were synthesized by the condensation of the trichloroacetimidoyl 2,3,4,6-tetra-O-benzyl-beta-D-galactopyranoside donor with the 3,4-unprotected allyl 2,6-di-O-benzyl-alpha- or beta-D-galactopyranoside acceptor precursor. Deallylation and hydrogenolysis led to the free digalactoside, whereas hydrogenolysis alone resulted in the 1-O-propyl digalactoside. Both products were tested by inhibition ELISA of natural anti-Ga1 alpha(1-->3)Ga1 antibodies. The alpha-D-Ga1p-(1-->3)-beta-D-Ga1p-OPr was found to be the best inhibitor. Thus, the allyl group of the partially benzylated alpha-D-Ga1p-(1-->3)-beta-D-Ga1p-OAll was engineered, via the hydroxy-, the tosyloxy- and the azidopropyl intermediates, into an aminopropyl group amenable to binding to N-hydroxysuccinimide-activated agarose gel matrices in order to obtain specific immunoabsorption columns. Columns made of gel substituted with 5 mu mol of disaccharide per milliliter were found efficient for the immunoabsorption of anti-alpha Ga1 antibodies from human plasma. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(00)00010-0