allyl 2,6-di-O-benzyl-β-D-galactopyranoside | 125790-89-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: allyl 2,6-di-O-benzyl-β-D-galactopyranoside
• 英文别名: (2R,3R,4S,5R,6R)-5-phenylmethoxy-2-(phenylmethoxymethyl)-6-prop-2-enoxyoxane-3,4-diol
• CAS: 125790-89-8
• 化学式: C₂₃H₂₈O₆
• 分子量: 400.472
• InChiKey: SAIBWTFYVQRZHJ-BMXMUORJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  29
• 可旋转键数：
  10
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.39
• 拓扑面积：
  77.4
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  allyl 2,6-di-O-benzyl-β-D-galactopyranoside 在 4 A molecular sieve 、 三氟化硼乙醚 、 三乙胺 、 9-硼双环[3.3.1]壬烷 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 168.5h， 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
• 作为产物：
  描述：

  alpha-D-半乳糖 在 盐酸 、 calcium sulfate 、 高氯酸 、 水 、 sodium methylate 、 mercury(II) cyanide 、 sodium hydride 、 mercury dibromide 作用下， 以 甲醇 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 46.25h， 生成 allyl 2,6-di-O-benzyl-β-D-galactopyranoside
  参考文献：
  名称：

  碳水化合物衍生的亚胺盐有机催化剂用于烯烃的不对称环氧化

  摘要：

  已经制备了新的基于碳水化合物的二氢异喹啉鎓盐家族，并测试了其作为非对称催化剂用于未官能化烯烃底物环氧化的潜力，在产物环氧化物中提供高达57％ee。

  DOI：

  10.1016/j.tet.2014.07.052

文献信息

• Chemical approach for the syntheses of GM4 isomers with sialic acid to non-natural linkage positions on galactose
  作者：Kenta Kurimoto、Hatsuo Yamamura、Atsushi Miyagawa

  DOI：10.1016/j.carres.2014.10.018

  日期：2015.1

  Cell-surface glycans containing sialic acid are involved in various biological phenomena. However, the syntheses of GM4 derivatives with (2 --> 2) and (2 --> 4) linkages have not been investigated to date. In this study, sialylation of all of the hydroxyl groups on galactose were investigated for the syntheses of GM4 isomers. Regioselective sialylation was achieved via protection of galactosyl acceptors

  含有唾液酸的细胞表面聚糖参与多种生物学现象。但是，迄今尚未研究具有（2-> 2）和（2-> 4）键的GM4衍生物的合成。在这项研究中，对半乳糖上所有羟基的唾液酸化进行了研究，以合成GM4异构体。通过使用富含电子的苄基基团保护半乳糖基受体来实现区域选择性的唾液酸化。这些合成的唾液酸化聚糖将被证明是研究未知碳水化合物介导的生物学角色的有用工具。
• Kornilov; Kononov; Zatonskii, Russian Journal of Bioorganic Chemistry, 1997, vol. 23, # 8, p. 597 - 607
  作者：Kornilov、Kononov、Zatonskii、Shashkov、Nifant'ev

  DOI：——

  日期：——
• An efficient approach to stereoselective glycosylation of ceramide derivatives: Use of pivaloyl group as a stereocontrolling auxiliary
  作者：Susumu Sato、Shigeki Nunomura、Takahisa Nakano、Yukishige Ito、Tomoya Ogawa

  DOI：10.1016/s0040-4039(00)80426-8

  日期：1988.1