methyl 2-O-benzoyl-4,6-O-benzylidene-β-D-galactopyranosyl-(1->4)-O-2,3,6-tri-O-benzoyl-β-D-glucopyranoside | 108282-43-5

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: methyl 2-O-benzoyl-4,6-O-benzylidene-β-D-galactopyranosyl-(1->4)-O-2,3,6-tri-O-benzoyl-β-D-glucopyranoside
• 英文别名: methyl 2,3,6-tri-O-benzoyl-4-O-(2-O-benzoyl-4,6-O-benzylidene-β-D-galactopyranosyl)-β-D-glucopyranoside
• CAS: 108282-43-5
• 化学式: C₄₈H₄₄O₁₅
• 分子量: 860.868
• InChiKey: KHFAPPIIGINYIR-OPGOFGQBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.48
• 重原子数：
  63.0
• 可旋转键数：
  13.0
• 环数：
  8.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  180.81
• 氢给体数：
  1.0
• 氢受体数：
  15.0

反应信息

• 作为反应物：
  描述：

  methyl 2-O-benzoyl-4,6-O-benzylidene-β-D-galactopyranosyl-(1->4)-O-2,3,6-tri-O-benzoyl-β-D-glucopyranoside 在 吡啶 、 sodium hydroxide 、 potassium nitrite 、 乙酸肼 、 三乙胺 作用下， 以 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 3.0h， 生成 2-[(2S,4aR,6S,7S,8R,8aS)-6-((2R,3S,4R,5R,6R)-4,5-Dihydroxy-2-hydroxymethyl-6-methoxy-tetrahydro-pyran-3-yloxy)-7-hydroxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-ylsulfanyl]-butyric acid
  参考文献：
  名称：

  The synthesis and biological evaluation of lactose-based sialylmimetics as inhibitors of rotaviral infection

  摘要：

  Rotaviruses are the most significant cause of gastroenteritis in young children and are responsible for over 600,000 infant deaths annually. The rotaviral haemagglutinin protein (VP8*) of some strains has been implicated in early recognition and binding events of host cell-surface sialoglycoconjugates, and is therefore an attractive target for potential therapeutic intervention. Since N-acetylneuraminic acid alpha(2,3)-linked to galactose is believed to be the minimum binding epitope of rotavirus to host cells, we report here our development of an efficient and flexible synthetic route to a range of lactose-based sialylmimetics of alpha(2,3)-linked thiosialosides. These compounds were biologically evaluated as inhibitors of rotaviral infection using an in vitro neutralisation assay. The results suggest that these lactose-based sialylmimetics are not inhibitors of the rhesus rotavirus strain; however, they do exhibit modest inhibition of the human (Wa) strain, presumably through inhibition of the rotaviral adhesion process. (c) 2005 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2005.08.057
• 作为产物：
  描述：

  methyl 4,6-O-benzylidene-3-O-(chloroacetyl)-β-D-galactopyranosyl-(1->4)-O-β-D-glucopyranoside 在 吡啶 、 4-二甲氨基吡啶 、 4 A molecular sieve 、 乙酸肼 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 生成 methyl 2-O-benzoyl-4,6-O-benzylidene-β-D-galactopyranosyl-(1->4)-O-2,3,6-tri-O-benzoyl-β-D-glucopyranoside
  参考文献：
  名称：

  The synthesis and biological evaluation of lactose-based sialylmimetics as inhibitors of rotaviral infection

  摘要：

  Rotaviruses are the most significant cause of gastroenteritis in young children and are responsible for over 600,000 infant deaths annually. The rotaviral haemagglutinin protein (VP8*) of some strains has been implicated in early recognition and binding events of host cell-surface sialoglycoconjugates, and is therefore an attractive target for potential therapeutic intervention. Since N-acetylneuraminic acid alpha(2,3)-linked to galactose is believed to be the minimum binding epitope of rotavirus to host cells, we report here our development of an efficient and flexible synthetic route to a range of lactose-based sialylmimetics of alpha(2,3)-linked thiosialosides. These compounds were biologically evaluated as inhibitors of rotaviral infection using an in vitro neutralisation assay. The results suggest that these lactose-based sialylmimetics are not inhibitors of the rhesus rotavirus strain; however, they do exhibit modest inhibition of the human (Wa) strain, presumably through inhibition of the rotaviral adhesion process. (c) 2005 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2005.08.057

文献信息

• Glycosylation of lactose: synthesis of branched oligosaccharides involved in the biosynthesis of glycolipids having blood-group I activity
  作者：Aurelio Maranduba、Alain Veyriěres

  DOI：10.1016/s0008-6215(00)90333-1

  日期：1986.8

  of the triol 9, leading in each sequence to the branched tetrasaccharide, beta-D-GlcpNAc-(1----3)-[beta-D-GlcpNAc-(1----6)]-beta-D-Galp-(1----4)- beta-D-GlcOMe. Similar glycosylations performed with 3,6-di-O-acetyl-2-deoxy-2-phthalimido-4-O-(2,3,4, 6-tetra-O-acetyl-beta-D-galactopyranosyl)-beta-D-glucopyranosyl trichloroacetimidate afforded the branched hexasaccharide beta-D-Galp-(1----4)-beta-D-Glc

  制备4-O-（2-O-苯甲酰基-4,6-O-亚苄基-β-D-吡喃半乳糖基）-2,3,6-三-O-苯甲酰基-β-D-吡喃葡萄糖苷（2）从甲基β-乳糖苷四个步骤。晶体2是用于合成衍生自乳糖的支链寡糖的便利底物。首先，使用N-邻苯二甲酰氨基糖的三氯乙酰亚胺酸酯在3'-位进行高产率的糖基化，然后在除去亚苄基后在6'-位进行。因此，将3,4,6-三-O-乙酰基-2-脱氧-2-邻苯二甲酰亚胺-β-D-吡喃葡萄糖基三氯乙酰亚氨酸酯用于两个连续的糖基化反应中，同时用于三醇9的同时分解，从而导致每个序列变为支链四糖β-D-GlcpNAc-（1 ---- 3）-[β-D-GlcpNAc-（1 ---- 6）]-β-D-Galp-（1 ---- 4） -β-D-GlcOMe。用3进行相似的糖基化，
• Synthesis of a sulfonic acid mimetic of the sulfated Lewis A pentasaccharide
  作者：Zsolt Jakab、Anikó Fekete、Magdolna Csávás、Anikó Borbás、András Lipták、Sándor Antus

  DOI：10.1016/j.carres.2011.12.015

  日期：2012.3

  The first sulfonic acid mimetic of the sulfated Lewis A pentasaccharide in which the natural L-fucose unit is replaced by a D-arabinose ring was synthesized. Formation of the sulfonic acid moiety at a pentasaccharide level could be successfully achieved by means of introduction of an acetylthio moiety into the terminal D-galactose residue and subsequent oxidation. The equatorial arrangement of the acetylthio group linked to C-3 of the galactose ring could be obtained by double nucleophilic substitutions; efficient formation of the gulo-triflate derivatives required low-power microwave (MW) activation. Oxidation of the acetylthio group was carried out using Oxone in the presence of acetic acid. (C) 2012 Elsevier Ltd. All rights reserved.