p-methylphenyl 2-O-chloroacetyl-3-O-p-methoxybenzyl-4-O-levulinyl-6-O-tert-butyldiphenylsilyl-1-thio-β-D-galactopyranoside | 211801-72-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: p-methylphenyl 2-O-chloroacetyl-3-O-p-methoxybenzyl-4-O-levulinyl-6-O-tert-butyldiphenylsilyl-1-thio-β-D-galactopyranoside
• 英文别名: [(2R,3S,4S,5R,6S)-2-[[tert-butyl(diphenyl)silyl]oxymethyl]-5-(2-chloroacetyl)oxy-4-[(4-methoxyphenyl)methoxy]-6-(4-methylphenyl)sulfanyloxan-3-yl] 4-oxopentanoate
• CAS: 211801-72-8
• 化学式: C₄₄H₅₁ClO₉SSi
• 分子量: 819.488
• InChiKey: MCNJKJKUONLZBU-DQHZIMMGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.41
• 重原子数：
  56
• 可旋转键数：
  20
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.39
• 拓扑面积：
  132
• 氢给体数：
  0
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  p-methylphenyl 2-O-chloroacetyl-3-O-p-methoxybenzyl-4-O-levulinyl-6-O-tert-butyldiphenylsilyl-1-thio-β-D-galactopyranoside 在 N-碘代丁二酰亚胺 、 molecular sieve 、 三氟甲磺酸三甲基硅酯 、 (dimethylthio)methylsulfonium trifluoromethanesulfonate 、 4 A molecular sieve 、 三氟乙酸 、 mercury dibromide 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 生成 methyl 6-[(2R,3R,4S,5S,6R)-4-[[(4aR,6R,7R,8S,8aS)-2-phenyl-7,8-bis(phenylmethoxy)-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-6-yl]oxy]-6-[[tert-butyl(diphenyl)silyl]oxymethyl]-3-(2-chloroacetyl)oxy-5-(4-oxopentanoyloxy)oxan-2-yl]oxyhexanoate
  参考文献：
  名称：

  Assembly of Oligosaccharide Libraries with a Designed Building Block and an Efficient Orthogonal Protection−Deprotection Strategy

  摘要：

  DOI：

  10.1021/ja9813616
• 作为产物：
  描述：

  p-methylphenyl-1-thio-β-D-galactopyranoside 在 咪唑 、 4-二甲氨基吡啶 、 四丁基碘化铵 、 二正丁基氧化锡 、 三乙胺 、 N,N'-二环己基碳二亚胺 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 生成 p-methylphenyl 2-O-chloroacetyl-3-O-p-methoxybenzyl-4-O-levulinyl-6-O-tert-butyldiphenylsilyl-1-thio-β-D-galactopyranoside
  参考文献：
  名称：

  Assembly of Oligosaccharide Libraries with a Designed Building Block and an Efficient Orthogonal Protection−Deprotection Strategy

  摘要：

  DOI：

  10.1021/ja9813616

文献信息

• Anomeric Reactivity-Based One-Pot Oligosaccharide Synthesis:  A Rapid Route to Oligosaccharide Libraries
  作者：Xin-Shan Ye、Chi-Huey Wong

  DOI：10.1021/jo991558w

  日期：2000.4.1

  tetrasaccharide in high overall yield. The approach enables the rapid assembly of 33 linear or branched fully protected oligosaccharides using designed building blocks. These fully protected oligosaccharides have been partially or completely deprotected to create 29 more structures to further increase the diversity of the library.

  寡糖文库的组装已采用“一锅法”以实用和有效的方式实现。借助巯基糖苷的异头反应性值，使用具有一个游离羟基的巯基糖苷（单糖或二糖）作为受体和供体，再结合另一种完全保护的巯基糖苷，可以选择性地形成二糖或三糖，而不会自缩合，随后原位与无异性的糖苷（单糖或二糖）反应，以高总收率形成三糖或四糖。该方法可以使用设计的构建基块快速组装33种直链或支链完全保护的寡糖。
• Programmable One-Pot Oligosaccharide Synthesis
  作者：Zhiyuan Zhang、Ian R. Ollmann、Xin-Shan Ye、Ralf Wischnat、Timor Baasov、Chi-Huey Wong

  DOI：10.1021/ja982232s

  日期：1999.2.1

  In an effort to develop a broadly applicable approach to the facile one-pot synthesis of oligosaccharides, the reactivity of a number of p-methylphenyl thioglycoside (STol) donors which are either fully protected or have one hydroxyl group exposed has been quantitatively determined by HPLC. We have characterized and quantified the influence on reactivity of the structural effects of different monosaccharide cores and different protecting groups on each glycoside donor. In addition, we have established a correlation between glycosyl donor reactivity and the chemical shift of the anomeric proton by H-1 NMR. Using the reactivity data, we have created a database of thioglycosides as glycosyl donors and demonstrated its utility in the easy and rapid one-pot assembly of various linear and branched oligosaccharide structures. In addition, we have developed the first computer program, OptiMer, for use as a database search tool and guide for the selection of building blocks for the one-pot assembly of a desired oligosaccharide or a library of individual oligosaccharides.