4-methylphenyl 2,3,5-tri-O-benzyl-1-thio-L-arabinofuranoside | 1253375-92-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 4-methylphenyl 2,3,5-tri-O-benzyl-1-thio-L-arabinofuranoside
• 英文别名: p-tolyl 2,3,5-tribenzyl-1-thio-α-L-arabinofuranoside；(2S,3R,4S,5S)-2-(4-methylphenyl)sulfanyl-3,4-bis(phenylmethoxy)-5-(phenylmethoxymethyl)oxolane
• CAS: 1253375-92-6
• 化学式: C₃₃H₃₄O₄S
• 分子量: 526.697
• InChiKey: IFAXMGULODWMSU-SSNHPIBPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.8
• 重原子数：
  38
• 可旋转键数：
  12
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  62.2
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  4-methylphenyl 2,3,5-tri-O-benzyl-1-thio-L-arabinofuranoside 在 间氯过氧苯甲酸 作用下， 以 二氯甲烷 为溶剂， 以75%的产率得到p-tolyl 2,3,5-tribenzyl-1-thio-α-L-arabinofuranoside S-oxide
  参考文献：
  名称：

  Synthesis of a Dimer of β-(1,4)-l-Arabinosyl-(2S,4R)-4-hydroxyproline Inspired by Art v 1, the Major Allergen of Mugwort

  摘要：

  N alpha-tert-Butoxycarbonyl-L-trans-4-hydroxyproline allyl ester (Boc-Hyp-OAII) was glycosylated with 2,3,5-tri-O-benzyl-L-arabinose p-cresylthioglycoside in 60% yield with 4:1 beta:alpha stereoselectivity. Deprotection of N- and C-terminii independently gave a prolyl amine and prolyl carboxylate respectively that were coupled under standard conditions with 1-[bis-(dimethylamino)methylene]-1H-1,2,3-triazolo-[4,5,b]-pyridininium hexafluorophosphate 3-oxide (N-HATU) to give the dimer 1 in 46% yield. These results represent the first steps toward the production of homogeneous oligomers to determine the minimal epitope of the Art v 1 allergen.

  DOI：

  10.1021/ol102112z
• 作为产物：
  描述：

  溴甲苯 、 4'-methylphenyl 1-thio-α-L-arabinofuranoside 在 sodium hydride 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 3.0h， 以3.26 g的产率得到4-methylphenyl 2,3,5-tri-O-benzyl-1-thio-L-arabinofuranoside
  参考文献：
  名称：

  Synthesis of a Dimer of β-(1,4)-l-Arabinosyl-(2S,4R)-4-hydroxyproline Inspired by Art v 1, the Major Allergen of Mugwort

  摘要：

  N alpha-tert-Butoxycarbonyl-L-trans-4-hydroxyproline allyl ester (Boc-Hyp-OAII) was glycosylated with 2,3,5-tri-O-benzyl-L-arabinose p-cresylthioglycoside in 60% yield with 4:1 beta:alpha stereoselectivity. Deprotection of N- and C-terminii independently gave a prolyl amine and prolyl carboxylate respectively that were coupled under standard conditions with 1-[bis-(dimethylamino)methylene]-1H-1,2,3-triazolo-[4,5,b]-pyridininium hexafluorophosphate 3-oxide (N-HATU) to give the dimer 1 in 46% yield. These results represent the first steps toward the production of homogeneous oligomers to determine the minimal epitope of the Art v 1 allergen.

  DOI：

  10.1021/ol102112z

文献信息

• Surfactant-mediated thioglycosylation of 1-hydroxy sugars in water
  作者：Trichada Ratthachag、Supanat Buntasana、Tirayut Vilaivan、Panuwat Padungros

  DOI：10.1039/d0ob02246b

  日期：——

  the endocyclic bond cleavage of the thioglycosides. Herein, we report dehydrative glycosylation in water mediated by a Brønsted acid–surfactant combined catalyst (BASC). Glycosylations between 1-hydroxy furanosyl/pyranosyl sugars and primary, secondary, and tertiary aliphatic/aromatic thiols in the presence of dodecyl benzenesulfonic acid (DBSA) provided the thioglycoside products in moderate to good

  硫糖苷是一类重要的糖类，因为它们可用作非离子型生物表面活性剂，仿生糖苷和碳水化合物合成的基石。以前，已经报道了在1-羟基糖和硫醇之间的布朗斯台德酸或路易斯酸催化的脱水糖基化反应产生开链二硫缩醛糖作为主要产物，而不是所需的硫代糖苷。这些二硫缩醛糖是衍生自硫代糖苷的环内键裂解的副产物。在本文中，我们报道了由布朗斯台德酸-表面活性剂联合催化剂（BASC）介导的水中脱水糖基化。1-羟基呋喃糖基/吡喃糖基糖与伯，仲，在十二烷基苯磺酸（DBSA）存在下，叔丁基脂肪族/芳族巯基和叔硫醇提供的硫糖苷产物的产率中等至良好。微波辐照导致产率的提高和反应时间的缩短。值得注意的是，在水中DBSA介导的糖基化反应中未检测到开链二硫缩醛糖。该方法是一种简单，方便，快速的方法，无需任何无水条件即可生产硫代糖苷文库。此外，这项工作还提供了有机溶剂和水中糖基化反应的互补反应谱的一个很好的例子。该方法是一种简单，方便，快速的
• Synthesis of a Dimer of β-(1,4)-<scp>l</scp>-Arabinosyl-(2<i>S</i>,4<i>R</i>)-4-hydroxyproline Inspired by Art v 1, the Major Allergen of Mugwort
  作者：Ning Xie、Carol M. Taylor

  DOI：10.1021/ol102112z

  日期：2010.11.5

  N alpha-tert-Butoxycarbonyl-L-trans-4-hydroxyproline allyl ester (Boc-Hyp-OAII) was glycosylated with 2,3,5-tri-O-benzyl-L-arabinose p-cresylthioglycoside in 60% yield with 4:1 beta:alpha stereoselectivity. Deprotection of N- and C-terminii independently gave a prolyl amine and prolyl carboxylate respectively that were coupled under standard conditions with 1-[bis-(dimethylamino)methylene]-1H-1,2,3-triazolo-[4,5,b]-pyridininium hexafluorophosphate 3-oxide (N-HATU) to give the dimer 1 in 46% yield. These results represent the first steps toward the production of homogeneous oligomers to determine the minimal epitope of the Art v 1 allergen.