4-chlorophenyl 4,6-O-benzylidene-β-D-1-thioglucopyranoside | 1294446-92-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 4-chlorophenyl 4,6-O-benzylidene-β-D-1-thioglucopyranoside
• 英文别名: 4-chlorophenyl 4,6-O-benzylidene-1-thio-β-D-glucopyranoside；(2R,4aR,6S,7R,8R,8aS)-6-(4-chlorophenyl)sulfanyl-2-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxine-7,8-diol
• CAS: 1294446-92-6
• 化学式: C₁₉H₁₉ClO₅S
• 分子量: 394.876
• InChiKey: JYQGIZADYIPATL-UPGMHYFXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  26
• 可旋转键数：
  3
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.37
• 拓扑面积：
  93.4
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  4-chlorophenyl 4,6-O-benzylidene-β-D-1-thioglucopyranoside 在 硼烷 、 四丁基碘化铵 、 copper(II) bis(trifluoromethanesulfonate) 、 sodium hydride 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 为溶剂， 反应 20.0h， 生成 4-chlorophenyl β-D-1-thio-2,3,4-tri-O-benzylglucopyranoside
  参考文献：
  名称：

  硫糖苷供体的可见光促进的O-糖基化

  摘要：

  在梅本试剂和醇受体存在下，对4-对-甲氧基苯基-3-丁烯基硫代葡萄糖苷供体的可见光照射是温和的O-糖基化方法。活化不需要可见光光催化剂，不带有对甲氧基苯乙烯的烷基和芳基硫代糖苷对这些条件呈惰性。提供了反应性必需的中间电子供体-受体复合物的实验和计算证据。伯，仲和叔醇受体的产量范围从中等到高。完全的β-选择性可以通过邻群的参与来实现。

  DOI：

  10.1002/anie.201601566
• 作为产物：
  描述：

  苯甲醛二甲缩醛 、 4-chlorophenyl 1-thio-β-D-glucopyranoside 在 iron(III) chloride 作用下， 以 乙腈 为溶剂， 反应 2.5h， 以88%的产率得到4-chlorophenyl 4,6-O-benzylidene-β-D-1-thioglucopyranoside
  参考文献：
  名称：

  FeCl3 mediated arylidenation of carbohydrates

  摘要：

  Glycosides and thioglycosides based on monosaccharides in reaction with benzaldehyde dimethylacetal or p-methoxybenzaldehyde dimethyl acetal undergo FeCl3-catalyzed (20 mol %) regioselective 4,6-0-arylidenation producing the corresponding acetals in high yields. FeCl3 also mediates acetalation of glycosides and thioglycosides of cellobiose, maltose, and lactose affording the corresponding 4',6'-O-benzylidene acetals, which were isolated after their acetylation in situ with acetic anhydride and pyridine. The combined yields (two steps) of these final products are also high (61-84%). The procedure is applicable to a wide variety of functional groups including -OBn. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carres.2011.01.003

文献信息

• A Visible-Light-Promoted <i>O</i> -Glycosylation with a Thioglycoside Donor
  作者：Mark L. Spell、Kristina Deveaux、Caitlin G. Bresnahan、Bradley L. Bernard、William Sheffield、Revati Kumar、Justin R. Ragains

  DOI：10.1002/anie.201601566

  日期：2016.5.23

  Visible‐light irradiation of 4‐p‐methoxyphenyl‐3‐butenylthioglucoside donors in the presence of Umemoto's reagent and alcohol acceptors serves as a mild approach to O‐glycosylation. Visible‐light photocatalysts are not required for activation, and alkyl‐ and arylthioglycosides not bearing the p‐methoxystyrene are inert to these conditions. Experimental and computational evidence for an intervening

  在梅本试剂和醇受体存在下，对4-对-甲氧基苯基-3-丁烯基硫代葡萄糖苷供体的可见光照射是温和的O-糖基化方法。活化不需要可见光光催化剂，不带有对甲氧基苯乙烯的烷基和芳基硫代糖苷对这些条件呈惰性。提供了反应性必需的中间电子供体-受体复合物的实验和计算证据。伯，仲和叔醇受体的产量范围从中等到高。完全的β-选择性可以通过邻群的参与来实现。
• FeCl3 mediated arylidenation of carbohydrates
  作者：Nabamita Basu、Sajal K. Maity、Soumik Roy、Shuvendu Singha、Rina Ghosh

  DOI：10.1016/j.carres.2011.01.003

  日期：2011.4

  Glycosides and thioglycosides based on monosaccharides in reaction with benzaldehyde dimethylacetal or p-methoxybenzaldehyde dimethyl acetal undergo FeCl3-catalyzed (20 mol %) regioselective 4,6-0-arylidenation producing the corresponding acetals in high yields. FeCl3 also mediates acetalation of glycosides and thioglycosides of cellobiose, maltose, and lactose affording the corresponding 4',6'-O-benzylidene acetals, which were isolated after their acetylation in situ with acetic anhydride and pyridine. The combined yields (two steps) of these final products are also high (61-84%). The procedure is applicable to a wide variety of functional groups including -OBn. (C) 2011 Elsevier Ltd. All rights reserved.