2,4-O-benzylidene-5,6-O-isopropylidene-3-O-(β-D-glucopyranosyl)-D-glucitol | 794591-54-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,4-O-benzylidene-5,6-O-isopropylidene-3-O-(β-D-glucopyranosyl)-D-glucitol
• 英文别名: (2S,3R,4S,5S,6R)-2-[[(4R,5R,6S)-4-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-6-(hydroxymethyl)-2-phenyl-1,3-dioxan-5-yl]oxy]-6-(hydroxymethyl)oxane-3,4,5-triol
• CAS: 794591-54-1
• 化学式: C₂₂H₃₂O₁₁
• 分子量: 472.489
• InChiKey: STLUZSCVJYGZQB-MDOKZVTHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1.2
• 重原子数：
  33
• 可旋转键数：
  6
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.73
• 拓扑面积：
  157
• 氢给体数：
  5
• 氢受体数：
  11

反应信息

• 作为反应物：
  描述：

  2,4-O-benzylidene-5,6-O-isopropylidene-3-O-(β-D-glucopyranosyl)-D-glucitol 在 palladium on activated charcoal 水 、 氢气 、 溶剂黄146 作用下， 以 甲醇 为溶剂， 反应 15.0h， 生成 5,6-O-isopropylidene-3-O-(β-D-glucopyranosyl)-D-glucitol
  参考文献：
  名称：

  Two approaches to the synthesis of 3-β-d-glucopyranosyl-d-glucitol

  摘要：

  Glycosidation of 1,2:5,6-di-O-isopropylidene-D-glucose with tetra-O-acetyl-glucosyl bromide in 1:1 benzene-MeNO2 afforded approximately equal amounts of the 3-O-beta-D-glycoside and the rearranged 6-O-beta-D-glycoside, while in MeCN only the latter was formed. When tetra-O-acetyl-beta-thiophenylgiucoside was used as donor in CH2Cl2 in the presence of NIS/TfOH as activator, the 6-O-beta-D-glycoside and a 3-O-orthoester were formed in a 1:2 ratio at -20 degreesC, while at 20 degreesC only the former could be isolated. Glycosidation of 1-O-benzoyl-2,4-0-benzylidene-5,6-O-isopropylidene-D-glycutol with tetra-O-acetyl-glucosyl bromide in MeCN in the presence of Hg(CN)(2) afforded the corresponding 3-O-alpha- and 3-O-beta-glycopyranoside in a 1:4 ratio in MeCN and 1:5 in 1:1 benzene-MeNO2. respectively. When Hg(CN)(2)/HgBr2 was used as promoter, the corresponding orthoester was also formed. When tetra-O-acetyl-beta-thiophenylglucoside was used as donor, the 3-O-beta-anomer and the orthoester were obtained predominantly in a 3:2 ratio together with traces of the 3-O-alpha-glycoside. Both beta-glycosides could be smoothly converted into 3-beta-D-glucopyranosyl-D-glucitol (C) 2004 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carres.2004.07.019
• 作为产物：
  描述：

  (2R,3R,4S,5R,6S)-2-(acetoxymethyl)-6-(phenylthio)tetrahydro-2H-pyran-3,4,5-triyl triacetate 在 N-碘代丁二酰亚胺 、 sodium methylate 、 silver trifluoromethanesulfonate 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 2.5h， 生成 2,4-O-benzylidene-5,6-O-isopropylidene-3-O-(β-D-glucopyranosyl)-D-glucitol
  参考文献：
  名称：

  Two approaches to the synthesis of 3-β-d-glucopyranosyl-d-glucitol

  摘要：

  Glycosidation of 1,2:5,6-di-O-isopropylidene-D-glucose with tetra-O-acetyl-glucosyl bromide in 1:1 benzene-MeNO2 afforded approximately equal amounts of the 3-O-beta-D-glycoside and the rearranged 6-O-beta-D-glycoside, while in MeCN only the latter was formed. When tetra-O-acetyl-beta-thiophenylgiucoside was used as donor in CH2Cl2 in the presence of NIS/TfOH as activator, the 6-O-beta-D-glycoside and a 3-O-orthoester were formed in a 1:2 ratio at -20 degreesC, while at 20 degreesC only the former could be isolated. Glycosidation of 1-O-benzoyl-2,4-0-benzylidene-5,6-O-isopropylidene-D-glycutol with tetra-O-acetyl-glucosyl bromide in MeCN in the presence of Hg(CN)(2) afforded the corresponding 3-O-alpha- and 3-O-beta-glycopyranoside in a 1:4 ratio in MeCN and 1:5 in 1:1 benzene-MeNO2. respectively. When Hg(CN)(2)/HgBr2 was used as promoter, the corresponding orthoester was also formed. When tetra-O-acetyl-beta-thiophenylglucoside was used as donor, the 3-O-beta-anomer and the orthoester were obtained predominantly in a 3:2 ratio together with traces of the 3-O-alpha-glycoside. Both beta-glycosides could be smoothly converted into 3-beta-D-glucopyranosyl-D-glucitol (C) 2004 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carres.2004.07.019

文献信息

• [EN] POLYSULFATED GLYCOSIDES AND SALTS THEREOF<br/>[FR] GLYCOSIDES POLYSULFATES ET SELS DE CEUX-CI
  申请人：IVAX CORP

  公开号：WO2006017726A3

  公开（公告）日：2006-04-20
• POLYSULFATED GLYCOSIDES AND SALTS THEREOF
  申请人：IVAX Drug Research Institute Ltd

  公开号：EP1778709B1

  公开（公告）日：2008-05-28
• Polysulfated Glycosides And Salts Thereof
  申请人：Kuszmann Janos

  公开号：US20070281893A1

  公开（公告）日：2007-12-06

  The invention relates to polysulfated glycosides of formula (I), the pharmaceutically acceptable salts thereof, as well as the pharmaceutical compositions containing these compounds as active ingredients. Furthermore the invention provides a method of preventing, treating or alleviating the symptoms of acute and chronic inflammatory disorders of the airways of mammals—including asthma and asthma-related pathologies.
• US7902158B2
  申请人：——

  公开号：US7902158B2

  公开（公告）日：2011-03-08
• Two approaches to the synthesis of 3-β-d-glucopyranosyl-d-glucitol
  作者：János Kuszmann、Gábor Medgyes、Sándor Boros

  DOI：10.1016/j.carres.2004.07.019

  日期：2004.10

  Glycosidation of 1,2:5,6-di-O-isopropylidene-D-glucose with tetra-O-acetyl-glucosyl bromide in 1:1 benzene-MeNO2 afforded approximately equal amounts of the 3-O-beta-D-glycoside and the rearranged 6-O-beta-D-glycoside, while in MeCN only the latter was formed. When tetra-O-acetyl-beta-thiophenylgiucoside was used as donor in CH2Cl2 in the presence of NIS/TfOH as activator, the 6-O-beta-D-glycoside and a 3-O-orthoester were formed in a 1:2 ratio at -20 degreesC, while at 20 degreesC only the former could be isolated. Glycosidation of 1-O-benzoyl-2,4-0-benzylidene-5,6-O-isopropylidene-D-glycutol with tetra-O-acetyl-glucosyl bromide in MeCN in the presence of Hg(CN)(2) afforded the corresponding 3-O-alpha- and 3-O-beta-glycopyranoside in a 1:4 ratio in MeCN and 1:5 in 1:1 benzene-MeNO2. respectively. When Hg(CN)(2)/HgBr2 was used as promoter, the corresponding orthoester was also formed. When tetra-O-acetyl-beta-thiophenylglucoside was used as donor, the 3-O-beta-anomer and the orthoester were obtained predominantly in a 3:2 ratio together with traces of the 3-O-alpha-glycoside. Both beta-glycosides could be smoothly converted into 3-beta-D-glucopyranosyl-D-glucitol (C) 2004 Elsevier Ltd. All rights reserved.