(2R,3S,4S,5S,6R)-2-methyl-6-phenylsulfanyl-5-propan-2-yloxyoxane-3,4-diol | 1161782-25-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (2R,3S,4S,5S,6R)-2-methyl-6-phenylsulfanyl-5-propan-2-yloxyoxane-3,4-diol
• CAS: 1161782-25-7
• 化学式: C₁₅H₂₂O₄S
• 分子量: 298.403
• InChiKey: NRGIJDLPNCCJDG-JSFFLRCESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  20
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  84.2
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  Phenyl 2,3-O-isopropylidene-6-O-(p-toluenesulfonyl)-1-thio-α-D-mannopyranoside 在 lithium aluminium tetrahydride 、 sodium hydroxide 、 水 作用下， 以 乙醚 为溶剂， 反应 12.0h， 以63%的产率得到Phenyl 2,3-O-isopropylidene-1-thio-α-D-rhamnopyranoside
  参考文献：
  名称：

  Synthesis of orthogonally protected d-olivoside, 1,3-di-O-acetyl-4-O-benzyl-2,6-dideoxy-d-arabinopyranose, as a C-glycosyl donor

  摘要：

  1,3-Di-O-acetyl-4-O-benzyl-2,6-dideoxy-D-arabinopyranose (11) was synthesised from thiophenyl alpha-D-mannopyranoside (21) in an eight-step sequence. Tosylation of 21 and subsequent reaction with 2,2-dimethoxypropane gave tosylate 22, which upon treatment with lithium aluminium hydride furnished 6-deoxy glycoside 24 and by-product thiophenyl 6-deoxy-2-O-isopropyl-alpha-D-arabinopyranoside. The X-ray crystal structure of the latter was determined. Benzylation of the 4-hydroxyl group of 24 and Subsequent protecting group manipulation gave D-rhamnosyl bromide 29, which on treatment with zinc-copper couple gave the orthogonally protected D-rhamnal 30. Triphenylphosphine hydrogen bromide catalysed addition of acetic acid to 30 furnished the target molecule 11. The scandium(III) triflate promoted reaction of 11 and 2-naphthol gave the corresponding C-glycoside 36 in 86% yield. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2009.03.092

文献信息

• Synthesis of orthogonally protected d-olivoside, 1,3-di-O-acetyl-4-O-benzyl-2,6-dideoxy-d-arabinopyranose, as a C-glycosyl donor
  作者：Hasnah Osman、David S. Larsen、Jim Simpson

  DOI：10.1016/j.tet.2009.03.092

  日期：2009.5

  1,3-Di-O-acetyl-4-O-benzyl-2,6-dideoxy-D-arabinopyranose (11) was synthesised from thiophenyl alpha-D-mannopyranoside (21) in an eight-step sequence. Tosylation of 21 and subsequent reaction with 2,2-dimethoxypropane gave tosylate 22, which upon treatment with lithium aluminium hydride furnished 6-deoxy glycoside 24 and by-product thiophenyl 6-deoxy-2-O-isopropyl-alpha-D-arabinopyranoside. The X-ray crystal structure of the latter was determined. Benzylation of the 4-hydroxyl group of 24 and Subsequent protecting group manipulation gave D-rhamnosyl bromide 29, which on treatment with zinc-copper couple gave the orthogonally protected D-rhamnal 30. Triphenylphosphine hydrogen bromide catalysed addition of acetic acid to 30 furnished the target molecule 11. The scandium(III) triflate promoted reaction of 11 and 2-naphthol gave the corresponding C-glycoside 36 in 86% yield. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.