methyl 2,4,6-tri-O-acetyl-α-D-galactopyranoside | 118354-00-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 2,4,6-tri-O-acetyl-α-D-galactopyranoside
• 英文别名: Methyl-2,4,6-tri-O-acetyl-α-D-galactopyranosid
• CAS: 118354-00-0
• 化学式: C₁₃H₂₀O₉
• 分子量: 320.296
• InChiKey: LKFNEACJFKRTHV-SJHCENCUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.85
• 重原子数：
  22.0
• 可旋转键数：
  5.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.77
• 拓扑面积：
  117.59
• 氢给体数：
  1.0
• 氢受体数：
  9.0

反应信息

• 作为反应物：
  描述：

  methyl 2,4,6-tri-O-acetyl-α-D-galactopyranoside 在 吡啶 、 4-二甲氨基吡啶 、 N-羟基丁二酰亚胺 、 偶氮二异丁腈 作用下， 以 甲苯 、 苯 为溶剂， 反应 2.5h， 生成 Acetic acid (2R,3R,5R,6S)-5-acetoxy-2-acetoxymethyl-4-allyl-6-methoxy-tetrahydro-pyran-3-yl ester
  参考文献：
  名称：

  Synthesis and Partial Biological Evaluation of a Small Library of Differentially-Linked β-C-Disaccharides¹

  摘要：

  The synthesis of a small library of differentially-linked beta-C-disaccharides has been carried out through the use of a radical allylation-RCM strategy. Acids 6 were prepared by Keck allylation of a suitable carbohydrate-based radical precursor, followed by oxidative cleavage of the formed alkene. Dehydrative coupling of these acids with the known olefin alcohol 5 then gave the precursor esters 7 in excellent yield. Methylenation of the esters 7 was followed by RCM and in situ hydroboration-oxidation of the formed glycals to furnish the protected beta-C-disaccharides 10 in good overall yield. Five examples were then deprotected and screened for their efficacy as enzyme inhibitors of beta-glycosidase and against several solid-tumor cell lines for in vitro differential cytotoxicity.

  DOI：

  10.1021/jo030039x
• 作为产物：
  描述：

  ((2R,3R,4S,5R,6S)-5-acetoxy-3,4-dihydroxy-6-methoxytetrahydro-2H-pyran-2-yl)methyl acetate 在 对甲苯磺酸 、 溶剂黄146 作用下， 以 苯 为溶剂， 反应 2.17h， 生成 methyl 2,4,6-tri-O-acetyl-α-D-galactopyranoside
  参考文献：
  名称：

  Paulsen, Hans; Rutz, Volker; Brockhausen, Inka, Liebigs Annalen der Chemie, 1992, # 7, p. 747 - 758

  摘要：

  DOI：

文献信息

• Synthesis of double-chain bis-sulfone neoglycolipids of the 2″-, 3″-, 4″-, and 6″-deoxyglobotrioses
  作者：Zhang Zhiyuan、Göran Magnusson

  DOI：10.1016/0008-6215(94)84006-7

  日期：1994.9

  Me3SiCH2CH2 2''-, 3''-, 4''-, and 6''-deoxyglobotriosides. Transformation of the protected Me3SiCH2CH2 globotriosides into the corresponding trichloroacetimidates proceeded, via the hemiacetals, in 91-96% over-all yield. Glycosylation of 3-(hexadecylsulfonyl-2-[hexadecylsulfonyl)methyl]propanol with the trichloroacetimidates, followed by removal of protecting groups, gave the title neoglycolipids.

  2-（三甲基甲硅烷基）乙基（Me3SiCH2CH2）2,3,6-三-O-苯甲酰基-4-O-（2,3-二-O-苯甲酰基-6-Op-甲氧基苄基-β-D-吡喃半乳糖基-β-用不同的2-，3-，4-或6-“脱氧-D-半乳糖”衍生物将D-吡喃葡萄糖苷糖基化，得到相应的脱氧三糖。除去保护基团得到Me3SiCH2CH2 2''-，3''- ，4''-和6''-脱氧globotriosides。通过半缩醛，将保护的Me3SiCH2CH2 globotriosides转化为相应的三氯乙酰亚胺酯，总收率为91-96％。3-（十六烷基磺酰基-2- [十六烷基磺酰基]的糖基化甲基]丙醇与三氯乙亚氨酸酯，然后除去保护基，得到标题新糖脂。
• 1H- and 13C-n.m.r. spectroscopy of synthetic monosulphated methyl α-d-galactopyranosides
  作者：Raphael Ruiz Contreras、Johannis P. Kamerling、Jan Breg、Johannes F.G. Vliegenthart

  DOI：10.1016/0008-6215(88)84136-3

  日期：1988.8