methyl 2-deoxy-2-fluoro-α-D-glucopyranoside | 115216-40-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 2-deoxy-2-fluoro-α-D-glucopyranoside
• 英文别名: (2R,3S,4S,5R,6S)-5-fluoro-2-(hydroxymethyl)-6-methoxyoxane-3,4-diol
• CAS: 115216-40-5
• 化学式: C₇H₁₃FO₅
• 分子量: 196.176
• InChiKey: CRIUOMMBWCCBCQ-GKHCUFPYSA-N

物化性质

• 熔点：
  143-143.5 °C(Solv: ethyl ether (60-29-7))
• 沸点：
  352.7±42.0 °C(Predicted)
• 密度：
  1.40±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -1.59
• 重原子数：
  13.0
• 可旋转键数：
  2.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  79.15
• 氢给体数：
  3.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  methyl 2-deoxy-2-fluoro-α-D-glucopyranoside 在 palladium oxide on barium sulfate 吡啶 、 N-溴代丁二酰亚胺(NBS) 、 叠氮化锂 、 氢气 、 sodium methylate 、 对甲苯磺酸 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 barium carbonate 作用下， 以 甲醇 、 四氯化碳 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 乙腈 、 苯 为溶剂， 反应 26.42h， 生成 Methyl 3-amino-2,3,6-trideoxy-2-fluoro-β-L-talopyranoside
  参考文献：
  名称：

  Synthesis of 3-amino-2,3,6-trideoxy-2-fluoro-l-talose and -d-allose [(R)-2-fluoro-l-daunosamine and (R)-2-fluoro-d-ristosamine]

  摘要：

  The title compounds were synthesized (as methyl glycosides) starting from 1,3,4,6-tetra-O-acetyl-2-deoxy-2-fluoro-beta-D-glucopyranose. Stereoselective methods of glycosylation gave, via the tri-O-acetylglycopyranosyl bromide, the methyl 2-deoxy-2-fluoro-alpha- and -beta-D-glucopyranoside triacetates. Each anomer was O-deacetylated and further transformed into the corresponding, 4,6-O-benzylidenated 3-triflate, and the triflates were converted by azide displacement into the 3-azido-2,3-dideoxy-2-fluoroglycosides having the D-allo configuration. Hanesssian-Hullar reaction then furnished the corresponding 6-bromo-6-deoxy-4-benzoates, which were dehydrobrominated to give the methyl 3-azido-4-O-benzoyl-2,3,6-tri-deoxy-2-fluoro-alpha- and -beta-D-ribo-hex-5-enopyranosides. Debenzoylation of the alpha-anomer, followed by catalytic hydrogenation, led to methyl 3-amino-2,3,6-trideoxy-2-fluoro-beta-L-talopyranoside [methyl (R)-2-fluoro-beta-L-daunosaminide], whereas the same sequence applied to the beta-anomer afforded methyl 3-amino-2,3,6-trideoxy-2-fluoro-beta-D-allopyranoside [methyl (R)-2-fluoro-beta-D-ristosaminide]. The overall yields for these 10-step sequences were 11-12 and 16%, respectively. The 1H- and 13C-n.m.r. data for the new fluoro sugar derivatives are discussed with respect to the dependence of JF,H and JF,C values on molecular geometry and substituent effects.

  DOI：

  10.1016/0008-6215(90)84168-t
• 作为产物：
  描述：

  methyl 3,4,6-tri-O-acetyl-2-deoxy-2-fluoro-α-D-glucopyranoside 在 sodium methylate 作用下， 反应 1.0h， 生成 methyl 2-deoxy-2-fluoro-α-D-glucopyranoside
  参考文献：
  名称：

  Synthesis of 3-amino-2,3,6-trideoxy-2-fluoro-l-talose and -d-allose [(R)-2-fluoro-l-daunosamine and (R)-2-fluoro-d-ristosamine]

  摘要：

  The title compounds were synthesized (as methyl glycosides) starting from 1,3,4,6-tetra-O-acetyl-2-deoxy-2-fluoro-beta-D-glucopyranose. Stereoselective methods of glycosylation gave, via the tri-O-acetylglycopyranosyl bromide, the methyl 2-deoxy-2-fluoro-alpha- and -beta-D-glucopyranoside triacetates. Each anomer was O-deacetylated and further transformed into the corresponding, 4,6-O-benzylidenated 3-triflate, and the triflates were converted by azide displacement into the 3-azido-2,3-dideoxy-2-fluoroglycosides having the D-allo configuration. Hanesssian-Hullar reaction then furnished the corresponding 6-bromo-6-deoxy-4-benzoates, which were dehydrobrominated to give the methyl 3-azido-4-O-benzoyl-2,3,6-tri-deoxy-2-fluoro-alpha- and -beta-D-ribo-hex-5-enopyranosides. Debenzoylation of the alpha-anomer, followed by catalytic hydrogenation, led to methyl 3-amino-2,3,6-trideoxy-2-fluoro-beta-L-talopyranoside [methyl (R)-2-fluoro-beta-L-daunosaminide], whereas the same sequence applied to the beta-anomer afforded methyl 3-amino-2,3,6-trideoxy-2-fluoro-beta-D-allopyranoside [methyl (R)-2-fluoro-beta-D-ristosaminide]. The overall yields for these 10-step sequences were 11-12 and 16%, respectively. The 1H- and 13C-n.m.r. data for the new fluoro sugar derivatives are discussed with respect to the dependence of JF,H and JF,C values on molecular geometry and substituent effects.

  DOI：

  10.1016/0008-6215(90)84168-t

文献信息

• Synthesis and N.M.R. spectra of methyl 2-deoxy-2-fluoro- and 3-deoxy-3-fluoro-α- and β-d-glucopyranosides
  作者：Pavol Kováč、Herman J.C. Yeh、Cornelis P.J. Glaudemans

  DOI：10.1016/0008-6215(87)80239-2

  日期：1987.11

  silver perchlorate-catalyzed glycosylation showed remarkable lack of stereoselectivity for the formation of the corresponding methyl alpha-glycoside, despite the presence at C-2 of the fluorine functionality presumably not capable of neighboring-group participation. Pure methyl 2-deoxy-2-fluoro-alpha- and beta-D-glucopyranosides were obtained by fractional crystallization from the mixture formed by methanolysis

  甲基3-脱氧-3-氟-α-和β-D-吡喃葡萄糖苷以及α-和β-D-葡糖呋喃糖苷是通过3-脱氧-3-氟-1,2：5,6-di-O的甲醇分解制得的-异亚丙基-α-D-葡萄糖呋喃糖。结晶3,4,6-三-O-乙酰基-2-脱氧-2-氟-α-D-吡喃葡萄糖基氯（2）和相应的糖基溴化物（3）由1,3,4,6-四甲基制得-O-乙酰基-2-脱氧-2-氟-β-D-吡喃葡萄糖（1）。在三氟甲磺酸银和高氯酸银催化的糖基化条件下，2与甲醇的反应表明，尽管在C-2处存在氟官能团可能无法分离，但对于形成相应的甲基α-糖苷而言，明显缺乏立体选择性。邻居参与。
• BAER, HANS H.;HERNANDEZ, MATEO FERNANDO;SIEMSEN, LISA, CARBOHYDR. RES., 195,(1990) N, C. 225-245
  作者：BAER, HANS H.、HERNANDEZ, MATEO FERNANDO、SIEMSEN, LISA

  DOI：——

  日期：——