methyl 3-amino-2,3,6-trideoxy-2-fluoro-β-D-allopyranoside | 128855-00-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 3-amino-2,3,6-trideoxy-2-fluoro-β-D-allopyranoside
• 英文别名: (2R,3S,4R,5R,6R)-4-amino-5-fluoro-6-methoxy-2-methyloxan-3-ol
• CAS: 128855-00-5
• 化学式: C₇H₁₄FNO₃
• 分子量: 179.191
• InChiKey: RXMPRRVDESQHGP-XUUWZHRGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.8
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  64.7
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  methyl 3-azido-4-O-benzoyl-2,3,6-trideoxy-2-fluoro-β-D-ribo-hex-5-enopyranoside 在 palladium oxide on barium sulfate 氢气 、 sodium methylate 作用下， 以 甲醇 为溶剂， 反应 4.0h， 生成 methyl 3-amino-2,3,6-trideoxy-2-fluoro-β-D-allopyranoside
  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

• 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：——