(3aR,4R,6S,7aR)-6-butoxy-4-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-6-(4-methoxyphenyl)-2,2-dimethyl-3a,4,7,7a-tetrahydro-[1,3]dioxolo[4,5-c]pyran | 1351958-22-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氧吡喃
• 英文名称: (3aR,4R,6S,7aR)-6-butoxy-4-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-6-(4-methoxyphenyl)-2,2-dimethyl-3a,4,7,7a-tetrahydro-[1,3]dioxolo[4,5-c]pyran
• CAS: 1351958-22-9
• 化学式: C₂₄H₃₆O₇
• 分子量: 436.546
• InChiKey: RZKKJKSRECVEKI-NQZVWWGESA-N

物化性质

• 沸点：
  509.0±50.0 °C(predicted)
• 密度：
  1.16±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  31
• 可旋转键数：
  7
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  64.6
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为产物：
  描述：

  1,5-anhydro-2-deoxy-3,4:6,7-di-O-isopropylidene-1-C-(4-methoxyphenyl)-D-manno-hept-1-enitol 在 偶氮二异丁腈 、 三正丁基氢锡 作用下， 以 二氯甲烷 、 甲苯 为溶剂， 反应 0.75h， 生成 (3aR,4R,6S,7aR)-6-butoxy-4-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-6-(4-methoxyphenyl)-2,2-dimethyl-3a,4,7,7a-tetrahydro-[1,3]dioxolo[4,5-c]pyran
  参考文献：
  名称：

  Unexpected Anomeric Selectivity of a 1-C-Arylglycal Donor in Kdo Glycoside Synthesis

  摘要：

  A novel class of 1-C-arylglycals was developed and subjected to N-iodosuccinimide-mediated glycosylations with alcohols. Unexpectedly, all reactions provided 2-iodo-beta-D-ketopyranosides in high yields and excellent stereoselectivity. After removal of the 2-iodide by radical conditions, the aryl group was smoothly oxidized to provide the corresponding beta-Kdo glycosides. A mechanism for the stereoselective formation of beta-D-ketopyranosides was proposed, which was supported by evidence from X-ray crystallography.

  DOI：

  10.1021/jo201531j

文献信息

• Unexpected Anomeric Selectivity of a 1-<i>C</i>-Arylglycal Donor in Kdo Glycoside Synthesis
  作者：Yuxin Qian、Jianhao Feng、Masood Parvez、Chang-Chun Ling

  DOI：10.1021/jo201531j

  日期：2012.1.6

  A novel class of 1-C-arylglycals was developed and subjected to N-iodosuccinimide-mediated glycosylations with alcohols. Unexpectedly, all reactions provided 2-iodo-beta-D-ketopyranosides in high yields and excellent stereoselectivity. After removal of the 2-iodide by radical conditions, the aryl group was smoothly oxidized to provide the corresponding beta-Kdo glycosides. A mechanism for the stereoselective formation of beta-D-ketopyranosides was proposed, which was supported by evidence from X-ray crystallography.