3,5-O-isopropylidene-D-xylono-1,4-lactone

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 3,5-O-isopropylidene-D-xylono-1,4-lactone
• 英文别名: (4aR,7R,7aR)-7-hydroxy-2,2-dimethyl-4,4a,7,7a-tetrahydrofuro[3,2-d][1,3]dioxin-6-one
• 化学式: C₈H₁₂O₅
• 分子量: 188.18
• InChiKey: URMSJXJHPVBPOJ-PBXRRBTRSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.4
• 重原子数：
  13
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.88
• 拓扑面积：
  65
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  3,5-O-isopropylidene-D-xylono-1,4-lactone 在 三甲基铝 、 potassium carbonate 作用下， 以 四氢呋喃 、 正己烷 、 丙酮 为溶剂， 生成 (R)-2-((4S,5S)-5-hydroxy-2,2-dimethyl-1,3-dioxan-4-yl)-N,2-dimethoxy-N-methylacetamide
  参考文献：
  名称：

  Synthesis of Key Fragments of Leiodelide A

  摘要：

  The synthesis of all key fragments of the marine macrolide lelodelide A is described. The polyoxygenated northern subunit is derived from D-xylose, while the southern subunit is rapidly assembled via an aldol reaction and Horner-Wadsworth-Emmons olefination. This highly convergent approach will allow for rapid modification and assembly of several isomers of lelodelide A, which may be necessary considering the assignment of leiodelide B has been previously shown to be incorrect.

  DOI：

  10.1021/ol201183f
• 作为产物：
  描述：

  D-吡喃木糖 在 溴 、 potassium carbonate 、 软骨素硫酸钠盐 作用下， 以 水 、 丙酮 为溶剂， 反应 4.5h， 生成 3,5-O-isopropylidene-D-xylono-1,4-lactone
  参考文献：
  名称：

  Synthesis of Key Fragments of Leiodelide A

  摘要：

  The synthesis of all key fragments of the marine macrolide lelodelide A is described. The polyoxygenated northern subunit is derived from D-xylose, while the southern subunit is rapidly assembled via an aldol reaction and Horner-Wadsworth-Emmons olefination. This highly convergent approach will allow for rapid modification and assembly of several isomers of lelodelide A, which may be necessary considering the assignment of leiodelide B has been previously shown to be incorrect.

  DOI：

  10.1021/ol201183f

文献信息

• Spectroscopic, crystallographic and computational studies of the formation and isomerization of cyclic acetals and ketals of pentonolactones
  作者：So-Yeop Han、Madeleine M. Joullié、Valery V. Fokin、Nicos A. Petasis

  DOI：10.1016/s0957-4166(00)80400-0

  日期：1994.12

  D-xylonolactone, D-lyxonolactone 2-deoxy-D-ribonolactone toward benzaldehyde and acetone in acidic media, were examined. The reactions involved complex equilibria and were investigated with extensive 13C NMR studies as well as X-ray crystallographic analysis of selected products. Molecular mechanics (MM2) and semiempirical (PM3 and AM1) calculations of some derivatives were carried out in order to facilitate structural

  检查了D-核糖内酯，L-阿拉伯糖内酯，D-木糖内酯，D-苯二酸内酯2-脱氧-D-核糖内酯在酸性介质中对苯甲醛和丙酮的不同反应性。反应涉及复杂的平衡，并通过广泛的13 C NMR研究以及所选产品的X射线晶体学分析进行了研究。为了方便结构和构象的分配，对某些衍生物进行了分子力学（MM2）和半经验（PM3和AM1）计算。D-戊烯-1,4-内酯与苯甲醛和丙酮反应的反应活性差异在结构和构象方面均得到合理化。