(-)-(3aS,6S,7R,7aS)-6-[2-(tert-butyldiphenylsilyloxy)ethyl]-7-hydroxytetrahydro-1H-pyrano[4,3-d]oxazol-2(6H)-one | 1082074-14-3

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (-)-(3aS,6S,7R,7aS)-6-[2-(tert-butyldiphenylsilyloxy)ethyl]-7-hydroxytetrahydro-1H-pyrano[4,3-d]oxazol-2(6H)-one
• 英文别名: (3aS,6S,7R,7aS)-6-[2-[tert-butyl(diphenyl)silyl]oxyethyl]-7-hydroxy-1,3a,4,6,7,7a-hexahydropyrano[4,3-d][1,3]oxazol-2-one
• CAS: 1082074-14-3
• 化学式: C₂₄H₃₁NO₅Si
• 分子量: 441.599
• InChiKey: ZXNOOOOIJCXMHD-CBPXPLCBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.19
• 重原子数：
  31
• 可旋转键数：
  7
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  77
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  (-)-(3aS,6S,7R,7aS)-6-[2-(tert-butyldiphenylsilyloxy)ethyl]-7-hydroxytetrahydro-1H-pyrano[4,3-d]oxazol-2(6H)-one 在 dowex 作用下， 以 甲醇 为溶剂， 反应 72.0h， 以84%的产率得到(-)-(3aS,6S,7R,7aS)-7-hydroxy-6-(2-hydroxyethyl)tetrahydro-1H-pyrano[4,3-d]oxazol-2(6H)-one
  参考文献：
  名称：

  [2,3]-Sigmatropic Rearrangements of 3-Sulfinyl Dihydropyrans: Application to the Syntheses of the Cores of ent-Dysiherbaine and Deoxymalayamicin A

  摘要：

  The [2,3]-sigmatropic rearrangement of a variety of configurationally stable diastereomeric allylic sulfinyl dihydropyrans, produced by base-promoted cyclization of sulfinyl dienols, has been studied. In some cases, the efficient transformation of these substrates into dihydropyranols required an in-depth study of reaction conditions, with the preferred protocol relying on the use of DABCO in warm toluene. This methodology has been applied to the syntheses of the cores of ent-dysiherbaine and deoxymalayamicin A by means of efficient tethered aminohydroxylations.

  DOI：

  10.1021/jo8015709
• 作为产物：
  描述：

  (-)-(3S,6S)-6-[2-(tert-butyldiphenylsilyloxy)ethyl]-3,6-dihydro-2H-pyran-3-yl mesitylsulfonyloxycarbamate 在 potassium osmate(VI) dihydrate 、 N,N-二异丙基乙胺 作用下， 以 丙醇 、 水 为溶剂， 反应 5.0h， 以74%的产率得到(-)-(3aS,6S,7R,7aS)-6-[2-(tert-butyldiphenylsilyloxy)ethyl]-7-hydroxytetrahydro-1H-pyrano[4,3-d]oxazol-2(6H)-one
  参考文献：
  名称：

  [2,3]-Sigmatropic Rearrangements of 3-Sulfinyl Dihydropyrans: Application to the Syntheses of the Cores of ent-Dysiherbaine and Deoxymalayamicin A

  摘要：

  The [2,3]-sigmatropic rearrangement of a variety of configurationally stable diastereomeric allylic sulfinyl dihydropyrans, produced by base-promoted cyclization of sulfinyl dienols, has been studied. In some cases, the efficient transformation of these substrates into dihydropyranols required an in-depth study of reaction conditions, with the preferred protocol relying on the use of DABCO in warm toluene. This methodology has been applied to the syntheses of the cores of ent-dysiherbaine and deoxymalayamicin A by means of efficient tethered aminohydroxylations.

  DOI：

  10.1021/jo8015709