| 1402588-92-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• CAS: 1402588-92-4
• 化学式: C₂₀H₃₅NO₃Si
• 分子量: 365.588
• InChiKey: ALSFLDNUTGIYBI-QXDIGNSFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  25.0
• 可旋转键数：
  5.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.85
• 拓扑面积：
  62.48
• 氢给体数：
  1.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  在 copper(l) iodide 、 偶氮二甲酰胺 、 三乙胺 、 三苯基膦 、 lithium hydroxide 作用下， 以 甲醇 、 N,N-二甲基甲酰胺 、 苯 为溶剂， 反应 36.0h， 生成
  参考文献：
  名称：

  Studies toward the Unique Pederin Family Member Psymberin: Full Structure Elucidation, Two Alternative Total Syntheses, and Analogs

  摘要：

  Two synthetic approaches to psymberin have been accomplished. A highly convergent first generation synthesis led to the complete stereochemical assignment and demonstrated that psymberin and irciniastatin A are identical compounds. This synthesis featured a diastereoselective aldol coupling between the aryl fragment and a central tetrahydropyran core and a novel one-pot procedure to convert an amide, via intermediacy of a sensitive methyl imidate, to the N-acyl aminal reminiscent of psymberin. The highlights of the second generation synthesis include an efficient iridium-catalyzed enantioselective bisallylation of neopentyl glycol and a stepwise Sonogashira coupling/cycloisomerization/reduction sequence to construct the dihydroisocoumarin unit. The two synthetic avenues were achieved in 17-18 steps (longest linear sequence, similar to 14-15 isolations) from 3 fragments prepared in 7-8 (first generation) and 3-8 (second generation) steps each. This convergent approach allowed for the preparation of sufficient amounts of psymberin (similar to 0.5 g) for follow-up biological studies. Meanwhile, our highly flexible strategy enabled the design and synthesis of multiple analogs, including a psymberin pederin hybrid, termed psympederin, that proved crucial to a comprehensive understanding of the chemical biology of psymberin and related compounds that will be described in a subsequent manuscript.

  DOI：

  10.1021/ja3057612