(5S)-3-(2-((1S,4R,5S,6S,7R)-4-(tert-butyldimethylsilyloxy)-1-methyl-7-((1E,3E)-3-methylpenta-1,3-dienyl)-8-oxabicyclo[3.2.1]octan-6-yl)-1-hydroxyethyl)-5-isobutyl-1-(phenylcarbonyl)pyrrolidin-2-one | 1352577-42-4

• 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: (5S)-3-(2-((1S,4R,5S,6S,7R)-4-(tert-butyldimethylsilyloxy)-1-methyl-7-((1E,3E)-3-methylpenta-1,3-dienyl)-8-oxabicyclo[3.2.1]octan-6-yl)-1-hydroxyethyl)-5-isobutyl-1-(phenylcarbonyl)pyrrolidin-2-one
• CAS: 1352577-42-4
• 化学式: C₃₇H₅₇NO₅Si
• 分子量: 623.949
• InChiKey: ZATUHGQCTPYLAP-HKLGVHQBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.94
• 重原子数：
  44.0
• 可旋转键数：
  10.0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.68
• 拓扑面积：
  76.07
• 氢给体数：
  1.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  (5S)-3-(2-((1S,4R,5S,6S,7R)-4-(tert-butyldimethylsilyloxy)-1-methyl-7-((1E,3E)-3-methylpenta-1,3-dienyl)-8-oxabicyclo[3.2.1]octan-6-yl)-1-hydroxyethyl)-5-isobutyl-1-(phenylcarbonyl)pyrrolidin-2-one 在 草酰氯 、 二甲基亚砜 、 N,N-二异丙基乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 2.25h， 以42%的产率得到(5S)-3-(2-((1S,4R,5S,6S,7R)-4-(tert-butyldimethylsilyloxy)-1-methyl-7-((1E,3E)-3-methylpenta-1,3-dienyl)-8-oxabicyclo[3.2.1]octan-6-yl)ethanoyl)-5-isobutyl-1-(phenylcarbonyl)pyrrolidin-2-one
  参考文献：
  名称：

  Identification of an unexpected 2-oxonia[3,3]sigmatropic rearrangement/aldol pathway in the formation of oxacyclic rings. Total synthesis of (+)-aspergillin PZ

  摘要：

  This paper reports the first unambiguous evidence that the cascade synthesis of tetrahydrofuran-containing oxacyclic molecules depicted in Scheme 12 can take place by a 2-oxonia[3,3]sigmatropic/aldol mechanism rather than by a Prins cyclization/pinacol rearrangement sequence. The 8-oxabicyclo [3.2.1]octyl aldehyde products of this reaction, 20 and 29, were employed to complete the first total synthesis of the structurally remarkable isoindolone alkaloid (+)-aspergillin PZ (1). The lack of activity seen in two tumor cell lines for synthetic (+)-aspergillin PZ calls into question the suggestion that aspergillin PZ, like many aspochalasin diterpenes, might exhibit useful antitumor properties. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2011.09.079
• 作为产物：
  描述：

  苯甲酰氯 在 sodium hydride 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 、 正己烷 、 mineral oil 为溶剂， 反应 9.28h， 生成 (5S)-3-(2-((1S,4R,5S,6S,7R)-4-(tert-butyldimethylsilyloxy)-1-methyl-7-((1E,3E)-3-methylpenta-1,3-dienyl)-8-oxabicyclo[3.2.1]octan-6-yl)-1-hydroxyethyl)-5-isobutyl-1-(phenylcarbonyl)pyrrolidin-2-one
  参考文献：
  名称：

  Identification of an unexpected 2-oxonia[3,3]sigmatropic rearrangement/aldol pathway in the formation of oxacyclic rings. Total synthesis of (+)-aspergillin PZ

  摘要：

  This paper reports the first unambiguous evidence that the cascade synthesis of tetrahydrofuran-containing oxacyclic molecules depicted in Scheme 12 can take place by a 2-oxonia[3,3]sigmatropic/aldol mechanism rather than by a Prins cyclization/pinacol rearrangement sequence. The 8-oxabicyclo [3.2.1]octyl aldehyde products of this reaction, 20 and 29, were employed to complete the first total synthesis of the structurally remarkable isoindolone alkaloid (+)-aspergillin PZ (1). The lack of activity seen in two tumor cell lines for synthetic (+)-aspergillin PZ calls into question the suggestion that aspergillin PZ, like many aspochalasin diterpenes, might exhibit useful antitumor properties. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2011.09.079