(2S)-1-(4-methylphenyl)sulfonyl-2-[tri(propan-2-yl)silyloxymethyl]-2H-pyrrol-5-one | 345642-39-9

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (2S)-1-(4-methylphenyl)sulfonyl-2-[tri(propan-2-yl)silyloxymethyl]-2H-pyrrol-5-one
• CAS: 345642-39-9
• 化学式: C₂₁H₃₃NO₄SSi
• 分子量: 423.649
• InChiKey: ZTDMNJZZVBEKSZ-IBGZPJMESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.64
• 重原子数：
  28
• 可旋转键数：
  8
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  72.1
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (2S)-1-(4-methylphenyl)sulfonyl-2-[tri(propan-2-yl)silyloxymethyl]-2H-pyrrol-5-one 在 2,6-二甲基吡啶 、 N-氯代丁二酰亚胺 、 magnesium sulfate 、 环己烯 作用下， 以 二氯甲烷 、 苯 为溶剂， 反应 96.0h， 生成
  参考文献：
  名称：

  A unified synthetic strategy toward oroidin-derived alkaloids premised on a biosynthetic proposal

  摘要：

  Details of the evolution of a synthetic strategy toward the spirocyclic chlorocyclopentane core of oroidin-derived alkaloids, including the axinellamines and potentially adaptable to palau'amine, are described. A proposed refinement of the Kinnel-Scheuer biosynthetic proposal for palau'amine is posited. Studies undertaken to improve the regioselectivity and efficiency of a key Diels-Alder reaction utilizing a novel protecting group strategy, microwave chemistry, and other strategies are described. Further insights regarding the suitability of different protecting groups during the epoxidation/chlorination/ring contraction sequence are disclosed. Several interesting by-products from this reaction sequence are reported. These studies have led to a unified synthetic strategy to the axinellamines and palau'amine. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2005.12.068
• 作为产物：
  描述：

  L-焦谷氨酸甲酯 在 咪唑 、 sodium tetrahydroborate 、 sodium hexamethyldisilazane 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 、 乙醇 、 N,N-二甲基甲酰胺 为溶剂， 生成 (2S)-1-(4-methylphenyl)sulfonyl-2-[tri(propan-2-yl)silyloxymethyl]-2H-pyrrol-5-one
  参考文献：
  名称：

  A unified synthetic strategy toward oroidin-derived alkaloids premised on a biosynthetic proposal

  摘要：

  Details of the evolution of a synthetic strategy toward the spirocyclic chlorocyclopentane core of oroidin-derived alkaloids, including the axinellamines and potentially adaptable to palau'amine, are described. A proposed refinement of the Kinnel-Scheuer biosynthetic proposal for palau'amine is posited. Studies undertaken to improve the regioselectivity and efficiency of a key Diels-Alder reaction utilizing a novel protecting group strategy, microwave chemistry, and other strategies are described. Further insights regarding the suitability of different protecting groups during the epoxidation/chlorination/ring contraction sequence are disclosed. Several interesting by-products from this reaction sequence are reported. These studies have led to a unified synthetic strategy to the axinellamines and palau'amine. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2005.12.068

文献信息

• Highly Regioselective Diels−Alder Reactions toward Oroidin Alkaloids:  Use of a Tosylvinyl Moiety as a Nitrogen Masking Group with Adjustable Electronics
  作者：Paul J. Dransfield、Shaohui Wang、Anja Dilley、Daniel Romo

  DOI：10.1021/ol0473602

  日期：2005.4.1

  [reaction: see text] The use of the p-toluenesulfonyl (Ts) and tosylvinyl (Tsv) groups as nitrogen masking groups imparted high regioselectivity in Diels-Alder reactions directed toward members of the oroidin-derived marine alkaloid family. The electron-withdrawing Tsv group was utilized as an electronically adjustable nitrogen-protecting group as subsequent hydrogenation provided the more electron-rich

  [反应：见正文]对甲苯磺酰基（Ts）和甲苯磺酰基（Tsv）基团作为氮掩蔽基团的使用在Diels-Alder反应中赋予了高区位选择性，该反应是针对得自麦冬蛋白的海洋生物碱家族的成员。吸电子的Tsv基团被用作电子可调的氮保护基团，因为随后的氢化提供了更富电子的甲苯磺酰基（Tse）基团。这种电子调节策略避免了保护基团的交换，并为关键的氯化/环缩合顺序提供了所需的电子设备。
• Enantioselective Strategy to the Spirocyclic Core of Palau'amine and Related Bisguanidine Marine Alkaloids
  作者：Anja S. Dilley、Daniel Romo

  DOI：10.1021/ol015864j

  日期：2001.5.1

  enantioselective strategy to the spirocyclic core found in the oroidin-derived family of bisguanidine marine alkaloids has been devised, premised on a biosynthetic proposal. Herein, we describe the successful implementation of this strategy, which entails a Diels-Alder reaction and a chlorination/ring contraction sequence that delivers the fully functionalized spirocyclic core. In this initial report, an intermolecular

  [结构：见正文]在生物合成方案的基础上，已设计出一种对映体选择性策略，该策略是在源自鸟苷的双胍海洋生物碱家族中发现的螺环核心。在本文中，我们描述了该策略的成功实施，该策略涉及Diels-Alder反应和提供完全功能化螺环核心的氯化/环收缩序列。在该初始报告中，分子间氯化反应生成的环戊烷在C17处相对于帕劳胺而言是异构体，在C11时相对于乙酰丙胺而言是异构体。