(2S,4S)-2,4-dimethyl-1-(tert-butyldiphenylsilyloxy)-5-hexene | 320742-72-1

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: (2S,4S)-2,4-dimethyl-1-(tert-butyldiphenylsilyloxy)-5-hexene
• 英文别名: tert-butyl-[(2S,4S)-2,4-dimethylhex-5-enoxy]-diphenylsilane
• CAS: 320742-72-1
• 化学式: C₂₄H₃₄OSi
• 分子量: 366.619
• InChiKey: LYBAIRCGUIWSTL-RTWAWAEBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.41
• 重原子数：
  26
• 可旋转键数：
  9
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (2S,4S)-2,4-dimethyl-1-(tert-butyldiphenylsilyloxy)-5-hexene 在 palladium on activated charcoal 4-二甲氨基吡啶 、 sodium azide 、 氰基磷酸二乙酯 、 氢气 、 三乙胺 、 dimeric 9-borabicyclo[3.3.1]nonane 作用下， 以 四氢呋喃 、 二氯甲烷 、 乙酸乙酯 、 N,N-二甲基甲酰胺 为溶剂， -5.0~20.0 ℃ 、101.33 kPa 条件下， 反应 2.17h， 生成 (R)-N-((3S,5S)-6-(tert-butyldiphenylsilyloxy)-3,5-dimethylhexyl)-2-methylbutanamide
  参考文献：
  名称：

  快速合成kalkitoxins：确定天然kalkitoxin的绝对立体结构

  摘要：

  Kalkitoxin，一种强效神经毒素从海洋蓝细菌分离鞘丝藻majuscula，其同类物（1 - 7）被有效地合成利用Hruby的非对映选择性1,4-加成和Wipf的恶唑啉噻唑啉转化为关键步骤。这些合成的努力与自然kalkitoxin的光谱研究相结合，明确确定kalkitoxin的绝对立体结构为7。

  DOI：

  10.1016/j.tet.2004.06.014
• 作为产物：
  描述：

  (R)-3-[(tert-butyl)diphenylsilyloxy]-1-iodo-2-methylpropane 在 正丁基锂 、 四丙基高钌酸铵 、 N-甲基吗啉氧化物 、 lithium chloride 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 生成 (2S,4S)-2,4-dimethyl-1-(tert-butyldiphenylsilyloxy)-5-hexene
  参考文献：
  名称：

  Unexpected stereochemical tolerance for the biological activity of tyroscherin

  摘要：

  Here we describe the concise syntheses of the 15 diastereomers and key analogs of the natural product tyroscherin. While systematic analysis of the analogs clearly demonstrated that the hydrocarbon tail is important for biological activity, structure-activity relationship studies of the complete tyroscherin diastereoarray revealed a surprisingly expansive stereochemical tolerance for the cytotoxic activity. Our results represent a departure from the tenet that biological activity is constrained to a narrow pharmacophore, and highlight the recently emerging appreciation for stereochemical flexibility in defining the essential structural elements of biologically active small molecules. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2011.01.027

文献信息

• Total Synthesis of Kendomycin Featuring Intramolecular Dötz Benzannulation
  作者：Kyosuke Tanaka、Masahito Watanabe、Kodai Ishibashi、Hiroshi Matsuyama、Yoko Saikawa、Masaya Nakata

  DOI：10.1021/ol100229f

  日期：2010.4.16

  One-step formation of the ansa-skeleton realized the synthesis of kendomycin, an ansa-type quinone methide. The Fischer carbene complex derived from the ansa-chain portion was subjected to the intramolecular Dötz benzannulation to afford the desired oxametacyclophane with exclusive regioselectivity. Subsequent Claisen rearrangement, ortho oxidation of the resulting phenol derivative, and mild transformation

  一步形成ansa骨架可以合成kendomycin（一种ansa型醌甲基化物）。将衍生自ansa链部分的Fischer卡宾配合物进行分子内Dötz苯环环化反应，以提供具有唯一区域选择性的期望的oxametacyclophane。随后的克莱森重排，所得酚衍生物的邻位氧化，以及在提供了金霉素的硅胶板上从对苯二酚向对苯二甲酰甲烷的温和转化。
• A Novel Approach toward the Synthesis of Kendomycin:  Selective Synthesis of a <i>C</i>-Aryl Glycoside as a Single Atropisomer
  作者：Stefan Pichlmair、Maria M. B. Marques、Martin P. Green、Harry J. Martin、Johann Mulzer

  DOI：10.1021/ol035846x

  日期：2003.11.1

  [reaction: see text] A convergent and concise route to an advanced precursor 2b of kendomycin (1) has been developed by applying a S(N)1 ring cyclization as a key step. The resulting C-aryl glycoside was initially isolated as a rotameric mixture, but after MOM protection of the o-hydroxyl of the phenol, the conformation was frozen to the desired kendomycin-like atropisomer.

  [反应：见正文]通过应用S（N）1环环化作为关键步骤，已开发出一条趋于简明的途径合成肯德霉素（1）的高级前体2b。最初将所得的C-芳基糖苷分离为旋转异构体混合物，但是在对苯酚的邻羟基进行MOM保护之后，将构象冷冻成所需的类似霉素的阻转异构体。
• Structure, Synthesis, and Biological Properties of Kalkitoxin, a Novel Neurotoxin from the Marine Cyanobacterium <i>Lyngbya </i><i>m</i><i>ajuscula</i>
  作者：Min Wu、Tatsufumi Okino、Lisa M. Nogle、Brian L. Marquez、R. Thomas Williamson、Namthip Sitachitta、Frederick W. Berman、Thomas F. Murray、Kevin McGough、Robert Jacobs、Kimberly Colsen、Toshinobu Asano、Fumiaki Yokokawa、Takayuki Shioiri、William H. Gerwick

  DOI：10.1021/ja005526y

  日期：2000.12.1
• Unexpected stereochemical tolerance for the biological activity of tyroscherin
  作者：Hyun Seop Tae、John Hines、Ashley R. Schneekloth、Craig M. Crews

  DOI：10.1016/j.bmc.2011.01.027

  日期：2011.3

  Here we describe the concise syntheses of the 15 diastereomers and key analogs of the natural product tyroscherin. While systematic analysis of the analogs clearly demonstrated that the hydrocarbon tail is important for biological activity, structure-activity relationship studies of the complete tyroscherin diastereoarray revealed a surprisingly expansive stereochemical tolerance for the cytotoxic activity. Our results represent a departure from the tenet that biological activity is constrained to a narrow pharmacophore, and highlight the recently emerging appreciation for stereochemical flexibility in defining the essential structural elements of biologically active small molecules. (C) 2011 Elsevier Ltd. All rights reserved.
• An expeditious total synthesis of kalkitoxins: determination of the absolute stereostructure of natural kalkitoxin
  作者：Fumiaki Yokokawa、Toshinobu Asano、Tatsufumi Okino、William H. Gerwick、Takayuki Shioiri

  DOI：10.1016/j.tet.2004.06.014

  日期：2004.8

  Kalkitoxin, a potent neurotoxin isolated from the marine cyanobacteria Lyngbya majuscula, and its congeners (1–7) were efficiently synthesized utilizing Hruby's diastereoselective 1,4-addition and the Wipf's oxazoline-thiazoline conversion as key steps. These synthetic efforts in combination with spectral studies of natural kalkitoxin clearly determined the absolute stereostructure of kalkitoxin to

  Kalkitoxin，一种强效神经毒素从海洋蓝细菌分离鞘丝藻majuscula，其同类物（1 - 7）被有效地合成利用Hruby的非对映选择性1,4-加成和Wipf的恶唑啉噻唑啉转化为关键步骤。这些合成的努力与自然kalkitoxin的光谱研究相结合，明确确定kalkitoxin的绝对立体结构为7。