ethyl (E)-5-((tert-butyldimethylsilyl)oxy)-2-methylpent-2-enoate | 468745-69-9

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: ethyl (E)-5-((tert-butyldimethylsilyl)oxy)-2-methylpent-2-enoate
• 英文别名: ethyl (E)-5-[tert-butyl(dimethyl)silyl]oxy-2-methylpent-2-enoate
• CAS: 468745-69-9
• 化学式: C₁₄H₂₈O₃Si
• 分子量: 272.46
• InChiKey: MJPVXZCUEFOKDO-ZRDIBKRKSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.91
• 重原子数：
  18
• 可旋转键数：
  8
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.79
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  ethyl (E)-5-((tert-butyldimethylsilyl)oxy)-2-methylpent-2-enoate 在 咪唑 、 四丁基氟化铵 、 三氧化硫吡啶 、 4-甲基苯磺酸吡啶 、 二异丁基氢化铝 、 二甲基亚砜 、 三乙胺 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 、 甲苯 为溶剂， 反应 15.0h， 生成 1-{2-[(2E,4E)-7-(tert-Butyl-dimethyl-silanyloxy)-4-methyl-hepta-2,4-dienyloxy]-tetrahydro-furan-2-yl}-ethanol
  参考文献：
  名称：

  环状缩醛系链分子内 Diels-Alder 环加成。针对 (±)-夫司二内酯 C 的全合成的研究

  摘要：

  Efforts toward a synthesis of (+/-)-fusidilactone C is described here featuring a novel cyclic acetal tethered intramolecular Diels-Alder strategy. This unique and facile IMDA turned out to be highly endo-selective [endo-I and endo-II], as assessed from our mechanistic analyses. When using protic solvents or Lewis acids, the endo-I selectivity was greatly enhanced. Thus, it proved to be a real challenge to circumvent this excellent stereochemical outcome, which is undesired for the total synthesis, as an exo-II selectivity is desired. Progress was made to use the endo-II cycloadduct and to access the desired trans-2-oxadecalin motif in (+/-)-fusidilactone C.

  DOI：

  10.3987/com-10-s(e)93
• 作为产物：
  描述：

  (3-丁烯-1-基氧基)(二甲基)(2-甲基-2-丙基)硅烷 在 臭氧 作用下， 以 二氯甲烷 、 甲苯 为溶剂， 反应 42.0h， 生成 ethyl (E)-5-((tert-butyldimethylsilyl)oxy)-2-methylpent-2-enoate
  参考文献：
  名称：

  Fast and efficient synthesis of novel fumagillin analogues

  摘要：

  A novel class of non-carbocyclic ring analogues of the potent angiogenesis inhibitors fumagillin and TNP-470 have been enantioselectively and efficiently synthesised starting from pyridine-2-thiol in 10 steps in excellent overall yield. (C) 2002 Elsevier Science. Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(02)00514-8

文献信息

• Palladium-Catalyzed Long-Range Deconjugative Isomerization of Highly Substituted α,β-Unsaturated Carbonyl Compounds
  作者：Luqing Lin、Ciro Romano、Clément Mazet

  DOI：10.1021/jacs.6b06390

  日期：2016.8.17

  long-range deconjugative isomerization of a broad range of α,β-unsaturated amides, esters, and ketones by an in situ generated palladium hydride catalyst is described. This redox-economical process is triggered by a hydrometalation event and is thermodynamically driven by the refunctionalization of a primary or a secondary alcohol into an aldehyde or a ketone. Di-, tri-, and tetrasubstituted carbon-carbon

  描述了通过原位生成的氢化钯催化剂对各种 α,β-不饱和酰胺、酯和酮进行长程解共轭异构化。这种氧化还原经济过程由加氢金属化事件触发，并由伯醇或仲醇再官能化为醛或酮的热力学驱动。二、三和四取代的碳-碳双键反应效率相似；该系统对多种官能团具有耐受性，并且烯烃迁移可以持续超过 30 个碳原子。再官能化的产物通常以良好到极好的产率分离。机理研究支持由重复迁移插入和 β-H 消除组成的链行走过程。异构化反应的双向性是通过同位素标记实验建立的，该实验使用具有与两个末端功能分离的双键的底物。还发现氢化钯直接参与形成产物的互变异构步骤。使用异构的三取代 α,β-不饱和酯证明了原位生成的 [Pd-H] 的两亲性特征。最后，在一小组α-取代的α，β-不饱和酮的异构化中获得的高水平对映选择性预示着这种非常规异构化的对映选择性版本的成功开发。还发现氢化钯直接参与形成产物的互变异构步骤。使用异构的三取代 α,β-不饱和酯证明了原位生成的
• Rh-Catalyzed Asymmetric Hydroformylation of Functionalized 1,1-Disubstituted Olefins
  作者：Xiao Wang、Stephen L. Buchwald

  DOI：10.1021/ja2092689

  日期：2011.11.30

  The first method for the highly enantioselective rhodium-catalyzed hydroformylation of 1,1-disubstituted olefins has been developed. By employing either of the P-chirogenic phosphine ligands BenzP* and QuinoxP*, linear aldehydes with β-chirality can be prepared in a highly enantioselective fashion with good chemo- and regioselectivities.

  已开发出第一种对 1,1-二取代烯烃进行高度对映选择性的铑催化加氢甲酰化的方法。通过使用 P-手性膦配体 BenzP* 和 QuinoxP* 中的任一个，可以以高度对映选择性的方式制备具有 β-手性的线性醛，并具有良好的化学和区域选择性。
• Modular Fragment Synthesis and Bioinformatic Analysis Propose a Revised Vancoresmycin Stereoconfiguration
  作者：Stefanie Spindler、Lukas M. Wingen、Max Schönenbroicher、Maximilian Seul、Martina Adamek、Sebastian Essig、Michael Kurz、Nadine Ziemert、Dirk Menche

  DOI：10.1021/acs.orglett.0c03957

  日期：2021.2.19

  Elaborate fragments of the proposed stereostructure of the complex polyketide antibiotic vancoresmycin have been synthesized in a stereoselective fashion based on a modular and convergent approach. Significant nuclear magnetic resonance differences in one of these subunits compared with the natural product question the proposed stereoconfiguration. Consequently, an extensive bioinformatics analysis

  基于模块化和收敛方法，以立体选择性方式合成了复杂聚酮化合物万科霉素的拟议立体结构的精细片段。与天然产物相比，这些亚基之一的显着核磁共振差异对提出的立体构型提出了质疑。因此，对生物合成基因簇进行了广泛的生物信息学分析，导致对这种高效抗生素的立体构型建议进行了修订。
• Synthesis of Tetramic Acid Fragments Derived from Vancoresmycin Showing Inhibitory Effects towards <i>S. aureus</i>
  作者：Lukas Martin Wingen、Marvin Rausch、Tanja Schneider、Dirk Menche

  DOI：10.1002/cmdc.202000241

  日期：2020.8.5

  . These bioactive compounds were structurally most closely related to the authentic vancoresmycin building block. Additionally, the compounds induced a lial‐lux bioreporter, which responds to cell wall stress induced by antibiotics that interfere with the lipid II biosynthesis cycle. These data suggest the tetramic acid moiety to be a part of the vancoresmycin pharmacophore.

  已经开发出一种有效的途径来生产各种万古霉素型四酸。模块化路线基于有效的Fries类型重排，可引入各种附加的乙酰基残基。的对新的特特拉姆酸的最小抑制浓度（MIC）值的金黄色葡萄球菌和大肠杆菌进行了测定，揭示了三个新化合物表现出抗微生物活性的金黄色葡萄球菌。这些生物活性化合物在结构上与真正的万古霉素构件密切相关。此外，该化合物引起的LIAL -勒克斯bioreporter，它对干扰脂质II生物合成周期的抗生素诱导的细胞壁应激作出反应。这些数据表明，该四酸部分是万古霉素药效团的一部分。
• A Cyclic Acetal Tethered Intramolecular Diels-Alder Cycloaddition. Studies Directed toward a Total Synthesis of (±)-Fusidilactone C
  作者：Richard P. Hsung、Jiashi Wang、Sunil K. Ghosh、Yonggang Wei、John B. Feltenberger

  DOI：10.3987/com-10-s(e)93

  日期：——

  Efforts toward a synthesis of (+/-)-fusidilactone C is described here featuring a novel cyclic acetal tethered intramolecular Diels-Alder strategy. This unique and facile IMDA turned out to be highly endo-selective [endo-I and endo-II], as assessed from our mechanistic analyses. When using protic solvents or Lewis acids, the endo-I selectivity was greatly enhanced. Thus, it proved to be a real challenge to circumvent this excellent stereochemical outcome, which is undesired for the total synthesis, as an exo-II selectivity is desired. Progress was made to use the endo-II cycloadduct and to access the desired trans-2-oxadecalin motif in (+/-)-fusidilactone C.