(1S,2R,3R,4R)-3-[[tert-butyl(dimethyl)silyl]oxymethyl]-7-oxabicyclo[2.2.1]hept-5-ene-2-carbaldehyde | 198822-21-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 氧唑烯
• 英文名称: (1S,2R,3R,4R)-3-[[tert-butyl(dimethyl)silyl]oxymethyl]-7-oxabicyclo[2.2.1]hept-5-ene-2-carbaldehyde
• CAS: 198822-21-8
• 化学式: C₁₄H₂₄O₃Si
• 分子量: 268.428
• InChiKey: BMASPDJHKMLKTP-MROQNXINSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.78
• 重原子数：
  18
• 可旋转键数：
  5
• 环数：
  2.0
• 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：

  (1S,2R,3R,4R)-3-[[tert-butyl(dimethyl)silyl]oxymethyl]-7-oxabicyclo[2.2.1]hept-5-ene-2-carbaldehyde 在 四丁基氟化铵 、 4-甲基苯磺酸吡啶 、 tetramethylammonium triacetoxyborohydride 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 二氯甲烷 、 溶剂黄146 、 乙腈 为溶剂， 反应 23.5h， 生成 (1S,2S,3R,4R,1'R,3'S)-2-(4',6'-dioxa-5',5'-dimethyl-3'-propylcyclohexyl)-3-hydroxymethyl-7-oxabicyclo[2.2.1]hept-5-ene
  参考文献：
  名称：

  A novel and efficient stereoselective synthesis of the southern part of pamamycin-607

  摘要：

  The C1'C11' portion of the antibiotic pamamycin-607 Was synthesized from the enantiomerically pure hydroxy acetate 3, readily available by enzymatic transesterification of the corresponding diol with vinylacetate. This synthesis entailed a series of stereoselective transformations: the absolute configurations of C-6' and C-8' were fixed by an aldol condensation followed by an anti-reduction of the resulting beta-hydroxyketone. The configurations of the last two asymmetric centers C-2' and C-3' were controlled by a novel highly diastereoselective intramolecular cyclization catalyzed by fluoride ions. (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0957-4166(97)00475-8
• 作为产物：
  描述：

  (1S,2S,3R,4R)-2-乙酰氧基甲基-3-羟甲基-7-氧杂双环[2.2.1]庚-5-烯 在 咪唑 、 氢氧化钾 、 戴斯-马丁氧化剂 作用下， 以 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 3.0h， 生成 (1S,2R,3R,4R)-3-[[tert-butyl(dimethyl)silyl]oxymethyl]-7-oxabicyclo[2.2.1]hept-5-ene-2-carbaldehyde
  参考文献：
  名称：

  A novel and efficient stereoselective synthesis of the southern part of pamamycin-607

  摘要：

  The C1'C11' portion of the antibiotic pamamycin-607 Was synthesized from the enantiomerically pure hydroxy acetate 3, readily available by enzymatic transesterification of the corresponding diol with vinylacetate. This synthesis entailed a series of stereoselective transformations: the absolute configurations of C-6' and C-8' were fixed by an aldol condensation followed by an anti-reduction of the resulting beta-hydroxyketone. The configurations of the last two asymmetric centers C-2' and C-3' were controlled by a novel highly diastereoselective intramolecular cyclization catalyzed by fluoride ions. (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0957-4166(97)00475-8

文献信息

• Total Synthesis of Branimycin: An Evolutionary Approach
  作者：Valentin S. Enev、Wolfgang Felzmann、Alexey Gromov、Stefan Marchart、Johann Mulzer

  DOI：10.1002/chem.201200257

  日期：2012.7.27

  The first total synthesis of the macrolactone antibiotic branimycin (4) has been described. The key disconnection leads to a cis‐dehydrodecalone core and a polyketide side chain which are connected via organometallic addition. The dehydrodecalone core was targeted via altogether five different approaches featuring various kinds of chiral elements and ring‐closing methodology. In the end the most successful

  已经描述了大内酯抗生素布雷尼霉素的首次全合成（4）。关键的分离导致顺式-脱氢十氢萘酮核和聚酮化物侧链，它们通过有机金属加成连接。十氢癸酮核心通过总共五种不同的方法作为目标，这些方法具有各种手性元素和闭环方法。最后，选择了最成功的方法，从二环氧萘109开始进行合成。因此，通过有机金属脱对称反应引入氧官能团和碳附件，以生成环氧乙烷107，乙烯基碘化物11在环氧乙烷107上生成。转化成有机锂物质后加入有机硅。通过经由迈克尔加成和随后的大内酯化引入酯侧链来完成合成。