(R)-Benzyloxy-((2S,3R,4S)-4-methyl-2-octyl-5-oxo-4-phenylsulfanyl-tetrahydro-furan-3-yl)-acetic acid benzyl ester | 183488-85-9

• 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: (R)-Benzyloxy-((2S,3R,4S)-4-methyl-2-octyl-5-oxo-4-phenylsulfanyl-tetrahydro-furan-3-yl)-acetic acid benzyl ester
• 英文别名: benzyl (2R)-2-[(2S,3R,4S)-4-methyl-2-octyl-5-oxo-4-phenylsulfanyloxolan-3-yl]-2-phenylmethoxyacetate
• CAS: 183488-85-9
• 化学式: C₃₅H₄₂O₅S
• 分子量: 574.781
• InChiKey: MATBRQYNFVFHDF-AXMAENODSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  9.4
• 重原子数：
  41
• 可旋转键数：
  17
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  87.1
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  (R)-Benzyloxy-((2S,3R,4S)-4-methyl-2-octyl-5-oxo-4-phenylsulfanyl-tetrahydro-furan-3-yl)-acetic acid benzyl ester 在 间氯过氧苯甲酸 作用下， 以 二氯甲烷 为溶剂， 反应 1.0h， 生成 (R)-((2S,3R,4S)-4-Benzenesulfinyl-4-methyl-2-octyl-5-oxo-tetrahydro-furan-3-yl)-benzyloxy-acetic acid benzyl ester
  参考文献：
  名称：

  A New Stereoselective Synthesis of (−)-Isoavenaciolide and (−)-Avenaciolide

  摘要：

  The synthesis of isoavenaciolide and avenaciolide in their natural enantiomeric forms are described. In both syntheses, alpha-(phenylthio)-beta-[(methoxycarbonyl)methyl]-gamma-lactones obtained by the base-induced cyclization of enantiomerically enriched gamma-[(phenylthio)acyl] alpha,beta-unsaturated esters were used as starting materials. In the isoavenaciolide synthesis the key step is the stereoselective hydroxylation of the enolate generated in the (methoxycarbonyl)methyl chain that permits the bis-lactonization by a double transesterification. The configuration in the quaternary center vicinal to the carbonyl group in the ring was critical in order to obtain successfully the alpha-methylene lactone. In avenaciolide, the stereoselective synthesis of the bis-lactone unit was performed taking advantage of the presence of the phenyl sulfide group which by previous activation was used as leaving group to obtain the fused ring by an intramolecular substitution utilizing the carboxylate of the beta-substituent as nucleophile. In this case, the alpha-methylene lactone was obtained by previously reported methodology.

  DOI：

  10.1021/jo9611935
• 作为产物：
  描述：

  ((2S,3S,4S)-4-Methyl-2-octyl-5-oxo-4-phenylsulfanyl-tetrahydro-furan-3-yl)-acetic acid benzyl ester 在 正丁基锂 、 MoO5*pyridine*HMPA 、 sodium hydride 、 六甲基二硅氮烷 作用下， 以 四氢呋喃 、 正己烷 、 N,N-二甲基甲酰胺 、 paraffin 为溶剂， 反应 4.0h， 生成 (R)-Benzyloxy-((2S,3R,4S)-4-methyl-2-octyl-5-oxo-4-phenylsulfanyl-tetrahydro-furan-3-yl)-acetic acid benzyl ester
  参考文献：
  名称：

  A New Stereoselective Synthesis of (−)-Isoavenaciolide and (−)-Avenaciolide

  摘要：

  The synthesis of isoavenaciolide and avenaciolide in their natural enantiomeric forms are described. In both syntheses, alpha-(phenylthio)-beta-[(methoxycarbonyl)methyl]-gamma-lactones obtained by the base-induced cyclization of enantiomerically enriched gamma-[(phenylthio)acyl] alpha,beta-unsaturated esters were used as starting materials. In the isoavenaciolide synthesis the key step is the stereoselective hydroxylation of the enolate generated in the (methoxycarbonyl)methyl chain that permits the bis-lactonization by a double transesterification. The configuration in the quaternary center vicinal to the carbonyl group in the ring was critical in order to obtain successfully the alpha-methylene lactone. In avenaciolide, the stereoselective synthesis of the bis-lactone unit was performed taking advantage of the presence of the phenyl sulfide group which by previous activation was used as leaving group to obtain the fused ring by an intramolecular substitution utilizing the carboxylate of the beta-substituent as nucleophile. In this case, the alpha-methylene lactone was obtained by previously reported methodology.

  DOI：

  10.1021/jo9611935