(2R,3S,4S)-2,3-Epoxy-4-methyl-7-octen-1-ol | 142459-24-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 环氧化物
• 英文名称: (2R,3S,4S)-2,3-Epoxy-4-methyl-7-octen-1-ol
• 英文别名: [(2R,3S)-3-[(2S)-hex-5-en-2-yl]oxiran-2-yl]methanol
• CAS: 142459-24-3
• 化学式: C₉H₁₆O₂
• 分子量: 156.225
• InChiKey: APLCVMXEKAGPIG-YIZRAAEISA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  11
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.78
• 拓扑面积：
  32.8
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (2R,3S,4S)-2,3-Epoxy-4-methyl-7-octen-1-ol 在 4-二甲氨基吡啶 、 三乙胺 、 红铝 作用下， 以 四氢呋喃 、 二氯甲烷 、 甲苯 为溶剂， 反应 7.0h， 生成 (3R,4S)-4-Methyl-1-(trimethylacetoxy)-7-octen-3-ol
  参考文献：
  名称：

  Total synthesis of tetronomycin

  摘要：

  The first total synthesis of (+)-tetronomycin (1), a novel tetronic acid ionophore antibiotic, has been achieved through the synthesis and assemblage of the four cyclic segments 4, 5, 7, and 8. Construction of the C5-C-13 cyclohexyl portion 5 involves as the key step either a Beckmann fragmentation of the bicyclic ketone oxime 45 or an L-Selectride-mediated reductive annulation of the nona-2,7-dienoate 53. The C-14-C28 polyether fragment 6 was constructed by a BF3-catalyzed coupling reaction of the C-14-C22 allylsilane 7 and the C23-C28 tetrahydrofuran 8 which were derived, respectively, from L-ascorbic acid or (R)-3-hydroxyisobutyrate and L-rhamnal. The union of 5 and 6 by an aldol condensation, followed by photoisomerization of the derived diastereomeric alpha,beta-unsaturated esters, provided (Z)-61, which was converted to the aldehyde 63. Subsequent acylation of the tetronate 4 with 63 via an aldol reaction-oxidation sequence afforded the protected tetronomycin 64. Final deprotection provided synthetic tetronomycin, which was characterized as its sodium salt.

  DOI：

  10.1021/jo00036a026
• 作为产物：
  描述：

  (S)-4-Methyl-2,7-octadien-1-ol 在 titanium(IV) isopropylate 、 叔丁基过氧化氢 、 L-(+)-diisopropyl tartrate 、 4 A molecular sieve 作用下， 以 异辛烷 、 二氯甲烷 为溶剂， 反应 7.0h， 以88%的产率得到(2R,3S,4S)-2,3-Epoxy-4-methyl-7-octen-1-ol
  参考文献：
  名称：

  Total synthesis of tetronomycin

  摘要：

  The first total synthesis of (+)-tetronomycin (1), a novel tetronic acid ionophore antibiotic, has been achieved through the synthesis and assemblage of the four cyclic segments 4, 5, 7, and 8. Construction of the C5-C-13 cyclohexyl portion 5 involves as the key step either a Beckmann fragmentation of the bicyclic ketone oxime 45 or an L-Selectride-mediated reductive annulation of the nona-2,7-dienoate 53. The C-14-C28 polyether fragment 6 was constructed by a BF3-catalyzed coupling reaction of the C-14-C22 allylsilane 7 and the C23-C28 tetrahydrofuran 8 which were derived, respectively, from L-ascorbic acid or (R)-3-hydroxyisobutyrate and L-rhamnal. The union of 5 and 6 by an aldol condensation, followed by photoisomerization of the derived diastereomeric alpha,beta-unsaturated esters, provided (Z)-61, which was converted to the aldehyde 63. Subsequent acylation of the tetronate 4 with 63 via an aldol reaction-oxidation sequence afforded the protected tetronomycin 64. Final deprotection provided synthetic tetronomycin, which was characterized as its sodium salt.

  DOI：

  10.1021/jo00036a026