(2R,3S)-3-(tert-Butyldimethylsiloxy)-7,7-dichloro-2-methyloctanoic acid | 165260-21-9

• 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: (2R,3S)-3-(tert-Butyldimethylsiloxy)-7,7-dichloro-2-methyloctanoic acid
• 英文别名: (2R,3S)-3-[tert-butyl(dimethyl)silyl]oxy-7,7-dichloro-2-methyloctanoic acid
• CAS: 165260-21-9
• 化学式: C₁₅H₃₀Cl₂O₃Si
• 分子量: 357.393
• InChiKey: ZSYSPTLIUCBHAG-NEPJUHHUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.46
• 重原子数：
  21
• 可旋转键数：
  9
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.93
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (2R,3S)-3-(tert-Butyldimethylsiloxy)-7,7-dichloro-2-methyloctanoic acid 在 4-二甲氨基吡啶 、 camphor-10-sulfonic acid 、 氢氟酸 、 对甲苯磺酸 、 N,N'-二环己基碳二亚胺 作用下， 以 甲醇 、 二氯甲烷 、 乙腈 为溶剂， 反应 53.0h， 生成 Dolabellin
  参考文献：
  名称：

  Dolabellin, a Cytotoxic Bisthiazole Metabolite from the Sea Hare Dolabella auricularia: Structural Determination and Synthesis

  摘要：

  Dolabellin (1), a novel cytotoxic metabolite which consists of two thiazole hydroxy acids and a new dichlorinated beta-hydroxy acid, was isolated from the Japanese sea hare Dolabella auricularia. The gross structure of 1 was elucidated on the basis of spectral data in conjunction with chemical degradations, which provided three methyl esters: methyl 2-(1-hydroxy-2 -methylpropyl)thiazole-4-carboxylate (2), methyl 2-(1,2-dihydroxyethyl)thiazole-4-carboxylate (3), and methyl 7,7-dichloro-3-hydroxy-2-methyloctanoate (4). The absolute stereochemistry of 1 was determined by stereoselective syntheses of two degradation products 2 and 3 and two diastereomeric octanoates 7a,b (the dechloro derivatives of degradation product 4), and the enantioselective total synthesis of dolabellin itself. Dechlorodolabellin (23) was also synthesized.

  DOI：

  10.1021/jo00120a021
• 作为产物：
  描述：

  (4R,5S)-3-<(2R,3S)-7,7-Dichloro-3-hydroxy-2-methyloctanoyl>-4-methyl-5-phenyl-2-oxazolidinone 在 lithium hydroxide 、 双氧水 、 potassium carbonate 、 三乙胺 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 为溶剂， 反应 6.0h， 生成 (2R,3S)-3-(tert-Butyldimethylsiloxy)-7,7-dichloro-2-methyloctanoic acid
  参考文献：
  名称：

  Dolabellin, a Cytotoxic Bisthiazole Metabolite from the Sea Hare Dolabella auricularia: Structural Determination and Synthesis

  摘要：

  Dolabellin (1), a novel cytotoxic metabolite which consists of two thiazole hydroxy acids and a new dichlorinated beta-hydroxy acid, was isolated from the Japanese sea hare Dolabella auricularia. The gross structure of 1 was elucidated on the basis of spectral data in conjunction with chemical degradations, which provided three methyl esters: methyl 2-(1-hydroxy-2 -methylpropyl)thiazole-4-carboxylate (2), methyl 2-(1,2-dihydroxyethyl)thiazole-4-carboxylate (3), and methyl 7,7-dichloro-3-hydroxy-2-methyloctanoate (4). The absolute stereochemistry of 1 was determined by stereoselective syntheses of two degradation products 2 and 3 and two diastereomeric octanoates 7a,b (the dechloro derivatives of degradation product 4), and the enantioselective total synthesis of dolabellin itself. Dechlorodolabellin (23) was also synthesized.

  DOI：

  10.1021/jo00120a021

文献信息

• Dolabellin, a Cytotoxic Bisthiazole Metabolite from the Sea Hare Dolabella auricularia: Structural Determination and Synthesis
  作者：Hiroki Sone、Takashi Kondo、Minoru Kiryu、Hiroyuki Ishiwata、Makoto Ojika、Kiyoyuki Yamada

  DOI：10.1021/jo00120a021

  日期：1995.7

  Dolabellin (1), a novel cytotoxic metabolite which consists of two thiazole hydroxy acids and a new dichlorinated beta-hydroxy acid, was isolated from the Japanese sea hare Dolabella auricularia. The gross structure of 1 was elucidated on the basis of spectral data in conjunction with chemical degradations, which provided three methyl esters: methyl 2-(1-hydroxy-2 -methylpropyl)thiazole-4-carboxylate (2), methyl 2-(1,2-dihydroxyethyl)thiazole-4-carboxylate (3), and methyl 7,7-dichloro-3-hydroxy-2-methyloctanoate (4). The absolute stereochemistry of 1 was determined by stereoselective syntheses of two degradation products 2 and 3 and two diastereomeric octanoates 7a,b (the dechloro derivatives of degradation product 4), and the enantioselective total synthesis of dolabellin itself. Dechlorodolabellin (23) was also synthesized.