(2S,4R,5R,6S)-2-Benzoyloxy-7-benzyloxy-5-hydroxy-4,6-dimethylheptan-3-one | 164145-54-4

• 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: (2S,4R,5R,6S)-2-Benzoyloxy-7-benzyloxy-5-hydroxy-4,6-dimethylheptan-3-one
• 英文别名: [(2S,4R,5R,6S)-5-hydroxy-4,6-dimethyl-3-oxo-7-phenylmethoxyheptan-2-yl] benzoate
• CAS: 164145-54-4
• 化学式: C₂₃H₂₈O₅
• 分子量: 384.472
• InChiKey: KBDLISLGOACHJP-TWFHAPMSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4
• 重原子数：
  28
• 可旋转键数：
  11
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.39
• 拓扑面积：
  72.8
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  (2S,4R,5R,6S)-2-Benzoyloxy-7-benzyloxy-5-hydroxy-4,6-dimethylheptan-3-one 在 2,6-二甲基吡啶 、 盐酸 、 sodium tetrahydroborate 、 sodium periodate 、 锂硼氢 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 为溶剂， 反应 25.5h， 生成 (2S,3S,4S)-5-Benzyloxy-2,4-dimethylpentan-1,3-diol
  参考文献：
  名称：

  Polyketide Synthesis Using the Boron-Mediated, anti-Aldol Reactions of Lactate-Derived Ketones: Total Synthesis of (-)-ACRL Toxin IIIB

  摘要：

  The boron-mediated, anti-selective, aldol reactions of ketone 2 (and related derivatives) proceed with high levels of asymmetric induction, diastereoselectivities of up to 200:1 in favour of the aldol adducts 4 are obtained with achiral aldehydes and reagent control operates with chiral aldehydes. These lactate-derived ketones provide a versatile chiral auxiliary for the synthesis of beta-hydroxy carbonyl compounds. Oxidative removal of the auxiliary provides enantiomerically pure aldehydes 5, while reductive deoxygenation gives the corresponding ethyl ketones 6. This practical asymmetric methodology for generating anti-aldols is illustrated by an efficient total synthesis of (-)-ACRL toxin IIIB (7), which proceeds in 15 steps from 2 with 21% overall yield and 88% diastereoselectivity.

  DOI：

  10.1055/s-1998-5929
• 作为产物：
  描述：

  (S)-2-hydroxy-3-pentanone 在 4-二甲氨基吡啶 、 二甲基十二/十四烷基叔胺 、 氯代二环己基硼烷 、 双氧水 、 N,N-二异丙基乙胺 作用下， 以 四氢呋喃 为溶剂， 反应 32.0h， 生成 (2S,4R,5R,6S)-2-Benzoyloxy-7-benzyloxy-5-hydroxy-4,6-dimethylheptan-3-one
  参考文献：
  名称：

  Studies in polypropionate synthesis: High π-face selectivity in syn and anti aldol reactions of chiral boron enolates of lactate-derived ketones

  摘要：

  Use of (c)Hex(2)BCl/Me(2)NEt in the aldol reactions of the alpha'-benzoyloxy ketone 7 with aldehydes leads to high stereoselectivity (97-99.5% ds) for the crystalline anti adducts 11. Under similar conditions, the corresponding benzyl ether 6 favours formation of the syn adducts 9.

  DOI：

  10.1016/0040-4039(94)88434-x

文献信息

• Manipulation of the aldol adducts from lactate-derived ketones. A versatile chiral auxiliary for the asymmetric synthesis of β-hydroxy carbonyl compounds
  作者：Ian Paterson、Debra J. Wallace

  DOI：10.1016/0040-4039(94)88435-8

  日期：1994.11

  The ketones 1 and 2 can be transformed into a wide range of enantiomerically-pure anti and syn α-methyl-β-hydroxy ketones and aldehydes. The α′-methyl group in 5 and 11 may be retained, demonstrating the use of the lactate-derived group as an optional chiral auxiliary.

  酮1和2可以转化到广泛范围的对映体纯的抗和顺式α甲基β羟基酮和醛。可以保留5和11中的α'-甲基，这表明使用乳酸酯衍生的基团作为任选的手性助剂。
• Studies in polypropionate synthesis: High π-face selectivity in syn and anti aldol reactions of chiral boron enolates of lactate-derived ketones
  作者：Ian Paterson、Debra J. Wallace、Silvia M. Velázquez

  DOI：10.1016/0040-4039(94)88434-x

  日期：1994.11

  Use of (c)Hex(2)BCl/Me(2)NEt in the aldol reactions of the alpha'-benzoyloxy ketone 7 with aldehydes leads to high stereoselectivity (97-99.5% ds) for the crystalline anti adducts 11. Under similar conditions, the corresponding benzyl ether 6 favours formation of the syn adducts 9.
• Polyketide Synthesis Using the Boron-Mediated, anti-Aldol Reactions of Lactate-Derived Ketones: Total Synthesis of (-)-ACRL Toxin IIIB
  作者：Ian Paterson

  DOI：10.1055/s-1998-5929

  日期：1998.3

  The boron-mediated, anti-selective, aldol reactions of ketone 2 (and related derivatives) proceed with high levels of asymmetric induction, diastereoselectivities of up to 200:1 in favour of the aldol adducts 4 are obtained with achiral aldehydes and reagent control operates with chiral aldehydes. These lactate-derived ketones provide a versatile chiral auxiliary for the synthesis of beta-hydroxy carbonyl compounds. Oxidative removal of the auxiliary provides enantiomerically pure aldehydes 5, while reductive deoxygenation gives the corresponding ethyl ketones 6. This practical asymmetric methodology for generating anti-aldols is illustrated by an efficient total synthesis of (-)-ACRL toxin IIIB (7), which proceeds in 15 steps from 2 with 21% overall yield and 88% diastereoselectivity.