methyl 2-[[(4aS,8aS)-5,5,8a-trimethyl-2-oxo-3,4,4a,6,7,8-hexahydro-1H-naphthalen-1-yl]methyl]-5-methyl-3-oxohexanoate | 1006693-15-7

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 酮酸及其衍生物
• 英文名称: methyl 2-[[(4aS,8aS)-5,5,8a-trimethyl-2-oxo-3,4,4a,6,7,8-hexahydro-1H-naphthalen-1-yl]methyl]-5-methyl-3-oxohexanoate
• CAS: 1006693-15-7
• 化学式: C₂₂H₃₆O₄
• 分子量: 364.525
• InChiKey: VJKSINKRVPTUPW-DUDHFMMFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5
• 重原子数：
  26
• 可旋转键数：
  7
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.86
• 拓扑面积：
  60.4
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  methyl 2-[[(4aS,8aS)-5,5,8a-trimethyl-2-oxo-3,4,4a,6,7,8-hexahydro-1H-naphthalen-1-yl]methyl]-5-methyl-3-oxohexanoate 在 sodium hydroxide 、 盐酸 作用下， 以 甲醇 为溶剂， 反应 10.0h， 以55%的产率得到(4aR,4bS,8aS)-1-isopropyl-4b,8,8-trimethyl-4,4a,4b,5,6,7,8,8a,9,10-decahydrophenanthren-2(3H)-one
  参考文献：
  名称：

  Chemoenzymatic synthesis of (+)-totarol, (+)-podototarin, (+)-sempervirol, and (+)-jolkinolides E and D

  摘要：

  The enzymatic resolution products [(1R,4aR,8aR)-1,2,3,4,4a,5,6,7,8,8a-decahydro-5,5,8a-trimethyl-2-oxo-trans-naphthalene-1-methanol-2-ethylene acetal (8aR)-7 (98% ee) and {acetate of (IS,4aS,8aS)-1,2,3,4,4a,5,6,7,8,8a-decahydro-5,5,8a-trimethyl-2-oxo-trans-naphthalene-1-methanol-2-ethylene acetal} (8aS)-9 (>99% ee)] obtained by the lipase-catalyzed enantioselective acetylation of (+/-)-7 in the presence of vinyl acetate as an acyl donor were converted to the alpha,beta-unsaturated ketones (8aR)-6 and (8aS)-6, respectively. Concise syntheses of (+)-totarol 1, (+)-podototarin 2 and (+)-sempervirol 3 were achieved based on Michael reactions between (8aS)-6 and the appropriate P-keto ester followed by aldol condensation. The first chiral syntheses of (+)-jolkinolides E 4 and D 5 were achieved from (5R,10R,12R)-12-hydroxypodocarpa-8(14)-en-13-one 15 derived from (8aR)-6. (c) 2007 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2007.11.024
• 作为产物：
  描述：

  5-甲基-3-氧代己酸甲酯 、 (4aS,8aS)-3,4,4aα,5,6,7,8,8aβ-octahydro-5,5,8aβ-trimethyl-1-methylidene-2(1H)-naphthalenone 在 sodium methylate 作用下， 以 甲醇 为溶剂， 反应 16.0h， 以100%的产率得到methyl 2-[[(4aS,8aS)-5,5,8a-trimethyl-2-oxo-3,4,4a,6,7,8-hexahydro-1H-naphthalen-1-yl]methyl]-5-methyl-3-oxohexanoate
  参考文献：
  名称：

  Chemoenzymatic synthesis of (+)-totarol, (+)-podototarin, (+)-sempervirol, and (+)-jolkinolides E and D

  摘要：

  The enzymatic resolution products [(1R,4aR,8aR)-1,2,3,4,4a,5,6,7,8,8a-decahydro-5,5,8a-trimethyl-2-oxo-trans-naphthalene-1-methanol-2-ethylene acetal (8aR)-7 (98% ee) and {acetate of (IS,4aS,8aS)-1,2,3,4,4a,5,6,7,8,8a-decahydro-5,5,8a-trimethyl-2-oxo-trans-naphthalene-1-methanol-2-ethylene acetal} (8aS)-9 (>99% ee)] obtained by the lipase-catalyzed enantioselective acetylation of (+/-)-7 in the presence of vinyl acetate as an acyl donor were converted to the alpha,beta-unsaturated ketones (8aR)-6 and (8aS)-6, respectively. Concise syntheses of (+)-totarol 1, (+)-podototarin 2 and (+)-sempervirol 3 were achieved based on Michael reactions between (8aS)-6 and the appropriate P-keto ester followed by aldol condensation. The first chiral syntheses of (+)-jolkinolides E 4 and D 5 were achieved from (5R,10R,12R)-12-hydroxypodocarpa-8(14)-en-13-one 15 derived from (8aR)-6. (c) 2007 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2007.11.024