(-)-Phenylmenthyl (+)-O-methylpodocarpate | 154903-60-3

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: (-)-Phenylmenthyl (+)-O-methylpodocarpate
• 英文别名: [(1R,2S,5R)-5-methyl-2-(2-phenylpropan-2-yl)cyclohexyl] (1S,4aS,10aR)-6-methoxy-1,4a-dimethyl-2,3,4,9,10,10a-hexahydrophenanthrene-1-carboxylate
• CAS: 154903-60-3
• 化学式: C₃₄H₄₆O₃
• 分子量: 502.737
• InChiKey: QBLOGVBRLMLFDN-QIDVMHMASA-N

物化性质

• 沸点：
  580.8±50.0 °C(predicted)
• 密度：
  1.08±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  9.7
• 重原子数：
  37
• 可旋转键数：
  6
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (-)-Phenylmenthyl (+)-O-methylpodocarpate 在 sodium chlorite 、 sodium dihydrogenphosphate 、 lithium aluminium tetrahydride 、 2-甲基-2-丁烯 、 草酰氯 、 二甲基亚砜 、 三乙胺 作用下， 以 四氢呋喃 、 水 、 叔丁醇 为溶剂， 反应 72.83h， 生成 O-methylpodocarpic acid
  参考文献：
  名称：

  Asymmetric induction in manganese(III)-based oxidative free-radical cyclizations of phenylmenthyl acetoacetates and 2,5-dimethylpyrrolidine acetoacetamides

  摘要：

  Mn(III)-based oxidative free-radical cyclization of phenylmenthyl ester 1e afforded 90% of 13 with 86% de. Cyclization of 31b provided 56% of (+)-podocarpic acid precursor 32e with 82% de. The direction of de was opposite in these two cases. Oxidative cyclization of a-methyl beta-keto ester 44b gave a 1:1.6 mixture of 46b and 47b while alpha-propyl beta-keto ester 44d produced a > 10:1 mixture of 46d and 47d indicating that the extent and direction of de is dependent on the size of the alpha-substituent The reaction proceeds through transition states 12 and 56 with large alpha-substituents and through transition states 19 and 57 with small a-substituents. The de depends on the double-bond substitution pattern as shown by the decreased de with 37b and 37d, and selectivity in the 5-exo cyclization of 64b, 65b, 70b, and 71b is low.

  DOI：

  10.1021/jo00079a006
• 作为产物：
  描述：

  (-)-8-苯基薄荷醇 在 盐酸 、 4-二甲氨基吡啶 、 N,N-二甲基丙烯基脲 、 manganese triacetate 、 锌 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 甲醇 、 乙醚 、 甲苯 为溶剂， 反应 136.5h， 生成 (-)-Phenylmenthyl (+)-O-methylpodocarpate
  参考文献：
  名称：

  Asymmetric induction in manganese(III)-based oxidative free-radical cyclizations of phenylmenthyl acetoacetates and 2,5-dimethylpyrrolidine acetoacetamides

  摘要：

  Mn(III)-based oxidative free-radical cyclization of phenylmenthyl ester 1e afforded 90% of 13 with 86% de. Cyclization of 31b provided 56% of (+)-podocarpic acid precursor 32e with 82% de. The direction of de was opposite in these two cases. Oxidative cyclization of a-methyl beta-keto ester 44b gave a 1:1.6 mixture of 46b and 47b while alpha-propyl beta-keto ester 44d produced a > 10:1 mixture of 46d and 47d indicating that the extent and direction of de is dependent on the size of the alpha-substituent The reaction proceeds through transition states 12 and 56 with large alpha-substituents and through transition states 19 and 57 with small a-substituents. The de depends on the double-bond substitution pattern as shown by the decreased de with 37b and 37d, and selectivity in the 5-exo cyclization of 64b, 65b, 70b, and 71b is low.

  DOI：

  10.1021/jo00079a006

文献信息

• Asymmetric induction in manganese(III)-based oxidative free-radical cyclizations of phenylmenthyl acetoacetates and 2,5-dimethylpyrrolidine acetoacetamides
  作者：Qingwei Zhang、Raju M. Mohan、Laura Cook、Sophia Kazanis、Daniel Peisach、Bruce M. Foxman、Barry B. Snider

  DOI：10.1021/jo00079a006

  日期：1993.12

  Mn(III)-based oxidative free-radical cyclization of phenylmenthyl ester 1e afforded 90% of 13 with 86% de. Cyclization of 31b provided 56% of (+)-podocarpic acid precursor 32e with 82% de. The direction of de was opposite in these two cases. Oxidative cyclization of a-methyl beta-keto ester 44b gave a 1:1.6 mixture of 46b and 47b while alpha-propyl beta-keto ester 44d produced a > 10:1 mixture of 46d and 47d indicating that the extent and direction of de is dependent on the size of the alpha-substituent The reaction proceeds through transition states 12 and 56 with large alpha-substituents and through transition states 19 and 57 with small a-substituents. The de depends on the double-bond substitution pattern as shown by the decreased de with 37b and 37d, and selectivity in the 5-exo cyclization of 64b, 65b, 70b, and 71b is low.