(4R)-6-methyl-2-oxo-4-phenyl-3,4-dihydro-1H-pyrimidine-5-carboxylic acid

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二嗪类
• 英文名称: (4R)-6-methyl-2-oxo-4-phenyl-3,4-dihydro-1H-pyrimidine-5-carboxylic acid
• 化学式: C₁₂H₁₂N₂O₃
• 分子量: 232.239
• InChiKey: RJPIEFIYDRBNFF-SNVBAGLBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 重原子数：
  17
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.17
• 拓扑面积：
  78.4
• 氢给体数：
  3
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  1,2,3,4-四氢-6-甲基-2-氧代-4-苯基-5-嘧啶羧酸 生成 (4R)-6-methyl-2-oxo-4-phenyl-3,4-dihydro-1H-pyrimidine-5-carboxylic acid
  参考文献：
  名称：

  Separation of enantiomers of 4-aryldihydropyrimidines by direct enantioselective HPLC. A critical comparison of chiral stationary phases

  摘要：

  The separation of the enantiomers of 29 racemic 4-aryldihydropyrimidine-5-carboxylates (DHPMs), aza-analogs of nifedipine-type dihydropyridine calcium channel modulators, was evaluated in direct enantioselective HPLC, employing the following commercially available chiral stationary phases (CSPs): Chiralcel OD-H, ChiraDex, Chirobiotic V and T, and Whelk-O1. In addition, a 1,2-diphenyl-1,2-diaminoethane based CSP and two quinine carbamate based chiral ion exchangers were also employed. For all 29 DHPMs separation of individual enantiomers could be achieved with at least one CSP with alpha-values ranging from 1.10 to 8.67. (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0957-4166(97)00214-0

文献信息

• ENANTIOSELECTIVE SYNTHESIS OF DIHYDROPYRIMIDINONES AND HEXAHYDROPYRIMIDINONES
  申请人：Universitat de les Illes Balears

  公开号：EP3260446A1

  公开（公告）日：2017-12-27

  The present invention provides with a "one pot" easily scalable preparation process, or method to obtain enantiomerically enriched dihydropyrimidinones (DHPMs), in high yield and high enantiomeric purity, based on the concept of organocatalysis by a network of cooperative hydrogen bonds (NCHB). Said preparation process obtains enantiomerically enriched DHPMs without the use of metal-based catalysis and with the possibility of the recovery of the chiral organocatalyst comprising a NCHB used. The present invention also provides with new enantiomerically and diastereomerically enriched hexahydropyrimidinones (HHPMs), as well as a preparation process to obtain them also based on the concept of organocatalysis by a NCHB. Said preparation process obtains enantiomerically and diastereomerically enriched HHPMs without the use of metal-based catalysis and with the possibility of the recovery of the chiral organocatalyst comprising a NCHB used.

  本发明基于协同氢键网络（NCHB）有机催化的概念，提供了一种 "一锅式 "易扩展的制备工艺或方法，以高产率和高对映体纯度获得对映体富集的二氢嘧啶酮（DHPMs）。所述制备工艺无需使用金属催化，即可获得对映体富集的 DHPM，并有可能回收由所使用的 NCHB 组成的手性有机催化剂。本发明还提供了新的对映异构体和非对映异构体富集的六氢嘧啶酮（HHPMs），以及同样基于 NCHB 有机催化概念的获得它们的制备工艺。该制备工艺无需使用金属催化即可获得对映体和非对映异构体富集的六氢嘧啶酮（HHPMs），并有可能回收由所使用的 NCHB 组成的手性有机催化剂。
• Separation of enantiomers of 4-aryldihydropyrimidines by direct enantioselective HPLC. A critical comparison of chiral stationary phases
  作者：Oliver P. Kleidernigg、C.Oliver Kappe

  DOI：10.1016/s0957-4166(97)00214-0

  日期：1997.6

  The separation of the enantiomers of 29 racemic 4-aryldihydropyrimidine-5-carboxylates (DHPMs), aza-analogs of nifedipine-type dihydropyridine calcium channel modulators, was evaluated in direct enantioselective HPLC, employing the following commercially available chiral stationary phases (CSPs): Chiralcel OD-H, ChiraDex, Chirobiotic V and T, and Whelk-O1. In addition, a 1,2-diphenyl-1,2-diaminoethane based CSP and two quinine carbamate based chiral ion exchangers were also employed. For all 29 DHPMs separation of individual enantiomers could be achieved with at least one CSP with alpha-values ranging from 1.10 to 8.67. (C) 1997 Elsevier Science Ltd.