(3aR)-N-(4-fluorobenzyl)-3-oxo-1,1-diphenyltetrahydro-1H-oxazolo[3,4-a]pyrazine-7(3H)-carboxamide | 847555-74-2

• 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: (3aR)-N-(4-fluorobenzyl)-3-oxo-1,1-diphenyltetrahydro-1H-oxazolo[3,4-a]pyrazine-7(3H)-carboxamide
• 英文别名: (R)-SHA 68；(9R)-3-oxo-1,1-diphenyltetrahydrooxazolo[3,4-a]pyrazine-7-carboxylic acid 4-fluorobenzylamide；(8aR)-N-[(4-fluorophenyl)methyl]-3-oxo-1,1-diphenyl-5,6,8,8a-tetrahydro-[1,3]oxazolo[3,4-a]pyrazine-7-carboxamide
• CAS: 847555-74-2
• 化学式: C₂₆H₂₄FN₃O₃
• 分子量: 445.493
• InChiKey: SFRQIPRTNYHJHP-HSZRJFAPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  33
• 可旋转键数：
  4
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.23
• 拓扑面积：
  61.9
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  (R)-1,1-diphenyl-7-((S)-1-phenylethyl)tetrahydro-1H-oxazolo[3,4-a]pyrazin-3(5H)-one 在 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 四氢呋喃 、 乙腈 为溶剂， 反应 36.0h， 生成 (3aR)-N-(4-fluorobenzyl)-3-oxo-1,1-diphenyltetrahydro-1H-oxazolo[3,4-a]pyrazine-7(3H)-carboxamide
  参考文献：
  名称：

  Synthesis and Separation of the Enantiomers of the Neuropeptide S Receptor Antagonist (9R/S)-3-Oxo-1,1-diphenyl-tetrahydro-oxazolo[3,4-a]pyrazine-7-carboxylic Acid 4-Fluoro-benzylamide (SHA 68)

  摘要：

  This study reports the synthesis, chromatographic separation, and pharmacological evaluation of the two enantiomers of the neuropeptide S receptor (NPSR) antagonist (9R/S)-3-oxo-1,1-diphenyl-tetrahydro-oxazolo[3,4-a]pyrazine-7-carboxylic acid 4-fluoro-benzylamide (SHA 68). The (9R)-3-oxo-1, 1-diphenyl-tetrahydro-oxazolo[3,4-a]pyrazine-7-carboxylic acid 4-fluoro-benzylamide (compound 10) and (9S)-3-oxo-1,1-diphenyl-tetrahydro-oxazolo [3,4-a]pyrazine-7-carboxylic acid 4-fluoro-benzylamide (compound 10a) were synthesized and their purity assessed by chiral chromatography. The absolute configuration of the enantiomer 10 has been assigned from the crystal structure of the corresponding (S)-phenyl ethyl amine derivative 8. Calcium mobilization studies performed on cells expressing the recombinant NPSR demonstrated that compound 10 is the active enantiomer while the contribution of 10a to the NPSR antagonist properties of the racemic mixture is negligible.

  DOI：

  10.1021/jm200138r

文献信息

• Identification of Neuropeptide S Antagonists: Structure–Activity Relationship Studies, X-ray Crystallography, and in Vivo Evaluation
  作者：Carla Hassler、Yanan Zhang、Brian Gilmour、Tyler Graf、Timothy Fennell、Rodney Snyder、Jeffrey R. Deschamps、Rainer K. Reinscheid、Celia Garau、Scott P. Runyon

  DOI：10.1021/cn500113c

  日期：2014.8.20

  Modulation of the neuropeptide S (NPS) system has been linked to a variety of CNS disorders such as panic disorder, anxiety, sleeping disorders, asthma, obesity, PTSD, and substance abuse. In this study, a series of diphenyltetrahydro-1H-oxazolo[3,4-α]pyrazin-3(5H)-ones were synthesized and evaluated for antagonist activity at the neuropeptide S receptor. The absolute configuration was determined by chiral resolution of the key synthetic intermediate, followed by analysis of one of the individual enantiomers by X-ray crystallography. The R isomer was then converted to a biologically active compound (34) that had a Ke of 36 nM. The most potent compound displayed enhanced aqueous solubility compared with the prototypical antagonist SHA-68 and demonstrated favorable pharmacokinetic properties for behavioral assessment. In vivo analysis in mice indicated a significant blockade of NPS induced locomotor activity at an ip dose of 50 mg/kg. This suggests that analogs having improved drug-like properties will facilitate more detailed studies of the neuropeptide S receptor system.
• Synthesis and Separation of the Enantiomers of the Neuropeptide S Receptor Antagonist (9<i>R</i>/<i>S</i>)-3-Oxo-1,1-diphenyl-tetrahydro-oxazolo[3,4-<i>a</i>]pyrazine-7-carboxylic Acid 4-Fluoro-benzylamide (SHA 68)
  作者：Claudio Trapella、Michela Pela、Luisa Del Zoppo、Girolamo Calo、Valeria Camarda、Chiara Ruzza、Alberto Cavazzini、Valentina Costa、Valerio Bertolasi、Rainer K. Reinscheid、Severo Salvadori、Remo Guerrini

  DOI：10.1021/jm200138r

  日期：2011.4.28

  This study reports the synthesis, chromatographic separation, and pharmacological evaluation of the two enantiomers of the neuropeptide S receptor (NPSR) antagonist (9R/S)-3-oxo-1,1-diphenyl-tetrahydro-oxazolo[3,4-a]pyrazine-7-carboxylic acid 4-fluoro-benzylamide (SHA 68). The (9R)-3-oxo-1, 1-diphenyl-tetrahydro-oxazolo[3,4-a]pyrazine-7-carboxylic acid 4-fluoro-benzylamide (compound 10) and (9S)-3-oxo-1,1-diphenyl-tetrahydro-oxazolo [3,4-a]pyrazine-7-carboxylic acid 4-fluoro-benzylamide (compound 10a) were synthesized and their purity assessed by chiral chromatography. The absolute configuration of the enantiomer 10 has been assigned from the crystal structure of the corresponding (S)-phenyl ethyl amine derivative 8. Calcium mobilization studies performed on cells expressing the recombinant NPSR demonstrated that compound 10 is the active enantiomer while the contribution of 10a to the NPSR antagonist properties of the racemic mixture is negligible.