1,1-diphenyltetrahydro-1H-oxazolo[3,4-α]pyrazin-3(5H)-one | 847556-28-9

• 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: 1,1-diphenyltetrahydro-1H-oxazolo[3,4-α]pyrazin-3(5H)-one
• 英文别名: 1,1-diphenylhexahydro-3H-oxazolo[3,4-a]pyrazin-3-one；1,1-diphenyl-hexahydro-oxazolo[3,4-a]pyrazin-3-one；hexahydro-1,1-diphenyl-3H-oxazolo[3,4-a]pyrazin-3-one；1,1-Diphenyltetrahydro-1H-oxazolo[3,4-a]pyrazin-3(5H)-one；1,1-diphenyl-6,7,8,8a-tetrahydro-5H-[1,3]oxazolo[3,4-a]pyrazin-3-one
• CAS: 847556-28-9
• 化学式: C₁₈H₁₈N₂O₂
• 分子量: 294.353
• InChiKey: UMLLCOYGUHIBSL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  22
• 可旋转键数：
  2
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.28
• 拓扑面积：
  41.6
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  1,1-diphenyltetrahydro-1H-oxazolo[3,4-α]pyrazin-3(5H)-one 在 碳酸氢钠 、 potassium iodide 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 60.0h， 生成 N-(3-(methylamino)propyl)-3-oxo-1,1-diphenyltetrahydro-1H-oxazolo[3,4-a]pyrazine-7(3H)-carboxamide
  参考文献：
  名称：

  Identification of Neuropeptide S Antagonists: Structure–Activity Relationship Studies, X-ray Crystallography, and in Vivo Evaluation

  摘要：

  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.

  DOI：

  10.1021/cn500113c
• 作为产物：
  描述：

  7-benzyl-1,1-diphenylhexahydrooxazolo[3,4-a]pyrazin-3-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 41.0h， 生成 1,1-diphenyltetrahydro-1H-oxazolo[3,4-α]pyrazin-3(5H)-one
  参考文献：
  名称：

  恶唑并[3,4-a]吡嗪衍生物的结构-活性关系研究导致发现具有强大体内活性的新型神经肽 S 受体拮抗剂

  摘要：

  Neuropeptide S 通过与其 G 蛋白偶联受体（称为神经肽 S 受体 (NPSR)）相互作用来调节重要的神经生物学功能，包括运动、焦虑和药物滥用。 NPSR 拮抗剂可潜在用于治疗药物滥用疾病，迫切需要新的有效治疗方法。体外有效的 NPSR 拮抗剂已被发现，然而，需要进一步优化其体内药理学特性。这项工作描述了恶唑并[3,4- a ]吡嗪类的一系列新 NPSR 拮抗剂。与该领域的参考药理学工具SHA-68相比，胍衍生物16在体外表现出纳摩尔级活性，在体内效力提高了 5 倍。化合物16可以被认为是研究 NPSergic 系统转化潜力的新工具。还进行了深入的分子建模研究，以获得对观察到的结构-活性关系的新见解，并提供配体/NPSR相互作用的更新模型。

  DOI：

  10.1021/acs.jmedchem.0c02223

文献信息

• Bicyclic piperazine compound and use thereof
  申请人：Fukatsu Kohji

  公开号：US20070072865A1

  公开（公告）日：2007-03-29

  The present invention provides a compound represented by the formula: wherein R 1 is an acyl group, R 2 is a hydrocarbon group which may be substituted or the like, R 3 is a hydrocarbon group which may be substituted or the like, R 4 is a hydrocarbon group which may be substituted or the like, n is from 0 to 4, and X is an oxygen atom, a sulfur atom or the like, or a salt thereof. The invention also provides a compound which has a TGR23 antagonist activity and thus is useful for prevention and treatment of cancer.

  本发明提供一种化合物，其化学式为：其中，R1是酰基，R2是烃基，可以被取代或类似物，R3是烃基，可以被取代或类似物，R4是烃基，可以被取代或类似物，n为0至4，X为氧原子、硫原子或类似物或其盐。本发明还提供一种具有TGR23拮抗活性的化合物，因此可用于预防和治疗癌症。
• Process for Preparation of Nonnatural Amino Acid and Intermediate Thereof
  申请人：Ishii Yutaka

  公开号：US20070208180A1

  公开（公告）日：2007-09-06

  A process for the preparation of a nonnatural amino acid represented by the following formula (C): which is characterized by reacting a compound represented by the following formula (A1), a compound represented by the following formula (A2) and a compound represented by the following formula (A3) (step 1): to form a compound represented by the following formula (B): and then subjecting the compound (B) to deprotection of protective groups of carboxyl groups and to decarboxylation (wherein X 1 and X 2 are a leaving group, R 1 is an aromatic group, an unsaturated heterocyclic group, or R 6 CO group, R 2 and R 3 are a protected carboxyl group, R 4 is a protected amino group, R 5 is hydrogen atom, an aliphatic hydrocarbon group, an aromatic group, or a heterocyclic group, R 6 is an aromatic group or an unsaturated heterocyclic group, etc., and p, q and r are an integer of 0 to 10).

  一种制备以下式(C)所表示的非天然氨基酸的方法，其特征在于将以下式(A1)、以下式(A2)和以下式(A3)所表示的化合物进行反应（步骤1）：以形成以下式(B)所表示的化合物，然后将化合物(B)进行羧基保护基的去保护和脱羧作用（其中X1和X2是离去基，R1是芳香基、不饱和杂环基或R6CO基，R2和R3是保护羧基，R4是保护氨基，R5是氢原子、脂肪烃基、芳香基或杂环基，R6是芳香基或不饱和杂环基等，p、q和r是0到10的整数）。
• Bicyclic piperazine compound having TGR23 antagonistic activity
  申请人：Takeda Pharmaceutical Company Limited

  公开号：US07795267B2

  公开（公告）日：2010-09-14

  The present invention provides a compound represented by the formula: wherein R1 is —(C═O)—NR7R8 or —(C═O)—OR6, R2 is a hydrocarbon group which may be substituted or the like, R3 is a hydrocarbon group which may be substituted or the like, R4 is a hydrocarbon group which may be substituted or the like, n is from 0 to 4, and X is an oxygen atom, or a salt thereof. The invention also provides a compound which has a TGR23 antagonist activity and thus is useful for prevention and treatment of cancer.

  本发明提供了一种化合物，其表示为以下公式：其中R1为—（C═O）—NR7R8或—（C═O）—OR6，R2为可取代或类似的烃基，R3为可取代或类似的烃基，R4为可取代或类似的烃基，n为0至4，X为氧原子或其盐。本发明还提供了一种具有TGR23拮抗活性的化合物，因此可用于预防和治疗癌症。
• BICYCLIC PIPERAZINE COMPOUND AND USE THEREOF
  申请人：Takeda Pharmaceutical Company Limited

  公开号：EP1661898A1

  公开（公告）日：2006-05-31

  The present invention provides a compound represented by the formula: wherein R1 is an acyl group, R2 is a hydrocarbon group which may be substituted or the like, R3 is a hydrocarbon group which may be substituted or the like, R4 is a hydrocarbon group which may be substituted or the like, n is from 0 to 4, and X is an oxygen atom, a sulfur atom or the like, or a salt thereof. The invention also provides a compound which has a TGR23 antagonist activity and thus is useful for prevention and treatment of cancer.

  本发明提供了一种由式表示的化合物： 其中 R1 是酰基，R2 是可被取代的烃基或类似物，R3 是可被取代的烃基或类似物，R4 是可被取代的烃基或类似物，n 是 0 至 4，X 是氧原子、硫原子或类似物，或其盐。本发明还提供了一种化合物，它具有 TGR23 拮抗剂活性，因此可用于预防和治疗癌症。
• PROCESS FOR PRODUCTION OF NONNATURAL AMINO ACIDS AND INTERMEDIATES THEREFOR
  申请人：DAISO CO., LTD.

  公开号：EP1739077A1

  公开（公告）日：2007-01-03

  A process for the preparation of a nonnatural amino acid represented by the following formula (C): which is characterized by reacting a compound represented by the following formula (A1), a compound represented by the following formula (A2) and a compound represented by the following formula (A3) (step 1): to form a compound represented by the following formula (B): and then subjecting the compound (B) to deprotection of protective groups of carboxyl groups and to decarboxylation (wherein X1 and X2 are a leaving group, R1 is an aromatic group, an unsaturated heterocyclic group, or R6CO group, R2 and R3 are a protected carboxyl group, R4 is a protected amino group, R5 is hydrogen atom, an aliphatic hydrocarbon group, an aromatic group, or a heterocyclic group, R6 is an aromatic group or an unsaturated heterocyclic group, etc., and p, q and r are an integer of 0 to 10).

  一种制备下式(C)所代表的非天然氨基酸的工艺： 其特征在于将下式（A1）代表的化合物、下式（A2）代表的化合物和下式（A3）代表的化合物反应（步骤 1）： 生成下式（B）代表的化合物： 然后将化合物（B）进行羧基保护基团的脱保护和脱羧（其中 X1 和 X2 是离去基团，R1 是芳香基团、不饱和杂环基团或 R6CO 基团，R2 和 R3 是受保护的羧基，R4 是受保护的氨基，R5 是氢原子、脂肪烃基团、芳香基团或杂环基团，R6 是芳香基团或不饱和杂环基团等、以及 p、q 和 r 为 0 至 10 的整数）。