3-[1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethylamino]pyrrolidine | 727720-13-0

• 分子结构分类: 有机化合物 - 有机氮化合物
• 英文名称: 3-[1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethylamino]pyrrolidine
• CAS: 727720-13-0
• 化学式: C₁₄H₂₂N₂O₂
• 分子量: 250.341
• InChiKey: WLTUUMIYGMNBTR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.17
• 重原子数：
  18.0
• 可旋转键数：
  2.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  58.2
• 氢给体数：
  2.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  (2R)-1-([(2S)-1-(3,3,3-triphenylpropanoyl)pyrrolidin-2-yl]carbonyl)pyrrolidine-2-carboxylic acid 、 3-[1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethylamino]pyrrolidine 生成 1-[(2S)-2-[(2R)-2-(3-aminopyrrolidine-1-carbonyl)pyrrolidine-1-carbonyl]pyrrolidin-1-yl]-3,3,3-triphenylpropan-1-one
  参考文献：
  名称：

  Identification of a Novel 4-Aminomethylpiperidine Class of M₃ Muscarinic Receptor Antagonists and Structural Insight into Their M₃ Selectivity

  摘要：

  Identification of a novel class of potent and highly selective M-3 muscarinic antagonists is described. First, the structure-activity relationship in the cationic amine core of our previously reported triphenylpropionamide class of M-3 selective antagonists was explored by a small diamine library constructed in solid phase. This led to the identification of M-3 antagonists with a novel piperidine pharmacophore and significantly improved subtype selectivity from a previously reported class. Successive modification on the terminal triphenylpropionamide part of the newly identified class gave 14a as a potent M-3 selective antagonist that had > 100-fold selectivity versus the M-1, M-2, M-4, and M-5 receptors (M-3: K-i = 0.30 nM, M-1/M-3 = 570-fold, M-2/M-3 = 1600-fold, M-4/M-3 = 140-fold, M-5/M-3 = 12000-fold). The possible rationale for its extraordinarily higher subtype selectivity than reported M-3 antagonists was hypothesized by sequence alignment of multiple muscarinic receptors and a computational docking of 14a into transmembrane domains of M-3 receptors.

  DOI：

  10.1021/jm051205r
• 作为产物：
  描述：

  2-乙酰基-5,5-二甲基-1,3-环己二酮 、 3-氨基吡咯烷 以 氯仿 为溶剂， 反应 3.0h， 生成 3-[1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethylamino]pyrrolidine
  参考文献：
  名称：

  Identification of a Novel 4-Aminomethylpiperidine Class of M₃ Muscarinic Receptor Antagonists and Structural Insight into Their M₃ Selectivity

  摘要：

  Identification of a novel class of potent and highly selective M-3 muscarinic antagonists is described. First, the structure-activity relationship in the cationic amine core of our previously reported triphenylpropionamide class of M-3 selective antagonists was explored by a small diamine library constructed in solid phase. This led to the identification of M-3 antagonists with a novel piperidine pharmacophore and significantly improved subtype selectivity from a previously reported class. Successive modification on the terminal triphenylpropionamide part of the newly identified class gave 14a as a potent M-3 selective antagonist that had > 100-fold selectivity versus the M-1, M-2, M-4, and M-5 receptors (M-3: K-i = 0.30 nM, M-1/M-3 = 570-fold, M-2/M-3 = 1600-fold, M-4/M-3 = 140-fold, M-5/M-3 = 12000-fold). The possible rationale for its extraordinarily higher subtype selectivity than reported M-3 antagonists was hypothesized by sequence alignment of multiple muscarinic receptors and a computational docking of 14a into transmembrane domains of M-3 receptors.

  DOI：

  10.1021/jm051205r

文献信息

• Design and Synthesis of Novel Biologically Active Thrombin Receptor Non-Peptide Mimetics Based on the Pharmacophoric Cluster Phe/Arg/NH₂ of the Ser₄₂-Phe-Leu-Leu-Arg₄₆ Motif Sequence:  Platelet Aggregation and Relaxant Activities
  作者：Kostas Alexopoulos、Panagiotis Fatseas、Euthemia Melissari、Demetrios Vlahakos、Panagiota Roumelioti、Thomas Mavromoustakos、Stefan Mihailescu、Maria Christina Paredes-Carbajal、Dieter Mascher、John Matsoukas

  DOI：10.1021/jm031080v

  日期：2004.6.1

  The identification of the thrombin receptor has promoted the interest for the development of new therapeutic agents capable of selectively inhibiting unwanted biological effects of thrombin on various cell types. In this study we have designed and synthesized two series of new thrombin receptor antagonists based on the thrombin receptor motif sequence S42FLLR46, one possessing two (Phe/Arg) pharmacophoric groups and the other possessing three (Phe/Arg/NH2). N-(6-Guanidohexanoyl)-N'-(phenylacetyl)piperazine (1), N-(phenylacetyl)-4-(6-guanidohexanoylamidomethyl)piperidine (2), and N-(phenylacetyl)-3-(6-guanidohexanoylamido)pyrrolidine (3) (group A) carry the two pharmacophoric side chains of Phe and Arg residues incorporated on three different templates (piperazine, 4-aminomethylpiperidine, and 3-aminopyrrolidine). Compounds with three pharmacophoric groups (group B) were built similarly to group A using the same templates with the addition of an extra methylamino group leading to (S)-N-(6-guanidohexanoyl)-N'-(2-amino-3-phenylpropionyl)piperazine (4), (S)-N-(2-amino-3-phenylpropionyl)-4-(6-guanidohexanoylamidomethyl)piperidine (5), and (S)-N-(2-amino-3-phenylpropionyl)-3-(6-guanidohexanoylamido)pyrrolidine (6). Compounds were able to inhibit thrombin-induced human platelet activation even at low concentrations. In particular, among compounds in group A, compound 3 was found to be the most powerful thrombin receptor activation inhibitor, showing an IC50 of approximately 0.11 mM on platelet aggregation assay. Among compounds in group B, compound 4 was the most powerful to inhibit thrombin-induced platelet aggregation, showing an IC50 of approximately 0.09 mM. All compounds were also found to act as agonists in the rat aorta relaxation assay. Interestingly, the order or potency of these compounds as agonists of the endothelial thrombin receptor was the inverse of the order of potency of the same compounds as antagonists of the platelet thrombin receptor. Such compounds that are causing vasodilation while simultaneously inhibiting platelet aggregation would be very useful in preventing the installation of atherosclerotic lesions and deserve further investigation as potential drugs for treating cardiovascular diseases. The above findings coupled with computational analysis molecular dynamics experiments support also our hypothesis that a cluster of phenyl, guanidino, and amino groups is responsible for thrombin receptor triggering and activation.