6-chloro-3-isopropyl[1,2,4]triazolo[3,4-a]phthalazine

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氮杂萘
• 英文名称: 6-chloro-3-isopropyl[1,2,4]triazolo[3,4-a]phthalazine
• 英文别名: 6-Chloro-3-propan-2-yl-[1,2,4]triazolo[3,4-a]phthalazine；6-chloro-3-propan-2-yl-[1,2,4]triazolo[3,4-a]phthalazine
• 化学式: C₁₂H₁₁ClN₄
• 分子量: 246.699
• InChiKey: XYLSYLQQFDJNPO-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  17
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  43.1
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  6-chloro-3-isopropyl[1,2,4]triazolo[3,4-a]phthalazine 在 四丁基氟化铵 、 三乙酰氧基硼氢化钠 、 戴斯-马丁氧化剂 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 、 二氯甲烷 、 1,2-二氯乙烷 、 N,N-二甲基甲酰胺 为溶剂， 生成 N-[(6-{[(3-isopropyl[1,2,4]triazolo[3,4-a]phthalazin-6-yl)oxy]methyl}pyridin-2-yl)methyl]-2-phenylethanamine
  参考文献：
  名称：

  Identification and synthesis of [1,2,4]triazolo[3,4-a]phthalazine derivatives as high-affinity ligands to the α2δ-1 subunit of voltage gated calcium channel

  摘要：

  We have identified and synthesized a series of [1,2,4]triazolo[3,4-a]phthalazine derivatives as high-affinity ligands to alpha(2)delta-1 subunit of voltage gated calcium channels. Structure-activity relationship studies directed toward improving the potency and physical properties of 2 lead to the discovery of 20 (IC50 = 15 nM) and (S)-22 (IC50 = 30 nM). A potent and selective radioligand, [H-3]-(S)-22 was also synthesized to demonstrate that this ligand binds to the same site as gabapentin. (C) 2004 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2004.03.008
• 作为产物：
  描述：

  1-chloro-4-hydrazinophthalazine hydrochloride 、 异丁酰氯 在 三乙胺 作用下， 以 乙二醇二甲醚 为溶剂， 反应 12.0h， 生成 6-chloro-3-isopropyl[1,2,4]triazolo[3,4-a]phthalazine
  参考文献：
  名称：

  [EN] TRIAZOLO-PYRIDAZINE COMPOUNDS AND DERIVATIVES THEREOF USEFUL IN THE TREATMENT OF NEUROPATHIC PAIN
  [FR] COMPOSES DE TRIAZOLO-PYRIDAZINE ET LEURS DERIVES, DESTINES AU TRAITEMENT DE LA DOULEUR NEUROPATHIQUE

  摘要：

  本发明涉及一种在治疗神经病性疼痛中使用三唑吡啶化合物的方法。本发明还涉及在治疗精神和情绪障碍，如精神分裂症、焦虑、抑郁、躁郁症和恐慌，以及在治疗疼痛、帕金森病、认知功能障碍、癫痫、昼夜节律和睡眠障碍（如倒班引起的睡眠障碍和时差反应）、药物成瘾、药物滥用、药物戒断和其他疾病中使用三唑吡啶化合物的方法。本发明还涉及选择性结合到Ca通道α2δ-1亚基的新型三唑吡啶化合物。

  公开号：

  WO2005041971A1

文献信息

• 3-Phenyl-6-(2-pyridyl)methyloxy-1,2,4-triazolo[3,4-<i>a</i>]phthalazines and Analogues:  High-Affinity γ-Aminobutyric Acid-A Benzodiazepine Receptor Ligands with α2, α3, and α5-Subtype Binding Selectivity over α1
  作者：Robert W. Carling、Kevin W. Moore、Leslie J. Street、Deborah Wild、Catherine Isted、Paul D. Leeson、Steven Thomas、Desmond O'Connor、Ruth M. McKernan、Katherine Quirk、Susan M. Cook、John R. Atack、Keith A. Wafford、Sally A. Thompson、Gerard R. Dawson、Pushpinder Ferris、José L. Castro

  DOI：10.1021/jm031020p

  日期：2004.3.1

  Studies with our screening lead 5 and the literature compound 6 led to the identification of 6-benzyloxy-3-(4-methoxy)phenyl-1,2,4-triazolo[3,4-a]phthalazine 8 as a ligand with binding selectivity for the gamma-aminobutyric acid-A (GABA-A) alpha3- and alpha5-containing receptor subtypes over the GABA-A alpha1 subtype (K-i: alpha2 = 850 nM, alpha3 = 170 nM, alpha5 = 72 nM, alpha1 = 1400 nM). Early optimization studies identified the close analogue 10 (Ki: alpha2 = 16 nM, alpha3 = 41 nM, alpha5 = 38 nM, alpha1 = 280 nM) as a suitable lead for further study. High-affinity ligands were identified by replacing the 6-benzyloxy group of compound 10 with 2-pyridylmethoxy (compound 29), but binding selectivity was not enhanced (K-i: alpha2 = 1.7 nM, alpha3 = 0.71 nM, alpha5 = 0.33 nM, alpha1 = 2.7 nM). Furthermore, on evaluation in xenopus oocytes,(22) 29 was discovered to be a weak to moderate inverse agonist at all four receptor subtypes (alpha1, -7%; alpha2, -5%; alpha3, -16%; alpha5, -5%). Replacement of the 3-phenyl group of 29 with alternatives led to reduced affinity, and smaller 3-substituents led to reduced efficacy. Methyl substitution of the benzo-fused ring of 29 at the 7-, 8-, and 10-positions resulted in increased efficacy although selectivity was abolished. Increased efficacy and retention of selectivity for alpha3 over alpha1 was achieved with the 7,8,9,10-tetrahydro-(7,10-ethano)-phthalazine 62. Compound 62 is currently one of the most binding selective GABA-A alpha3-benzodiazepine-site partial agonists known, and although its selectivity is limited, its good pharmacokinetic profile in the rat (33% oral bioavailability after a 3 mg/kg dose, reaching a peak plasma concentration of 179 ng/mL; half-life of I h) made it a useful pharmacological tool to explore the effect of a GABA-A alpha2/alpha3 agonist in vivo.