Discovery of novel tetrahydro-pyrazolo [4,3-c] pyridines for the treatment of neuropathic pain: Synthesis and neuropharmacology
摘要:
We disclose the discovery of a novel series of tetrahydropyrido-pyrazoles that are potent inhibitors of tumour necrosis factor-alpha (TNF-alpha), nitric oxide and cannabinoid receptor subtype 1 (CBI). We report herein the synthesis and neuropharmacological screening results of the titled compounds in two acute pain and two neuropathic pain models in rodents. Particularly the analogue N-(4-bromophenyl)-3-tertbutyl-5-ethyl-4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridine-1-carboxamide (8a) exhibited pronounced acute antinociceptive efficacy, also being effective in chronic constriction injury (ED50 = 23.8 mg/kg) and partial sciatic nerve injury (ED50 = 29.0 mg/kg) models with CB receptor activity (IC50 = 49.6 nM) and inhibitory effect on TNF-alpha (86.4% inhibition at 100 mg/kg). These results suggest the importance of the development of this lead as multi-targeted treatment strategy for neuropathic pain. (C) 2013 Elsevier Masson SAS. All rights reserved.
EGA 1通过抑制水泡运输来防止多种病毒和细菌毒素进入哺乳动物细胞。1的细胞靶标是未知的,进行了结构-活性关系研究以开发用于靶标鉴定的策略。鉴定出具有中纳米分子效力的化合物(2),并合成了三个光亲和标记(3-5)。对于该系列,在获得成功的光标记事件方面,苯叠氮基部分的预期光化学是比光探针的IC50更重要的因素。虽然3是该系列中最有效的可逆抑制剂,但在紫外线照射后,它没有为细胞提供抗炭疽致死毒素(LT)的保护。相反,在标准分析中生物活性较弱的5
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A series of 3-substituted-thiochroman-4-one semicarbazone derivatives were designed based on the
bioisosterism and combination principle in drug design. The target compounds were prepared from 3-substitutedthiochroman-
4-one (1) and 4-substituted-semicarbazides( 2), their structures were confirmed by MS and 1H NMR. The
antifungal assay was carried out in vitro by twofold dilution. The result shows that all the compounds are of antifungal
activities against the tested fungi at different levels.
根据药物设计中的生物异构和组合原理,设计了一系列 3-取代-硫杂苯并吡喃-4-酮半咔唑酮衍生物。目标化合物由 3-取代的二氢苯并二氢吡喃-4-酮(1)和 4-取代的半咔唑(2)制备而成,并通过 MS 和 1H NMR 确认了它们的结构。通过两倍稀释法在体外进行了抗真菌试验。结果表明,所有化合物都对受试真菌具有不同程度的抗真菌活性。