对硝基菲林-α | 389850-21-9

• 中文名称: 对硝基菲林-α
• 中文别名: 1-（4-硝基苯基）-2-（4,5,6,7-四氢-2-亚氨基-3（2H）-苯并噻唑基）氢溴酸乙酮
• 英文名称: 1-(4-nitrophenyl)-2-(4,5,6,7-tetrahydro-2-imino-3(2H)-benzothiazolyl)ethanone hydrobromide
• 英文别名: p-nitro-Pifithrin-alpha；2-(2-imino-4,5,6,7-tetrahydro-1,3-benzothiazol-3-yl)-1-(4-nitrophenyl)ethanone;hydrobromide
• CAS: 389850-21-9
• 化学式: BrH*C₁₅H₁₅N₃O₃S
• 分子量: 398.28
• InChiKey: NXPCMOGORSWOLH-UHFFFAOYSA-N

物化性质

• 熔点：
  239-240 °C(Solv: methanol (67-56-1); ethyl acetate (141-78-6))
• 溶解度：
  溶于DMSO或乙醇

计算性质

• 辛醇/水分配系数(LogP)：
  -0.71
• 重原子数：
  23
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  121
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  对硝基菲林-α 在 羟胺 作用下， 以 二氯甲烷 为溶剂， 反应 3.0h， 以35%的产率得到1-(4-nitrophenyl)-2-(4,5,6,7-tetrahydro-2-imino-3(2H)-benzothiazolyl)ethanone oxime hydrobromide
  参考文献：
  名称：

  Imino-tetrahydro-benzothiazole Derivatives as p53 Inhibitors:  Discovery of a Highly Potent in Vivo Inhibitor and Its Action Mechanism

  摘要：

  Several neurological disorders manifest symptoms that result from the degeneration and death of specific neurons. p53 is an important modulator of cell death, and its inhibition could be a therapeutic approach to several neuropathologies. Here, we report the design, synthesis, and biological evaluation of novel p53 inhibitors based on the imino-tetrahydrobenzothiazole scaffold. By performing studies on their mechanism of action, we find that cyclic analogue 4b and its open precursor 2b are more potent than pifithrin-alpha (PFT-R), which is known to block p53 pro-apoptotic activity in vitro and in vivo without acting on other proapoptotic pathways. Using spectroscopic methods, we also demonstrate that open form 2b is more stable than 4b in biological media. Compound 2b is converted into its corresponding active cyclic form through an intramolecular dehydration process and was found two log values more active in vivo than PFT-alpha. Thus, 2b can be considered as a new prodrug prototype that prevents in vivo p53-triggered cell death in several neuropathologies and possibly reduces cancer therapy side effects.

  DOI：

  10.1021/jm060318n
• 作为产物：
  描述：

  环己酮 、 alkaline earth salt of/the/ methylsulfuric acid 在 碘 作用下， 以 甲苯 为溶剂， 反应 60.0h， 生成 对硝基菲林-α
  参考文献：
  名称：

  Novel cyclized Pifithrin-α p53 inactivators: synthesis and biological studies

  摘要：

  Starting from various cyclic or bicyclic ketones, we have synthesized novel Pifithrin-a analogues bearing different methyl substituted phenyl ketone groups at the N-3-position of the 2-iminothiazole heterocycle. From stability studies in a biological medium as well as under specific chemical conditions, we have shown by NMR techniques that through a dehydration process, some derivatives can generate their corresponding cyclized analogues. All of the new analogues, Pifithrin-like and polycyclic dehydrated derivatives were assessed for their p53 inactivation potency by measuring survival of cortical neurons, whose death was induced by the DNA-damaging agent etoposide. Pifithrin-alpha like 2f as well as the cyclic dehydrated 6b analogue were found to be one log more potent p53 inactivators than reference compound Pft-alpha, with EC50 values ranging around 30 nM. These results support the finding that p53 inactivation by Pft-alpha analogues could be also due to the presence of the cyclic dehydrated Pft-alpha forms, generated in situ in the biological assay incubation medium. (c) 2005 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2005.01.075

文献信息

• Inhibitors of Apoptosis in Lymphocytes:  Synthesis and Biological Evaluation of Compounds Related to Pifithrin-α
  作者：Sylvie D. Barchéchath、Rommel I. Tawatao、Maripat Corr、Dennis A. Carson、Howard B. Cottam

  DOI：10.1021/jm0502034

  日期：2005.10.1

  39 were more protective than 39, while the aromatic analogues of 1 were not active. Compound 19 containing a pyrrolidinyl substituent on the phenyl ring provided potent antiapoptotic activity (EC50 of 1.31 microM compared to 4.16 microM for 1). Modification of aromatic 39 with a pyrrolidinyl para substituent (compound 60) enhanced the activity, lowering the EC50 to 0.35 microM. Also, 60 provided significant

  化学性保护细胞免受毒素或电离辐射诱导的细胞凋亡可能对生物防御和急性损伤的治疗很重要。我们描述了一系列小的杂环，包括稠合的苯并噻唑，苯并咪唑和相关化合物，它们消除了地塞米松和γ射线诱导的胸腺细胞凋亡。为了优化以前报道的pifithrin-alpha（PFT-alpha，1）的保护活性，合成了该衍生物和相应的闭环咪唑并苯并噻唑（IBT，39）的各种衍生物和类似物。39的芳香族类似物比39更具保护性，而1的芳香族类似物则没有活性。在苯环上包含吡咯烷基取代基的化合物19提供了有效的抗凋亡活性（EC50为1.31 microM，而4的EC16为4.16 microM）。用吡咯烷基对位取代基（化合物60）修饰芳香族化合物39可增强活性，将EC50降低至0.35 microM。同样，60预期也提供了有效的保护，以抵抗伽马射线辐射诱导的细胞凋亡。化合物19和60对于潜在的临床开发可能很有希望。
• Novel p53 Inactivators with Neuroprotective Action:  Syntheses and Pharmacological Evaluation of 2-Imino-2,3,4,5,6,7-hexahydrobenzothiazole and 2-Imino-2,3,4,5,6,7-hexahydrobenzoxazole Derivatives
  作者：Xiaoxiang Zhu、Qian-sheng Yu、Roy G. Cutler、Carsten W. Culmsee、Harold W. Holloway、Debomoy K. Lahiri、Mark P. Mattson、Nigel H. Greig

  DOI：10.1021/jm020044d

  日期：2002.11.1

  feature of several neurodegenerative disorders, including Alzheimer's disease, 2 and novel analogues (3-16) were synthesized to (i) assess the value of tetrahydrobenzothiazole analogues as neuroprotective agents and (ii) define the structural requirements for p53 inactivation. Not only did 2 exhibit neuroprotective activity in both tissue culture and in vivo stroke models but also compounds 6, 7, 10, 13

  肿瘤抑制蛋白p53是一种细胞内蛋白，在生化级联反应中至关重要，可通过凋亡导致细胞死亡。最近的研究确定了四氢苯并噻唑类似物pifithrin-alpha（2）作为p53抑制剂，可有效保护神经元细胞免受各种致命伤害并减少抗癌药物的副作用。由于p53的上调已被描述为包括阿尔茨海默氏病在内的几种神经退行性疾病的共同特征，因此合成了2种和新型类似物（3-16）以（i）评估四氢苯并噻唑类似物作为神经保护剂的价值，以及（ii）定义p53失活的结构要求。不仅2在组织培养和体内中风模型中均表现出神经保护活性，而且化合物6、7、10、13、15
• A convenient one-pot synthesis of thiazol-2-imines: application in the construction of pifithrin analogues
  作者：Siva Murru、C.B. Singh、Veerababurao Kavala、Bhisma K. Patel

  DOI：10.1016/j.tet.2007.11.076

  日期：2008.2

  3-disubstituted thioureas using 1,1′-(ethane-1,2-diyl)dipyridinium bistribromide (EDPBT). Unsymmetrical 1,3-disubstituted thioureas give regioselective products with symmetrical ketones, which are mainly governed by the pKas of NH protons of thiourea, whereas symmetrical 1,3-disubstituted thioureas give regioselective products with symmetrical carbonyl compounds owing to the regioselective bromination of

  首次分离出反应中间体，从而进一步了解了噻唑-2-亚胺的形成机理。反应的第一步需要碱性介质，而第二步是酸介导的E1消除反应。通过使用1,1'-（乙烷-1,2-二基）双吡啶鎓溴化吡啶鎓（EDPBT）将羰基化合物与硫脲和1,3-二取代的硫脲缩合，已实现了有效的一锅合成取代的噻唑-2-亚胺。 ）。不对称的1,3-二取代的硫脲会产生带有对称酮的区域选择性产物，该酮主要由p K a决定。s的是硫脲的NH质子，而对称的1,3-二取代的硫脲由于酮的区域选择性溴化作用而产生具有对称羰基化合物的区域选择性产物。该方法已扩展为在较短的反应时间内以高收率获得新型神经退行性药物候选品菲丝菌素-α类似物。该方法简单，通用，可用于不同的1,3-二取代的硫脲以及一系列羰基化合物。