5-(2-azidoethyl)-4-methylthiazole | 153805-36-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 5-(2-azidoethyl)-4-methylthiazole
• 英文别名: 5-(2-Azidoethyl)-4-methyl-1,3-thiazole
• CAS: 153805-36-8
• 化学式: C₆H₈N₄S
• 分子量: 168.222
• InChiKey: OGMZROQNZDNMTQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  11
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  55.5
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  5-(2-azidoethyl)-4-methylthiazole 在 Lindlar's catalyst 氢气 作用下， 以 甲醇 为溶剂， 反应 2.5h， 以97%的产率得到2-(4-甲基噻唑-5-基)乙胺
  参考文献：
  名称：

  Evaluation of a vitamin-cloaking strategy for oligopeptide therapeutics: biotinylated HIV-1 protease inhibitors

  摘要：

  The outstanding limitations to the oligopeptide as a therapeutic agent are poor oral availability and rapid biliary clearance. To address these concerns a series of eight peptidic HIV-1 protease inhibitors containing the structural segment of the vitamin biotin have been prepared. These have been evaluated with regard to the hypothesis that this vitamin would cloak the peptidic character of these oligopeptides, and thus impart to these inhibitors the potential for absorption and distribution via biotin transporters and receptors. By iterative optimization about a -Chal psi[CH- (OH)CH(OH)]Val- core inhibitory insert, three particularly potent inhibitors (K-i less than or equal to 10 nM) of the HIV-1 protease were obtained. Although excellent cell culture antiviral activity is observed for other peptidic protease inhibitors of comparable affinity, none in this series exhibited satisfactory antiviral activity. This failure is-attributed to the incompatibility of the hydrophilic and hydrogen-bonding biotin segment, with the facile membrane permeability and intracellular access presumably required for antiviral activity. The ability of the biotin to cloak the peptide, and thus render the overall appearance of the conjugate as that of a vitamin, was evaluated. Four of this series were evaluated for recognition by the Caco-2 cell intestinal biotin transporter, None inhibited competitively biotin uptake, indicating a lack of recognition. A vitamin may bind to a specific protein carrier, and thus attain an improved serum profile (by resistance to biliary clearance) and advantageous delivery to cells. Therefore, the serum concentrations of three were evaluated following an iv bolus in a rat model for serum clearance. One of the three protease inhibitors (L-idonamide, 6-cyclohexyl-2,5,6-trideoxy-2-(1-methylethyl)-5-[[3-methyl-1-oxo-2-[[5-(hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl)-1-oxopentyl]amino]butyl]amino]-N-[2-methyl-1-[[(2-pyridinylmethyl)amino] carbonyl]butyl]-, [3aS-[3a alpha,4 beta(1R*,2R*;3R*),6a alpha]]-) sustained a more than 5-fold increase in serum concentration at all time points relative to the benchmark structure. The remaining two had serum concentrations at least equal to the benchmark, suggestive of improved resistance to clearance. One(L-idonamide, 6-cyclohexyl-2,5,6-trideoxy-5-[[2-[[5-(hexahydro-2-oxo-1H-thieno-[3,4-d]imidazol-4-yl)pentyl]thio]benzoyl]amino]-2-(1-methylethyl)-N-[2-methyl-1-[[(2-pyridinyl- methyl)amino]carbonyl]butyl]-, [3aS-[3a alpha,4 beta(1R*,2R*),6a alpha]]-) was prepared as a complex with the biotin-binding protein avidin. Avidin may resemble an endogenous serum biotin carrier protein. The antiviral activity (evaluated in an H9-HTLV(IIIB) acute HIV-1 infection assay) of the inhibitor and the avidin complex was identical. This suggests that the avidin-inhibitor complex is capable of cell internalization. Although the weak antiviral activity of these biotinylated inhibitors precludes consideration as practical HIV therapeutics, the overall data remain suggestive of vitamin cloaking of oligopeptides as a strategy of potential value.

  DOI：

  10.1021/jm00028a013
• 作为产物：
  描述：

  5-(2-bromoethyl)-4-methylthiazole 在 sodium azide 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 以98%的产率得到5-(2-azidoethyl)-4-methylthiazole
  参考文献：
  名称：

  New Bis-thiazolium Analogues as Potential Antimalarial Agents: Design, Synthesis, and Biological Evaluation

  摘要：

  Bis-thiazolium salts are able to inhibit phosphatidylcholine biosynthesis in Plasmodium and to block parasite proliferation in the low nanomolar range. However, due to their physicochemical properties (i.e., permanent cationic charges, the flexibility, and lipophilic character of the alkyl chain), the oral bioavailability of these compounds is low. New series of bis-thiazolium-based drugs have been designed to overcome this drawback. They feature linker rigidification via the introduction of aromatic rings and/or a decrease in the overall lipophilicity through the introduction of heteroatoms. On the basis of the structure-activity relationships, a few of the promising compounds (9, 10, and 11) were found to exhibit potent antimalarial in vitro and in vivo activities (EC50 < 10 nM and ED50 ip < 0.7 mg/kg).

  DOI：

  10.1021/jm3014585

文献信息

• Design and Synthesis of Neuroprotective Methylthiazoles and Modification as NO-Chimeras for Neurodegenerative Therapy
  作者：Zhihui Qin、Jia Luo、Lawren VandeVrede、Ehsan Tavassoli、Mauro Fa’、Andrew F. Teich、Ottavio Arancio、Gregory R. J. Thatcher

  DOI：10.1021/jm300353r

  日期：2012.8.9

  Learning and memory deficits in Alzheimer’s disease (AD) result from synaptic failure and neuronal loss, the latter caused in part by excitotoxicity and oxidative stress. A therapeutic approach is described that uses NO-chimeras directed at restoration of both synaptic function and neuroprotection. 4-Methylthiazole (MZ) derivatives were synthesized, based upon a lead neuroprotective pharmacophore acting

  阿尔茨海默病 (AD) 的学习和记忆缺陷由突触衰竭和神经元丢失引起，后者部分由兴奋性毒性和氧化应激引起。描述了一种治疗方法，它使用 NO 嵌合体来修复突触功能和神经保护。合成了 4-甲基噻唑 (MZ) 衍生物，基于部分由 GABA A起作用的先导神经保护药效团受体增强。分析了 MZ 衍生物对初级神经元的保护作用，使其免受氧-葡萄糖剥夺和兴奋性毒性的影响。选定的神经保护衍生物被纳入 NO 嵌合体前药，创造了诺美噻唑。为了提供诺美噻唑药物类别的概念证明，对选定的例子进行了分析，以恢复 AD 转基因小鼠海马切片中的突触功能，逆转认知缺陷，以及前药及其神经保护性 MZ 代谢物的脑生物利用度。总之，分析数据表明这些嵌合诺美噻唑可用于治疗神经退行性疾病的多种成分，例如 AD。
• Rapid Discovery of Highly Potent and Selective Inhibitors of Histone Deacetylase 8 Using Click Chemistry to Generate Candidate Libraries
  作者：Takayoshi Suzuki、Yosuke Ota、Masaki Ri、Masashige Bando、Aogu Gotoh、Yukihiro Itoh、Hiroki Tsumoto、Prima R. Tatum、Tamio Mizukami、Hidehiko Nakagawa、Shinsuke Iida、Ryuzo Ueda、Katsuhiko Shirahige、Naoki Miyata

  DOI：10.1021/jm300837y

  日期：2012.11.26

  μM), which was more potent than PCI-34058 (6) (IC50 = 0.31 μM), a known HDAC8 inhibitor. Molecular modeling suggested that the phenylthiomethyl group of C149 binds to a unique hydrophobic pocket of HDAC8, and the orientation of the phenylthiomethyl and hydroxamate moieties (fixed by the triazole moiety) is important for the potency and selectivity. The inhibitors caused selective acetylation of cohesin

  为了找到HDAC8选择性抑制剂，我们设计了一个HDAC抑制剂候选物库，每个候选物均包含一个与活性位点锌离子配位的锌结合基团，并通过三唑部分连接至一个与帽沿边缘上的残基相互作用的加帽结构活动站点。这些化合物通过点击化学合成。筛选鉴定出的HDAC8选择性抑制剂包括C149（IC 50 = 0.070μM），其比已知的HDAC8抑制剂PCI-34058（6）（IC 50 = 0.31μM）更有效。分子建模表明，C149的苯硫基甲基结合到HDAC8的独特疏水口袋，并且苯硫甲基和异羟肟酸酯部分（由三唑部分固定）的方向对于效价和选择性很重要。抑制剂引起细胞内黏附素的选择性乙酰化，并对T细胞淋巴瘤和神经母细胞瘤细胞产生生长抑制作用（GI 50 = 3–80μM）。这些发现表明，HDAC8-选择性抑制剂具有作为抗癌药的潜力。
• Identification of novel SIRT2-selective inhibitors using a click chemistry approach
  作者：Prima R. Tatum、Hideyuki Sawada、Yosuke Ota、Yukihiro Itoh、Peng Zhan、Naoya Ieda、Hidehiko Nakagawa、Naoki Miyata、Takayoshi Suzuki

  DOI：10.1016/j.bmcl.2014.03.026

  日期：2014.4

  A series of 114 SIRT inhibitor candidates was assembled using 'click chemistry', by reacting two alkynes bearing 2-anilinobenzamide pharmacophore with 57 azide building blocks in the presence of Cu( I) catalyst. Screening identified two SIRT2-selective inhibitors, which were more SIRT2-selective than AGK2, a known SIRT2 inhibitor. These findings will be useful for further development of SIRT2-selective inhibitors. (C) 2014 Elsevier Ltd. All rights reserved.
• COMPOUNDS AND METHODS OF TREATING BRAIN DISORDERS
  申请人：Thatcher Gregory R.J.

  公开号：US20130131099A1

  公开（公告）日：2013-05-23

  Nitrated and non-nitrated compounds capable of protecting brain tissue from injury and useful as therapeutic agents to treat neurodegenerative diseases and conditions are disclosed. Methods of using the compounds in therapeutic treatments, and methods of preparing the compounds, also are disclosed.
• US8957086B2
  申请人：——

  公开号：US8957086B2

  公开（公告）日：2015-02-17