4-methyl-5-propylthiazol-2-amine | 31299-86-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 4-methyl-5-propylthiazol-2-amine
• 英文别名: 2-Amino-4-methyl-5-propyl-thiazol；4-Methyl-5-propyl-1,3-thiazol-2-ylamine；4-methyl-5-propyl-1,3-thiazol-2-amine
• CAS: 31299-86-2
• 化学式: C₇H₁₂N₂S
• 分子量: 156.252
• InChiKey: PZMNTZHFZSFBMY-UHFFFAOYSA-N

物化性质

• 熔点：
  45-45.5 °C
• 沸点：
  90 °C(Press: 0.1 Torr)
• 密度：
  1.115±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  10
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  67.2
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  4-methyl-5-propylthiazol-2-amine 、 3-氯-2-甲基苯磺酰氯 、 生成 3-chloro-2-methyl-N-(4-methyl-5-propyl-1,3-thiazol-2-yl)benzenesulfonamide
  参考文献：
  名称：

  Inhibitors of 11-beta-hydroxy steroid dehydrogenase type 1

  摘要：

  本发明涉及式(I)的化合物，以及包含这些化合物的制药组合物，用于它们的制备过程，以及用于医学和制备对人类11-β-羟基类固醇脱氢酶1型酶起作用的药物的化合物的用途。

  公开号：

  US20030176476A1
• 作为产物：
  描述：

  2-己酮 在 potassium chlorate 、 溴 作用下， 生成 4-methyl-5-propylthiazol-2-amine
  参考文献：
  名称：

  537.消除反应。第一部分：酸催化的酮的烯化和取代反应

  摘要：

  DOI：

  10.1039/jr9510002430

文献信息

• Studies on Acetylenic Compounds. XXII. Ring Closure. (4). New Synthesis of Thiazoles and Imidazole.
  作者：Yasuo Yura

  DOI：10.1248/cpb.10.376

  日期：——

  It was found that the compounds having the general formula RCH(X)-C≡C-R'gave thiazole derivatives by reaction with thiourea. The relationship between the structure of thiazoles and substituent groups was clarified as follows : (1) When R=R'=Ph, 2-amino-4-benzyl-5-phenylthiazole (IId) is obtained, (2) When R=alkyl, R'=H, two kinds of thiazoles are obtained ; and (3) when R=R'=alkyl, thiazole derivative is not obtained. Similarly, propargyl bromide and phenylpropargyl bromide, when reacted with ammonium dithiocarbamate, afforded 2-mercapto-4-methylthiazole (XX) and 2-mercapto-4-benzylthiazole (XXIII), respectively. Further, 2-amino-4-methylimidazole (XXV) was obtained from guanidine and propargyl bromide.

  研究发现，具有通式RCH(X)-C≡C-R'的化合物在反应中与硫脲作用生成噻唑衍生物。噻唑结构和取代基之间的关系阐明如下：(1) 当R=R'=Ph时，获得2-氨基-4-苄基-5-苯基噻唑(IId)；(2) 当R=烷基，R'=H时，获得两种噻唑；(3) 当R=R'=烷基时，不生成噻唑衍生物。同样地，炔丙基溴和苯基炔丙基溴与氨荒酸盐反应，分别得到2-巯基-4-甲基噻唑(XX)和2-巯基-4-苄基噻唑(XXIII)。进一步地，从胍和炔丙基溴获得2-氨基-4-甲基咪唑(XXV)。
• Structure-Activity Relationships of 2-Aminothiazole Derivatives as Inducible Nitric Oxide Synthase Inhibitor
  作者：Shigeo Ueda、Hideo Terauchi、Motoji Kawasaki、Akihiro Yano、Motoharu Ido

  DOI：10.1248/cpb.52.634

  日期：——

  Nitric oxide synthase (NOS) has been divided into two major sub-enzymes, i.e. inducible NOS (iNOS) and constitutive NOS (cNOS). Although nitric oxide (NO) plays an important role as host defense mediator, excessive production of NO by iNOS has been involved in the pathology of many inflammatory diseases. Recently, we reported that the 2-imino-1,3-oxazolidine (1a) weakly inhibits iNOS and that introduction of an alkyl moiety on the oxazolidine ring of 1a enhances the inhibitory activity and selectivity for iNOS. In our search for better iNOS inhibitors, we focused our efforts on the 2-aminothiazole scaffold 3 as it possesses a ring similar to that of 1a. In this study, we evaluated the inhibitory activity of a series of 2-aminothiazole derivatives against both iNOS and neuronal NOS (nNOS). Our results show that introduction of appropriately-sized substituents at the 4- and 5-position of the 2-aminothiazole ring improves the inhibitory activity and selectivity for iNOS. We also found that the selectivity of 5a [5-(1-methyl)ethyl-4-methylthiazol-2-ylamine] and 5b [5-(1,1-dimethyl)ethyl-4-methylthiazol-2-ylamine] for iNOS was similar to that of oxazolidine derivative 1b (4-methyl-5-propyl-2-imino-1,3-oxazolidine) and much higher than that of L-NAME. However, we could not enhance the inhibitory activity against iNOS by introducing an alkyl substituent into the 2-aminothiazole ring as we could in the case of oxazolidine one. On the other hand, introduction of bulky or hydrophilic substituent at any position of the 2-aminothiazole ring remarkably decreased or even abolished the inhibitory activity against NOS.

  一氧化氮合酶（NOS）被分为两种主要的亚酶，即可诱导型一氧化氮合酶（iNOS）和构成型一氧化氮合酶（cNOS）。虽然一氧化氮（NO）在宿主防御中发挥重要作用，但iNOS过量产生NO已涉及许多炎症疾病的病理。最近，我们报告了2-亚氨基-1,3-噁唑烷（1a）对iNOS的抑制作用较弱，并且在1a的噁唑烷环上引入烷基基团可以增强对iNOS的抑制活性和选择性。在寻找更好的iNOS抑制剂时，我们将精力集中在2-氨基噻唑骨架3上，因为它具有类似于1a的环状结构。在本研究中，我们评估了一系列2-氨基噻唑衍生物对iNOS和神经型一氧化氮合酶（nNOS）的抑制活性。结果表明，在2-氨基噻唑环的4位和5位引入适当大小的取代基能显著提高对iNOS的抑制活性和选择性。我们还发现，5a [5-(1-甲基)乙基-4-甲基噻唑-2-胺]和5b [5-(1,1-二甲基)乙基-4-甲基噻唑-2-胺]对iNOS的选择性与噁唑烷衍生物1b（4-甲基-5-丙基-2-亚氨基-1,3-噁唑烷）相似，并且远高于 -NAME。然而，我们未能通过在2-氨基噻唑环上引入烷基取代基来增强对iNOS的抑制活性，正如在噁唑烷的情况下所实现的那样。另一方面，在2-氨基噻唑环的任何位置引入笨重或亲水性取代基显著降低甚至完全消除了对NOS的抑制活性。
• One-pot three-component protocol for the synthesis of substituted 2-aminothiazoles
  作者：Shanshan Guo、Donghong Zhao、Yue Zhu、Yongping Yu、Wenteng Chen、Guolin Zhang

  DOI：10.1080/00397911.2017.1350275

  日期：2017.10.2

  ABSTRACT Substituted 2-aminothiazoles have been synthesized from α-nitro-epoxides, cyanamide, and sodium sulfide through a facile, three-component, and ecofriendly protocol with good to excellent yields. This reaction was achieved at room temperature without any additives. A possible mechanism has also been proposed. GRAPHICAL ABSTRACT

  摘要 由 α-硝基环氧化物、氰胺和硫化钠通过简便、三组分和环保的方案合成了取代的 2-氨基噻唑，收率良好。该反应是在室温下完成的，没有任何添加剂。还提出了一种可能的机制。图形概要
• Efficient and facile strategy to substituted 2-aminothiazoles via ring opening of α-nitroepoxides
  作者：Yue Zhu、Qilin Wang、Haofan Luo、Guolin Zhang、Yongping Yu

  DOI：10.1016/j.tet.2018.09.005

  日期：2018.12

  A novel and efficient reaction has been developed to synthesize a set of substituted 2-aminothiazoles from α-nitroepoxides and ammonium thiocyanate. This reaction could proceed smoothly at mild condition, to afford products for a wide range of substrates with good to excellent yields. A possible mechanism has also been proposed.

  已经开发了一种新颖而有效的反应，以由α-硝基环氧化物和硫氰酸铵合成一组取代的2-氨基噻唑。该反应可以在温和的条件下平稳进行，从而以良好或优异的产率提供用于多种底物的产物。还提出了一种可能的机制。
• Facile, efficient synthesis of polysubstituted thiazoles via α-nitroepoxides and thioureas
  作者：Donghong Zhao、Shanshan Guo、Xiao Guo、Guolin Zhang、Yongping Yu

  DOI：10.1016/j.tet.2016.05.010

  日期：2016.9

  An efficient synthesis of 2,4,5-trisubstituted thiazoles via the reaction of α-nitroepoxides and thioureas under mild conditions has been developed. This reaction proceeded well at room temperature, to afford products in excellent yields for a wide range of substrate, and a possible mechanism has also been proposed.

  已经开发了在温和条件下通过α-硝基环氧化物与硫脲反应有效合成2,4,5-三取代噻唑的方法。该反应在室温下进行得很好，从而为广泛的底物提供了具有优异收率的产物，并且还提出了一种可能的机理。