ethyl 6,7-dihydro-5H-cyclopenta[d]imidazo[2,1-b][1,3]thiazole-2-carboxylate | 349481-42-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: ethyl 6,7-dihydro-5H-cyclopenta[d]imidazo[2,1-b][1,3]thiazole-2-carboxylate
• 英文别名: 2-Bromo-8-(4,4-dimethyl-cyclohexyl)-[1,2,4]triazolo[1,5-a]pyridine；ethyl 7-thia-1,9-diazatricyclo[6.3.0.02,6]undeca-2(6),8,10-triene-10-carboxylate
• CAS: 349481-42-1
• 化学式: C₁₁H₁₂N₂O₂S
• 分子量: 236.294
• InChiKey: AYAYTVULXMUHPF-UHFFFAOYSA-N

物化性质

• 密度：
  1.50±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  16
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.45
• 拓扑面积：
  71.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  ethyl 6,7-dihydro-5H-cyclopenta[d]imidazo[2,1-b][1,3]thiazole-2-carboxylate 在 N-氯代丁二酰亚胺 、 1-羟基苯并三唑 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 lithium hydroxide 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 15.0h， 生成 4-(3-chloro-6,7-dihydro-5H-cyclopenta[d]imidazo[2,1-b]thiazole-2-carbonyl)-1-cyclopentylpiperazin-2-one
  参考文献：
  名称：

  Discovery of Imidazo[2,1-b]thiazole HCV NS4B Inhibitors Exhibiting Synergistic Effect with Other Direct-Acting Antiviral Agents

  摘要：

  The design, synthesis, and SAR studies of novel inhibitors of HCV NS4B based on the imidazo[2,1-b]thiazole scaffold were described. Optimization of potency with respect to genotype 1b resulted in the discovery of two potent leads 26f (EC50 = 16 nM) and 28g (EC50 = 31 nM). The resistance profile studies revealed that 26f and 28g targeted HCV NS4B, more precisely the second amphipathic alpha helix of NS4B (4BAH2). Cross-resistance between our 4BAH2 inhibitors and other direct-acting antiviral agents targeting NS3/4A, NS5A, and NS5B was not observed. For the first time, the synergism of a series of combinations based on 4BAH2 inhibitors was evaluated. The results demonstrated that our 4BAH2 inhibitor 26f was synergistic with NS3/4A inhibitor simeprevir, NS5A inhibitor daclatasvir, and NS5B inhibitor sofosbuvir, and it could also reduce the dose of these drugs at almost all effect levels. Our study suggested that favorable effects could be achieved by combining 4BAH2 inhibitors such as 26f with these approved drugs and that new all-oral antiviral combinations based on 4BAH2 inhibitors were worth developing to supplement or even replace current treatment regimens for curing HCV infection.

  DOI：

  10.1021/jm501934n
• 作为产物：
  描述：

  2-bromocyclopentanone 以 乙醇 、 丁酮 为溶剂， 反应 30.0h， 生成 ethyl 6,7-dihydro-5H-cyclopenta[d]imidazo[2,1-b][1,3]thiazole-2-carboxylate
  参考文献：
  名称：

  Discovery of Imidazo[2,1-b]thiazole HCV NS4B Inhibitors Exhibiting Synergistic Effect with Other Direct-Acting Antiviral Agents

  摘要：

  The design, synthesis, and SAR studies of novel inhibitors of HCV NS4B based on the imidazo[2,1-b]thiazole scaffold were described. Optimization of potency with respect to genotype 1b resulted in the discovery of two potent leads 26f (EC50 = 16 nM) and 28g (EC50 = 31 nM). The resistance profile studies revealed that 26f and 28g targeted HCV NS4B, more precisely the second amphipathic alpha helix of NS4B (4BAH2). Cross-resistance between our 4BAH2 inhibitors and other direct-acting antiviral agents targeting NS3/4A, NS5A, and NS5B was not observed. For the first time, the synergism of a series of combinations based on 4BAH2 inhibitors was evaluated. The results demonstrated that our 4BAH2 inhibitor 26f was synergistic with NS3/4A inhibitor simeprevir, NS5A inhibitor daclatasvir, and NS5B inhibitor sofosbuvir, and it could also reduce the dose of these drugs at almost all effect levels. Our study suggested that favorable effects could be achieved by combining 4BAH2 inhibitors such as 26f with these approved drugs and that new all-oral antiviral combinations based on 4BAH2 inhibitors were worth developing to supplement or even replace current treatment regimens for curing HCV infection.

  DOI：

  10.1021/jm501934n

文献信息

• [EN] HETEROTRICYCLYL 6-ALKYLIDENE-PENEMS AS BetaEpsilonTauAlpha-LACTAMASE INHIBITORS<br/>[FR] DERIVES D'HETEROTRICYCLYL 6-ALKYLIDENE-PENEMES EN TANT QU'INHIBITEURS DE BETA-LACTAMASE
  申请人：WYETH CORP

  公开号：WO2003093280A1

  公开（公告）日：2003-11-13

  The present invention provides a compound of formula I, pharmaceutical compositions and the use thereof for the treatment of bacterial infection or disease in a patient in need thereof.

  本发明提供了一种I式化合物，药物组合物以及其用于治疗患有细菌感染或疾病的患者的用途。
• Structure−Activity Relationship of 6-Methylidene Penems Bearing Tricyclic Heterocycles as Broad-Spectrum β-Lactamase Inhibitors:  Crystallographic Structures Show Unexpected Binding of 1,4-Thiazepine Intermediates
  作者：Aranapakam M. Venkatesan、Yansong Gu、Osvaldo Dos Santos、Takao Abe、Atul Agarwal、Youjun Yang、Peter J. Petersen、William J. Weiss、Tarek S. Mansour、Michiyoshi Nukaga、Andrea M. Hujer、Robert A. Bonomo、James R. Knox

  DOI：10.1021/jm049680x

  日期：2004.12.1

  R and S configurations in the GC1 intermediate. Hydrophobic stacking interactions between the tricyclic C7 substituent and a tyrosine side chain, rather than electrostatic or hydrogen bonding by the C3 carboxylic acid group, dominate in both complexes. The formation of the 1,4- thiazepine ring structures is proposed based on a 7-endo-trig cyclization.

  描述和设计了一系列七个作为新的A类和C类丝氨酸β-内酰胺酶抑制剂的三环6-亚甲基Penems。这些化合物被证明是TEM-1和AmpCβ-内酰胺酶的有效抑制剂，而对B类金属-β-内酰胺酶CcrA的抑制作用则较小。与哌拉西林联合使用时，它们的体外活性增强了来自各种细菌的所有C类抗药性菌株的敏感性。已经建立了A类SHV-1和C类GC1酶与17种丝氨酸结合的反应中间体的晶体结构，分别具有2.0 A和1.4 A的分辨率，并被精制为等于0.163和0.145的R因子。在两个β-内酰胺酶中，都形成了一个七元的1,4-硫氮平环。环中的立体C7原子在SHV-1中间体中具有R构型，在GC1中间体中具有R和S构型。三环C7取代基和酪氨酸侧链之间的疏水堆积相互作用，而不是通过C3羧酸基团的静电或氢键键合，在两种络合物中都占主导地位。基于7-内-trig环化，提出了1，4-硫氮平环结构的形成。
• Tricyclic 6-alkylidene-penem beta-lactamase inhibitors and beta-lactam antibiotic combination: a broad spectrum antibiotic
  申请人：Mansour S. Tarek

  公开号：US20070027130A1

  公开（公告）日：2007-02-01

  The present invention provides a β-lactam antibiotic such as cefepime and a compound of formula I, pharmaceutical compositions and the use thereof for the treatment of bacterial infection or disease in a patient in need thereof.

  本发明提供了β-内酰胺类抗生素，如头孢吡肟以及化合物I的药物组合物，以及其用于治疗患有细菌感染或疾病的患者的用途。
• Tricyclic 6-alkylidene-penems as class-D beta-lactamases inhibitors
  申请人：Mansour Suhayl Tarek

  公开号：US20060276446A1

  公开（公告）日：2006-12-07

  This invention relates to certain tricyclic 6-alkylidene penems which act as a inhibitor of class-D enzymes. β-Lactamases hydrolyze β-lactam antibiotics, and as such serve as the primary cause of bacterial resistance. The compounds of the present invention when combined with β-lactam antibiotics will provide an effective treatment against life threatening bacterial infections. In accordance with the present invention there are provided compounds of formula I which are useful for treatment of bacterial infections having class-D enzymes associated therewith: wherein: One of A and B denotes hydrogen and the other an optionally substituted fused tricyclic heteroaryl group; and X is S or O.

  这项发明涉及某些三环6-烷基亚胺基青霉素，其作为类D酶的抑制剂。β-内酰胺酶水解β-内酰胺类抗生素，因此是细菌抗药性的主要原因。本发明的化合物与β-内酰胺类抗生素结合时，将提供一种有效治疗危及生命的细菌感染的方法。根据本发明，提供了以下公式I的化合物，其用于治疗与类D酶相关的细菌感染：其中：A和B中的一个表示氢，另一个表示可选择取代的融合三环杂芳基团；X为S或O。
• Process for preparing 6-alkylidene penem derivatives
  申请人：Wyeth

  公开号：US20040132708A1

  公开（公告）日：2004-07-08

  The present invention provides a process of making compounds of formula I, which are useful for the treatment of bacterial infection or disease. 1

  本发明提供了一种制备式I化合物的方法，该化合物对治疗细菌感染或疾病有用。