41186-03-2Relevant articles and documents
Synthesis, in vitro cytotoxicity and biological evaluation of twenty novel 1,3-benzenedisulfonyl piperazines as antiplatelet agents
Liu, Xiu-jie,Wang, Yan,Wang, Xiao,Zhang, Zhi-hao
, (2021/09/10)
In order to discover antiplatelet drug with novel structure and expand our research scope, total twenty 1,3-benzenedisulfonyl piperazines, were designed and synthesized. These target compounds were divided into two series, namely 4-methoxy-1,3-benzenedisulfonyl piperazines of series 1 and 4-ethoxy-1,3-benzenedisulfonyl piperazines of series 2. With adenosine diphosphate (ADP), arachidonic acid (AA) and collagen as inducers, respectively, the Born turbidimetric method was used to screen the antiplatelet activity in vitro of all target compounds at a concentration of 1.3 μM, with aspirin and picotamide as positive control drugs. And of which, the activities of five compounds for collagen were higher than both picotamide and aspirin. In ADP or AA channel, compounds with an inhibition rate greater than 33% were selected, and their corresponding IC50 values were obtained. According to the IC50, the in vitro activity of one compound for ADP was higher than picotamide, and for AA, two compounds were higher than two positive control drugs and other two compounds only higher than or equal to aspirin. The preliminary analysis of the structure-activity relationship of the target compounds involved in this study was completed. Further, eight compounds exhibiting higher activity in one or two test channels, were subjected to cytotoxicity test on mouse fibroblasts (L929) by CCK-8 method. The in vitro cytotoxicity of most test compounds showed less than or same to control drug picotamide at 10 μM, but at the higher concentration of 100 μM, merely two compounds exhibited higher cell survival rate than that of picotamide. In addition, compound N1,N3-di(4-ethoxy-1,3-phenylenedisulfonyl)bis(1-(m-tolyl)piperazine), which is delivery activity in the three test channels, and another compound N1,N3–di(4-methoxy-1,3-phenylenedisulfonyl)bis(1-(m-tolyl)piperazine), which has the lowest cytotoxic in vitro compound among series 1 and series 2, respectively, are found and selected for simulation analysis as two most likely to dock with the receptor P2Y12. Each of synthesized compounds in silico molecular property and ADME (absorption, distribution, metabolism and excretion) are predicted by using Molinspiration property engine v2018.10 and PreADMET online servers, respectively. Compared with other series of compounds in the previous stage, the two series compounds obtained after the introduction of piperazinyl have a similar in vitro activity.
MONOACYLGLYCEROL LIPASE INHIBITORS
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Paragraph 0111-0112; 0141; 0153-0154; 0157-0158, (2021/09/09)
Provided are compounds of formula (I), or a pharmaceutically acceptable salt or solvate thereof: Also provided are compositions comprising compounds of formula (I). The compounds and compositions are also provided for use as medicaments, for example as medicaments useful in the treatment of a condition modulated by monoacylglycerol lipase (MAGL). Also provided are the use of compounds and compositions for the inhibition of monoacylglycerol lipase (MAGL).
ANTI-PAIN COMPOUND AND PREPARATION METHOD THEREFOR
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Paragraph 0071-0073, (2020/11/23)
Disclosed are a compound represented by the general Formula (I), or a stereisomer, tautomer, derivative, prodrug or pharmaceutically acceptable salt thereof, and a method for preparing the compound and use of the compound in manufacture of a medicament for treating a neuropathic pain and/or neuropathic pain syndrome or a medicament for combating an inflammation: wherein R1 is selected from hydrogen, halogen, alkyl, cyano and haloalkyl, R2 and R3 are independently selected from hydrogen, halogen, alkyl, haloalkyl and nitro, and R1, R2 and R3 are not hydrogen at the same time; furthermore, when either R2 or R3 is nitro or halogen, the other two of R1, R2 and R3 are not hydrogen at the same time. The compound has good effects in treating a neuropathic pain and/or neuropathic pain syndrome and good effects in combating an inflammation, and has not side effects such as addiction.
Heteroaromatic acetamide derivative, preparation and applications thereof
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Paragraph 0030-0031; 0035, (2019/11/04)
The present invention provides a heteroaromatic acetamide derivative, a preparation and applications thereof, wherein the derivative comprises a pharmaceutically acceptable salt and/or a solvate thereof. According to the present invention, the experiment results prove that the heteroaromatic acetamide derivative can specifically bind to transient receptor potential ankyrin 1 (TRPA1) and inhibit orreduce the activity of TRPA1, and can be used for treating diseases mediated by TRPA1; and the inhibitor of the present invention further comprises a pharmaceutical composition of the compound, and amethods for preparing the compounds. The derivative has a general formula defined in the specification.
Design, synthesis, and biological evaluation of structurally constrained hybrid analogues containing ropinirole moiety as a novel class of potent and selective dopamine D3 receptor ligands
Zhou, Benhua,Hong, Kwon Ho,Ji, Min,Cai, Jin
, p. 1597 - 1609 (2018/07/31)
Two series of hybrid analogues were designed, synthesized, and evaluated as a novel class of selective ligands for the dopamine D3 receptor. Binding affinities of target compounds were determined (using the method of radioligand binding assay). Compared to comparator agent BP897, compounds 2a and 2c were found to demonstrate a considerable binding affinity and selectivity for D3 receptor, and especially compound 2h was similarly potent and more selective D3R ligand than BP897, a positive reference. Thus, they may provide valuable information for the discovery and development of highly potent dopamine D3 receptor ligands with outstanding selectivity.
Synthesis of novel piperazine phosphoramidate analogues of 2-arylquinolones
Qu, Zhibo,Chen, Xiaolan,Qu, Lingbo,Yuan, Jinwei,Li, Huina,Zhao, Yufen
experimental part, p. 1516 - 1520 (2010/09/04)
A series of novel piperazine phosphoramidate derivatives of 2-arylquinolones were synthesized to improve their physicochemical and biological properties through a facile phosphorylating reaction. Their structures were elucidated by NMR, ESI MS, and HRMS. Copyright Taylor & Francis Group, LLC.
Nickel-catalysed selective N-arylation or N,N′-diarylation of secondary diamines
Brenner, Eric,Schneider, Rapha?l,Fort, Yves
, p. 6913 - 6924 (2007/10/03)
The selective synthesis of N-aryl or N,N′-diaryl piperazines and trimethylene(bis)piperidines from the corresponding diamines and aryl chlorides using a catalyst combination of Ni(0) associated to 2,2′-bipyridine is described. The Ni/2,2′-bipyridine catalyst is also effective for the sequential arylation of piperazine. The preparation of novel and unsymmetrical 1,4-diaryl piperazines is reported.
Nickel-mediated amination chemistry. Part 2: Selective N-arylation or N,N'-diarylation of piperazine
Brenner, Eric,Schneider, Rapha?l,Fort, Yves
, p. 2881 - 2884 (2007/10/03)
The 2,2'-bipyridine liganded Ni catalyst has revealed a good selectivity in the mono arylation of piperazine starting from aryl chlorides allowing a selective and efficient synthesis of N-arylpiperazines using stoichiometric amounts of reagents. The preparation of N,N'-diaryl substituted piperazines is also described. (C) 2000 Elsevier Science Ltd.
Microwave assisted rapid synthesis of 1-arylpiperazines
Jaisinghani, Harsha G.,Chowdhury, Boudhayan Roy,Khadilkar
, p. 1175 - 1178 (2007/10/03)
1-Arylpiperazines, an important class of compounds were synthesized rapidly under Microwave irradiation from diethanolamine and substituted anilines using Pollard's method of synthesis. The yields obtained were comparable with the conventional yields and drastic reduction in reaction time was observed.
Synthesis of N-arylpiperazines from aryl halides and piperazine under a palladium tri-tert-butylphosphine catalyst
Nishiyama, Masakazu,Yamamoto, Toshihide,Koie, Yasuyuki
, p. 617 - 620 (2007/10/03)
A Pd/P(t-Bu), catalyst system has revealed very high activity and selectivity for the amination of N-(hetero)aryl halides with unprotected piperazine. A wide variety of N-(hetero)arylpiperazines could be prepared using this catalyst. Turnover numbers up to 6400mol/mol have been obtained.
