15532-75-9Relevant articles and documents
A general and convenient synthesis of N-aryl piperazines
Liu, Kevin G.,Robichaud, Albert J.
, p. 7921 - 7922 (2005)
A general and convenient synthesis of N-aryl piperazines from bis(2-chloroethyl)amine hydrochloride and a broad range of anilines in diethylene glycol monomethyl ether is described.
Formation of phenylpiperazines by a novel alumina supported bis-alkylation
Mishani, Eyal,Dence, Carmen S.,McCarthy, Timothy J.,Welch, Michael J.
, p. 319 - 322 (1996)
The phenylpiperazine ring which could not be obtained by reacting aniline derivatives with bis(2-bromoethyl)-N-(ethoxycarbonyl)amine (1a) in a wide spectrum of solvents and temperatures was synthesized rapidly on solid support in high yield. By this approach the potent serotonin agonist TFMPP (2) was synthesized in 40 min. in 80% yield. The time scale of this reaction and the simplicity of the work-up match the requirements for short lived neurological radiopharmaceutical production.
Analysis of amphetamine-type substances and piperazine analogues using desorption electrospray ionisation mass spectrometry
Stojanovska, Natasha,Kelly, Tamsin,Tahtouh, Mark,Beavis, Alison,Fu, Shanlin
, p. 731 - 740 (2014)
RATIONALE: Although amphetamine-type substances (ATS) have been investigated extensively in recent years, scarce data is available on screening tests for piperazine analogues. The need for a universal technique capable of detecting an extensive range of drug compounds becomes increasingly important with the continued emergence of novel drug analogues. METHODS: Desorption electrospray ionisation mass spectrometry (DESI-MS) is a technique that allows examination of compounds in drug materials directly from ambient surfaces. In this study, DESI-MS was utilised in the analysis of ATS including amphetamine (AP), methylamphetamine (MA), 3,4-methylenedioxymethylamphetamine (MDMA), N,N-dimethylamphetamine (DMA), 4-methoxyamphetamine (PMA) and 4-methoxymethylamphetamine (PMMA), and piperazine analogues including 1-benzylpiperazine (BZP), 1-[3-(trifluoromethyl)phenyl]piperazine (TFMPP), 1-(3-chlorophenyl)piperazine (mCPP) and 1-(4-methoxyphenyl)piperazine (MeOPP). Semi-porous polytetrafluoroethylene (PTFE or Teflon) sheets welled with a 3 mm hole punch were used to contain the 2 μL liquid sample (spot size 7 mm 2). RESULTS: The limits of detection (LODs) of these compounds using DESI-MS were determined to be in the range 0.02-2.80 μg/mm2. The intra-day and inter-day precision of the technique were 25% and 33%, respectively. DESI-MS was successful in determining the compound of interest and reaction by-products and impurities in the samples tested (such as 1,4-dibenzylpiperazine in BZP samples) with the exception of those present in trace amounts. The effects of common adulterants on the detectability of MA were evaluated. The addition of magnesium stearate to MA significantly enhanced the signal response. CONCLUSIONS: This work has demonstrated the applicability of DESI-MS in the screening and profiling of MDMA, PMMA, BZP, TFMPP, mCPP, MeOPP as well as other complex mixtures. Copyright
MONOACYLGLYCEROL LIPASE INHIBITORS
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Paragraph 0111-0112; 0141; 0153-0154; 0185-0186, (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).
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.
An efficient silane-promoted nickel-catalyzed amination of aryl and heteroaryl chlorides
Manolikakes, Georg,Gavryushin, Andrei,Knochel, Paul
, p. 1429 - 1434 (2008/04/05)
(Chemical Equation Presented) A new silane-promoted nickel-catalyzed amination of aryl chlorides with 0.5 mol % of Ni(acac)2, 1 mol % of 3,5,6,8-tetrabromo-1,10-phenanthroline, and polymethylhydrosiloxane was developed. A broad range of aryl and heteroaryl chlorides can be coupled with secondary amines and anilines to give the desired (het)arylamines in good to excellent yields. The reaction is sensitive to the nature and amount of the silane promoter.
Parallel synthesis of N-arylpiperazines using polymer-assisted reactions
Duncton, Matthew A. J.,Roffey, Jonathan R. A.,Hamlyn, Richard J.,Adams, David R.
, p. 2549 - 2552 (2007/10/03)
A series of N-arylpiperazines were prepared in a parallel fashion using palladium-catalyzed cross-coupling, or nucleophilic aromatic displacement chemistries, and polymer-assisted sequestration and purification techniques as key steps.
COMPOUNDS, COMPOSITIONS AND METHODS
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Page 57; 58, (2008/06/13)
Compounds, compositions, and methods for treating fungal infection by modulating the activity of the fungal kinesin Kip 1 are disclosed.
Tetracyclic benzimidazole derivatives and combinatorial libraries thereof
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, (2008/06/13)
The present invention relates to novel tetracyclic benzimidazole derivative compounds of the following formula: wherein R1to R10have the meanings described in here. The invention further relates to combinatorial libraries containing two or more such compounds, as well as methods of preparing tetracyclic benzimidazole derivative compounds.
Polymers based on N-carbamyl-N'-dimethysilyl methyl-piperazine traceless linkers for the solid phase synthesis of phenyl based libraries
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, (2008/06/13)
The present invention relates to polymers characterized by novel silicon linkers based on the carbamyl piperazine moiety, methods of preparing these polymers and their use in the solid phase synthesis of compounds or libraries of compounds embracing a phenyl ring in their structure.