953-91-3Relevant academic research and scientific papers
Identification of organophosphorus simulants for the development of next-generation detection technologies
Ellaby, Rebecca J.,Clark, Ewan R.,Allen, Nyasha,Taylor, Faith R.,Ng, Kendrick K. L.,Dimitrovski, Milan,Chu, Dominique F.,Mulvihill, Daniel P.,Hiscock, Jennifer R.
, p. 2008 - 2014 (2021/03/16)
Organophosphorus (OP) chemical warfare agents (CWAs) represent an ongoing threat but the understandable widespread prohibition of their use places limitations on the development of technologies to counter the effects of any OP CWA release. Herein, we describe new, accessible methods for the identification of appropriate molecular simulants to mimic the hydrogen bond accepting capacity of the PO moiety, common to every member of this class of CWAs. Using the predictive methodologies developed herein, we have identified OP CWA hydrogen bond acceptor simulants for soman and sarin. It is hoped that the effective use of these physical property specific simulants will aid future countermeasure developments.
Design, synthesis, and functional assessment of Cmpd-15 derivatives as negative allosteric modulators for the β2-adrenergic receptor
Meng, Kaicheng,Shim, Paul,Wang, Qingtin,Zhao, Shuai,Gu, Ting,Kahsai, Alem W.,Ahn, Seungkirl,Chen, Xin
, p. 2320 - 2330 (2018/03/29)
The β2-adrenergic receptor (β2AR), a G protein-coupled receptor, is an important therapeutic target. We recently described Cmpd-15, the first small molecule negative allosteric modulator (NAM) for the β2AR. Herein we report in details the design, synthesis and structure-activity relationships (SAR) of seven Cmpd-15 derivatives. Furthermore, we provide in a dose-response paradigm, the details of the effects of these derivatives in modulating agonist-induced β2AR activities (G-protein-mediated cAMP production and β-arrestin recruitment to the receptor) as well as the binding affinity of an orthosteric agonist in radio-ligand competition binding assay. Our results show that some modifications, including removal of the formamide group in the para-formamido phenylalanine region and bromine in the meta-bromobenzyl methylbenzamide region caused dramatic reduction in the functional activity of Cmpd-15. These SAR results provide valuable insights into the mechanism of action of the NAM Cmpd-15 as well as the basis for future development of more potent and selective modulators for the β2AR based on the chemical scaffold of Cmpd-15.
Pyrazole compound and preparation and application methods thereof
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Paragraph 0053; 0055-0060, (2018/10/19)
The invention provides a pyrazole compound and preparation and application methods thereof. The pyrazole compound is synthesized by introducing 2-amido-benzoxazole groups into pyrazole. The prepared pyrazole compound is low in toxic and side effects, high in oral bioavailability, significant in inhibition on tumor cells such as human breast cancer cells, human lung cancer cells, human prostatic cancer cells, human gastric cancer cells and human malignant glioma cells and capable of providing new possibilities for developing high-efficiency and low-toxicity anti-tumor drugs. Meanwhile, the pyrazole compound is wide in material sources, simple in synthesizing processes and applicable to industrial production.
Containing piperazinone quinazoline ketone PARP - 1/2 inhibitor and its preparation method, pharmaceutical composition and use thereof (by machine translation)
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Paragraph 0380; 0381, (2017/09/08)
The invention discloses a new class of containing piperazinone quinazoline - 2, 4 (1 H, 3 H) - dione PARP - 1/2 inhibitor, and its preparation and pharmaceutical composition and use. Specifically, the invention relates to the general formula I shown containing of the piperazinone quinazoline - 2, 4 (1 H, 3 H) - dione derivatives and their pharmaceutically acceptable salt, and its preparation method, comprising one or more of the compounds of the composition, and the compounds in the preparation, the prevention and/or treatment with PARP - 1/2 of a disease associated with the use of the medicament. (by machine translation)
Ionic liquid brush as an efficient and reusable heterogeneous catalytic assembly for the tosylation of phenols and alcohols in neat water
Feng, Simin,Li, Jing,Wei, Junfa
supporting information, p. 4743 - 4746 (2017/07/12)
A very efficient and reusable heterogeneous ionic liquid brush assembly was developed. The catalyst exhibits high catalytic activity for the tosylation of phenols and alcohols in neat water. Moreover, the catalyst shows outstanding stability and reusability, and it can be simply and effectively recovered and reused five times without noticeable loss of catalytic activity.
METAL OXIDE CATALYZED RADIOFLUORINATION
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Paragraph 0109, (2016/02/28)
Inter alia, the first titania-catalyzed [18F]-radiofluorination in highly aqueous medium is provided. In embodiments, the method utilizes titanium dioxide, 1 : 1 acetonitrile- thexyl alcohol solvent mixture and tetrabutylammonium bicarbonate as a base. Radiolabeling may be directly performed with aqueous [18F]fluoride without the need for drying/azeotroping step, which reduces radiosynthesis time while keeping high fluoride conversion. The general applicability of the synthetic strategy to the synthesis of the wide range of PET probes from tosylated precursors is demonstrated.
IMIDAZOPYRIDAZINE COMPOUNDS USEFUL AS MODULATORS OF IL-12, IL-23 AND/OR IFN ALPHA RESPONSES
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Page/Page column 80, (2015/06/25)
Compounds having the following formula (I), or a stereoisomer or pharmaceutically-acceptable salt thereof, where R1, R2, R3, R4, and R5 are as defined herein, are useful in the modulation of IL-12, IL-23 and/or IFNα, by acting on Tyk-2 to cause signal transduction inhibition.
Titania-catalyzed radiofluorination of tosylated precursors in highly aqueous medium
Sergeev, Maxim E.,Morgia, Federica,Lazari, Mark,Wang, Christopher,Van Dam, R. Michael
supporting information, p. 5686 - 5694 (2015/05/20)
Nucleophilic radiofluorination is an efficient synthetic route to many positron-emission tomography (PET) probes, but removal of water to activate the cyclotron-produced [18F]fluoride has to be performed prior to reaction, which significantly increases overall radiolabeling time and causes radioactivity loss. In this report, we demonstrate the possibility of 18F-radiofluorination in highly aqueous medium. The method utilizes titania nanoparticles, 1:1 (v/v) acetonitrile-thexyl alcohol solvent mixture, and tetra-n-butylammonium bicarbonate as a phase-transfer agent. Efficient radiolabeling is directly performed with aqueous [18F]fluoride without the need for a drying/azeotroping step to significantly reduce radiosynthesis time. High radiochemical purity of the target compound is also achieved. The substrate scope of the synthetic strategy is demonstrated with a range of aromatic, aliphatic, and cycloaliphatic tosylated precursors.
A dicationic, podand-like, ionic liquid water system accelerated copper-catalyzed azide-alkyne click reaction
Javaherian, Mohammad,Kazemi, Foad,Ghaemi, Masoumeh
, p. 1643 - 1647 (2015/01/09)
In this work, an effective, task specific, dicationic, podand-like ionic liquid was synthesized and applied to improve the capability features of click reaction. Moreover, to broaden the scope and decreasing the serious limitations of preparation methods of organic azides, a simple green procedure for the preparation of alkyl azides, the fundamental starting materials in click reactions, from alcohols under solvent-free conditions and microwave irradiation has been reported, for the first time.
One-pot tandem reactions for direct conversion of thiols and disulfides to sulfonic esters, and Paal-Knorr synthesis of pyrrole derivatives catalyzed by TCCA
Hemmati, Saba,Mojtahedi, Mohammad Majid,Abaee, Mohammad Saeed,Vafajoo, Zahra,Saremi, Shokufe Ghahri,Noroozi, Mohammad,Sedrpoushan, Alireza,Ataee, Meral
, p. 347 - 357 (2013/09/23)
A convenient synthesis of sulfonic esters from thiols and disulfides is described. In situ preparation of sulfonyl chlorides from thiols is accomplished by oxidation with trichloroisocyanuric acid (TCCA), tetra-butylammonium chloride (t-Bu4NCl), and water. The sulfonyl chlorides are then further allowed to react with phenol derivatives in the same reaction vessel. Also, a facile synthesis of N-substituted pyrroles by the reaction of hexane-2,5-dione with primary amines has been accomplished using TCCA as a catalyst under mild condition with excellent yields.
