79574-71-3Relevant academic research and scientific papers
Design, synthesis, and activity of a series of arylpyrid-3-ylmethanones as type i positive allosteric modulators of α7 nicotinic acetylcholine receptors
Hogenkamp, Derk J.,Ford-Hutchinson, Thomas A.,Li, Wen-Yen,Whittemore, Edward R.,Yoshimura, Ryan F.,Tran, Minhtam B.,Johnstone, Timothy B. C.,Bascom, Gavin D.,Rollins, Hannah,Lu, Lena,Gee, Kelvin W.
, p. 8352 - 8365 (2013/12/04)
A series of novel arylpyrid-3-ylmethanones (7a-aa) were designed as modulators of α7 nicotinic acetylcholine receptors (nAChRs). The methanones were found to be type I positive allosteric modulators (PAMs) of human α7 nAChRs expressed in Xenopus ooctyes. Structure-activity relationship (SAR) studies resulted in the identification of compound 7v as a potent and efficacious type I PAM with maximum modulation of a nicotine EC 5 response of 1200% and EC50 = 0.18 μM. Compound 7z was active in reversing the effect of scopolamine in the novel object recognition (NOR) paradigm with a minimum effective ip dose of 1.0 mg/kg (2.7 μmol/kg). This effect was blocked by the selective α7 nAChR antagonist methyllycaconitine (MLA). These compounds are potent type I positive allosteric modulators of α7 nAChRs that may have therapeutic value in restoring impaired sensory gating and cognitive deficits in schizophrenia and Alzheimer's disease.
Deprotonative metalation of aromatic compounds by using an amino-based lithium cuprate
Nguyen, Tan Tai,Marquise, Nada,Chevallier, Floris,Mongin, Florence
experimental part, p. 10405 - 10416 (2011/10/12)
Deprotonative cupration of aromatic compounds by using amino-based lithium cuprates was optimized with 2,4-dimethoxypyrimidine and 2-methoxypyridine as the substrates and benzoyl chloride as the electrophile. [(tmp)2CuLi] (+2 LiCl) (tmp=2,2,6,6-tetramethylpiperidino) was identified as the best reagent and its use was extended to anisole, 1,4-dimethoxybenzene, other substituted pyridines, furan, thiophene and derivatives, and N-Boc-indole (Boc=tert-butyloxycarbonyl). Of the electrophiles employed to attempt the interception of the generated aryl cuprates, aroyl chlorides, iodomethane, and diphenyl disulfide efficiently reacted. In addition, different oxidative agents were identified to afford symmetrical biaryls. Finally, palladium-catalyzed coupling with aryl halides was optimized and allowed the synthesis of different aryl derivatives in medium to good yields.
Convenient Stille carbonylative cross-couplings using molybdenum hexacarbonyl
Lindh, Jonas,Fardost, Ashkan,Almeida, Maria,Nilsson, Peter
experimental part, p. 2470 - 2472 (2010/07/04)
Palladium catalysis was used in Stille-type carbonylative cross-couplings employing Mo(CO)6 as the carbon monoxide source. Robust and convenient transformations were carried out in closed vessels at 100 °C, providing a set of diaryl ketones in good yields. Aryl triflates and bromides were used as coupling partners with aryl stannanes. Inclusion of the Mo(CO)6 destabilizing agent DBU made this protocol operationally simple and suppressed side-product formation.
A facile synthesis of 2,3-disubstituted furo[2,3-b]pyridines
Beutner, Gregory L.,Kuethe, Jeffrey T.,Yasuda, Nobuyoshi
supporting information; experimental part, p. 781 - 784 (2009/05/11)
In a three-step sequence starting from readily available starting materials, 2,3-carbon disubstituted furo[2,3-b]pyridines can be accessed in good yields and purity. Furo[2,3-b]pyridines bearing ester, amide and ketone groups at the 2-position can be prepared with a variety of aryl and alkyl groups at the 3-position.
Potent and selective inhibitors of Helicobacter pylori glutamate racemase (MurI): Pyridodiazepine amines
Geng, Bolin,Basarab, Gregory,Comita-Prevoir, Janelle,Gowravaram, Madhusudhan,Hill, Pamela,Kiely, Andrew,Loch, James,MacPherson, Lawrence,Morningstar, Marshall,Mullen, George,Osimboni, Ekundayo,Satz, Alexander,Eyermann, Charles,Lundqvist, Tomas
scheme or table, p. 930 - 936 (2009/09/06)
An SAR study of an HTS screening hit generated a series of pyridodiazepine amines as potent inhibitors of Helicobacter pylori glutamate racemase (MurI) showing highly selective anti-H. pylori activity, marked improved solubility, and reduced plasma protei
New Gilman-type lithium cuprate from a copper(II) salt: synthesis and deprotonative cupration of aromatics
Nguyen, Tan Tai,Chevallier, Floris,Jouikov, Viatcheslav,Mongin, Florence
experimental part, p. 6787 - 6790 (2010/04/29)
Deprotonative cupration of aromatics including heterocycles (anisole, 1,4-dimethoxybenzene, thiophene, furan, 2-fluoropyridine, 2-chloropyridine, 2-bromopyridine, and 2,4-dimethoxypyrimidine) was realized in tetrahydrofuran at room temperature using the Gilman-type amido-cuprate (TMP)2CuLi in situ prepared from CuCl2·TMEDA through successive addition of 1 equiv of butyllithium and 2 equiv of LiTMP. The intermediate lithium (hetero)arylcuprates were evidenced by trapping with iodine, allyl bromide, methyl iodide, and benzoyl chlorides, the latter giving the best results. Symmetrical dimers were also prepared from lithium azine and diazine cuprates using nitrobenzene as an oxidative agent.
METALLATION REGIOSELECTIVE EN SERIE PYRIDINIQUE: SYNTHESE ORIGINALE D'AMINO-2-AROYL 3-PYRIDINES
Guengoer, Timur,Marsais, Francis,Queguiner, Guy
, p. 139 - 150 (2007/10/02)
Lithium diisopropylamide reacts with 2-fluoropyridine at low temperature: regioselectivity is excellent and metallation occurs without side reactions such as nucleophilic attack. 2-Fluoro-3-lithiopyridine is formed and with aldehydes it gives the correspo
