122023-36-3Relevant academic research and scientific papers
Ketone Synthesis from Benzyldiboronates and Esters: Leveraging α-Boryl Carbanions for Carbon-Carbon Bond Formation
Lee, Boran,Chirik, Paul J.
, p. 2429 - 2437 (2020/03/03)
An alkoxide-promoted method for the synthesis of ketones from readily available esters and benzyldiboronates is described. The synthetic method is compatible with a host of sterically differentiated alkyl groups, alkenes, acidic protons α to carbonyl groups, tertiary amides, and aryl rings having common organic functional groups. With esters bearing α-stereocenters, high enantiomeric excess was maintained during ketone formation, establishing minimal competing racemization by deprotonation. Monitoring the reaction between benzyldiboronate and LiOtBu in THF at 23 °C allowed for the identification of products arising from deborylation to form an α-boryl carbanion, deprotonation, and alkoxide addition to form an "-ate" complex. Addition of 4-trifluoromethylbenzoate to this mixture established the α-boryl carbanion as the intermediate responsible for C-C bond formation and ultimately ketone synthesis. Elucidation of the role of this intermediate leveraged additional bond-forming chemistry and enabled the one-pot synthesis of ketones with α-halogen atoms and quaternary centers with four-different carbon substituents.
Discovery of the First in Vivo Active Inhibitors of the Soluble Epoxide Hydrolase Phosphatase Domain
Kramer, Jan S.,Woltersdorf, Stefano,Duflot, Thomas,Hiesinger, Kerstin,Lillich, Felix F.,Kn?ll, Felix,Wittmann, Sandra K.,Klingler, Franca-M.,Brunst, Steffen,Chaikuad, Apirat,Morisseau, Christophe,Hammock, Bruce D.,Buccellati, Carola,Sala, Angelo,Rovati, G. Enrico,Leuillier, Matthieu,Fraineau, Sylvain,Rondeaux, Julie,Hernandez-Olmos, Victor,Heering, Jan,Merk, Daniel,Pogoryelov, Denys,Steinhilber, Dieter,Knapp, Stefan,Bellien, Jeremy,Proschak, Ewgenij
, p. 8443 - 8460 (2019/10/16)
The emerging pharmacological target soluble epoxide hydrolase (sEH) is a bifunctional enzyme exhibiting two different catalytic activities that are located in two distinct domains. Although the physiological role of the C-terminal hydrolase domain is well-investigated, little is known about its phosphatase activity, located in the N-terminal phosphatase domain of sEH (sEH-P). Herein we report the discovery and optimization of the first inhibitor of human and rat sEH-P that is applicable in vivo. X-ray structure analysis of the sEH phosphatase domain complexed with an inhibitor provides insights in the molecular basis of small-molecule sEH-P inhibition and helps to rationalize the structure-activity relationships. 4-(4-(3,4-Dichlorophenyl)-5-phenyloxazol-2-yl)butanoic acid (22b, SWE101) has an excellent pharmacokinetic and pharmacodynamic profile in rats and enables the investigation of the physiological and pathophysiological role of sEH-P in vivo.
UREIDE DERIVATIVE AND USE THEREOF FOR MEDICAL PURPOSES
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Page/Page column 46, (2009/01/24)
This invention relates to a pharmaceutical comprising, as an active ingredient, a ureide derivative represented by formula: or a pharmaceutically acceptable salt thereof. The ureide derivative or a pharmaceutically acceptable salt thereof according to the present invention is useful for relieving pain and treating or preventing neuropathic pain.
1,3-heterocyclic-substituted alkane
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, (2008/06/13)
A 2-propanol derivative of the formula I, wherein R1 and R5, which may be the same or different, are each a triazolyl, imidazolyl, pyridyl or pyrimidinyl radical; R2, R3 and R4, which may be the same or different, are each a hydrogen atom, a 1-6C alkyl, halogenoalkyl or alkoxy radical, a 3-8C cycloalkyl radical, or a phenyl, naphthyl, phenoxy, naphthyloxy or phenyl (1-6C alkyl) radical, in each of which the aryl group optionally bears one or more substituents selected from halogen atoms, amino, carboxamido, cyano and nitro radicals, 1-6C alkyl, halogenoalkyl, alkoxy, halogenoalkoxy and alkylamino radicals, 3-8C cycloalkyl radicals, di(1-6C alkyl)amino radicals and 2-6C alkoxycarbonyl radicals; R6 is a phenyl or naphthyl radical optionally bearing one or more substituents as defined above; X is a direct bond, an alkylene, alkenylene or alkynylene radical, or an oxyalkylene or thioalkylene radical wherein respectively the oxygen or sulphur atom is bonded to R6 or a phenylalkylene radical in which the phenyl group bears one or more substituents as defined above for R6 ; and Y is a hydrogen or halogen atom, a hydroxy, cyano or carbamoyl radical, or a phenyl(1-6C alkoxy) radical in which the phenyl group bears one or more substituents as defined above for R6 ; provided that, when Y is a cyano or carbamoyl radical, neither R2, R3 nor R4 may be an alkoxy or aryloxy radical, and either R2 is a hydrogen atom, or R3 and R4 are both hydrogen atoms; and provided that, when R1 and R5 are each a 1,2,4-triazol-1-yl radical, R2 is hydrogen and Y is a hydroxy radical, R3 and R4 may not be hydrogen or methyl when X is a direct bond, and R3 and R4 may not be hydrogen when X is a methylene radical; and for those compounds which contain a basic nitrogen atom, the pharmaceutically acceptable acid additon salts thereof.
