Regioselectivity in the Intramolecular Substitution Reactions of Electrochemically and Photochemically Generated Aryl Radicals with Adjacent Pyridine and Quinoline Rings. A Comparison between these Reactions and Related Processes Involving Tributyltin Hydride.
摘要:
Cleavage of the carbon-halogen bond in 1-(3-pyridinyl)- and 1-(3-quinolinyl)-5-(1-halogenophenyl)tetrazoles leads to a sigma-radical which undergoes a cyclization reaction onto the adjacent heterocyclic ring. Bond cleavage is effected both by electrochemical reduction and by photolysis. Yields of cyclized products formed in the two types of reaction are compared. The relative advantages of the electrochemical generation of an aryl a-radical from aryl halides over reaction of the same substrate with tributyltin hydride and a radical initiator are discussed.
Synthesis of NCA [carbonyl-11C]amides by direct reaction ofin situ generated [11C]carboxymagnesium halides with amines under microwave-enhanced conditions
N-aryl-piperazinealkanamides useful for improving sleep
申请人:Janssen Pharmaceutica N.V.
公开号:US04880808A1
公开(公告)日:1989-11-14
A method of improving sleep in warm-blooded animals suffering from sleep disorders, which method comprises the administration of particular N-aryl-piperazinealkanamide derivatives and compositions containing the same. Novel N-aryl-piperazinealkanamide derivatives.
A method of improving sleep in warm-blooded animals suffering from sleep disorders, which method comprises the administration of particular N-aryl-piperazinealkanamide derivatives and compositions containing the same. Novel N-aryl-piperazinealkanamide derivatives.
A method of improving sleep in warm-blooded animals suffering from sleep disorders, which method comprises the administration of particular N-aryl-piperazinealkanamide derivatives and compositions containing the same. Novel N-aryl-piperazinealkanamide derivatives.
N-(Pyridin-3-yl)benzamides as selective inhibitors of human aldosterone synthase (CYP11B2)
作者:Christina Zimmer、Marieke Hafner、Michael Zender、Dominic Ammann、Rolf W. Hartmann、Carsten A. Vock
DOI:10.1016/j.bmcl.2010.11.040
日期:2011.1
A series of 23 N-(Pyridin-3-yl)benzamides was synthesized and evaluated for their potential to inhibit human steroid-11 beta-hydroxylase (CYP11B1) and human aldosterone synthase (CYP11B2). The most potent and selective CYP11B2 inhibitors (IC50 values 53-166 nM) were further evaluated for their potential to inhibit human CYP17 and CYP19, and no inhibition was observed. Clear evidence was shown for N-(Pyridin-3-yl) benzamides to be a highly selective class of CYP11B2 inhibitors in vitro. (C) 2010 Elsevier Ltd. All rights reserved.
VAN, DAELE H. P.;VLAEMINCK, FREDDY F.;VERDANCK, G. C.
作者:VAN, DAELE H. P.、VLAEMINCK, FREDDY F.、VERDANCK, G. C.