Homologation of Electron-Rich Benzyl Bromide Derivatives via Diazo C–C Bond Insertion
作者:Atanu Modak、Juan V. Alegre-Requena、Louis de Lescure、Kathryn J. Rynders、Robert S. Paton、Nicholas J. Race
DOI:10.1021/jacs.1c11503
日期:2022.1.12
The ability to manipulate C–C bonds for selective chemical transformations is challenging and represents a growing area of research. Here, we report a formal insertion of diazo compounds into the “unactivated” C–C bond of benzyl bromide derivativescatalyzed by a simple Lewisacid. The homologation reaction proceeds via the intermediacy of a phenonium ion, and the products contain benzylic quaternary
[EN] 2,6-DISUBSTITUTED PYRIDINES AS SOLUBLE GUANYLATE CYCLASE ACTIVATORS<br/>[FR] PYRIDINES 2,6-DISUBSTITUÉES COMME ACTIVATEURS DE LA GUANYLATE CYCLASE SOLUBLE
申请人:SMITHKLINE BEECHAM CORP
公开号:WO2009071504A1
公开(公告)日:2009-06-11
Disclosed are compounds of formula (I) wherein R1 and R2 are independently selected from hydrogen, halo, CF3, C1-4alkyl and allyl; Y represents (II), (III), (IV) or (V) wherein R3 represents CF3 or C1-4alkyl; and R3a represents CF3 or C1-4alkyl.
Beta-diketones substituted by an aryl-aliphatic group in which the aliphatic chain is interrupted by a cyclic group, and useful as anti-viral agents, are prepared by interacting the appropriate aryl-aliphatic halide with an alkali metal salt of a beta-diketone.
Antiviral activity of some .beta.-diketones. 4. Benzyl diketones. In vitro activity against both RNA and DNA viruses
作者:G. D. Diana、Philip M. Carabateas、Robert E. Johnson、Gordon L. Williams、Francis Pancic、Joseph C. Collins
DOI:10.1021/jm00207a010
日期:1978.9
The synthesis and in vitro antiviral evaluation of a series of substituted benzyl beta-diketones are described. The introduction of a styryl group onto the phenyl ring enhanced activity against herpesvirus type 2. The 4-methoxystyryl homologue 8 was evaluated extensively in vitro and was found to be effective against both RNA and DNA viruses. Compound 8 was evaluated in the mouse vagina against herpes simplex type 1 and produced a significant increase in survival rate as well as in survival time.