Tandem <i>N</i>,<i>N</i>-Dialkylation Reaction of <i>N</i>-Trimethylsilyl α-Iminoesters Utilizing an Umpolung Reaction and Characteristics of the Silyl Substituent: Synthesis of Pyrrolidine, Piperidine, and Iminodiacetate
with organometallics gave directly N-alkylaminoesters in high yields without the need for removing a protecting group at the nitrogen atom. Efficient syntheses of pyrrolidines, piperidines, and iminodiacetate derivatives were also developed via tandem N,N- or N,C-dialkylation reactions utilizing characteristics of the silyl substituent. Furthermore, under the influence of silica gel, the addition of
[EN] BETA-LACTAMASE INHIBITORS<br/>[FR] INHIBITEURS DE BÊTA-LACTAMASES
申请人:VENATORX PHARMACEUTICALS INC
公开号:WO2017100537A1
公开(公告)日:2017-06-15
Described herein are compounds and compositions that modulate the activity of beta-lactamases. In some embodiments, the compounds described herein inhibit beta-lactamase. In certain embodiments, the compounds described herein are useful in the treatment of bacterial infections.
Radical Allylation, Vinylation, Alkynylation, and Phenylation Reactions of α-Halo Carbonyl Compounds with Organoboron, Organogallium, and Organoindium Reagents
reactions of α-halo carbonyl compounds with alkenylindium proceeded via a radical process in the presence of triethylborane. Unactivated alkene moieties and styryl groups were introduced by this method. The carbon-carbon double bond geometry of the alkenylindiums was retained during the alkenylation. Preparation of an alkenylindium via a hydroindation of 1-alkyne and subsequent radical alkenylation established
2-(Aminomethyl)phenols, a new class of saluretic agents. 4. Effects of oxygen and/or nitrogen substitution
作者:G. E. Stokker、A. A. Deana、S. J. DeSolms、E. M. Schultz、R. L. Smith、E. J. Cragoe、J. E. Baer、H. F. Russo、L. S. Watson
DOI:10.1021/jm00348a024
日期:1982.6
series of oxygen and/or nitrogen substituted2-(aminomethyl)phenols was synthesized and tested orally in rats for saluretic and diuretic effects. Intravenous dog data are included as supplementary material to demonstrate diuretic responses, or lack thereof, in a second species. In general, substitution on nitrogen with groups other than lower alkyl or substitution on nitrogen and/or oxygen with groups
[reaction: see text] Allylzirconium reagents are effective for radicalallylation of alpha-halo carbonyl compounds. The key steps would be homolytic cleavage of the zirconium-carbon bond and halogen abstraction by the resulting Cp(2)ZrCl(III). Zirconocene-olefin complex can be also utilized for the allylation of alpha-halo compounds.