example of oxyamination of azlactones with oxaziridines was realized using a chiral bisguanidinium salt. Efficient catalytic asymmetric oxyamination and kinetic resolution of oxaziridines occurred simultaneously. Various chiral oxazolin-4-one derivatives with potential biological activity were obtained (up to 92% ee). Meanwhile, a series of optically pure oxaziridines were recovered with up to 99% ee and
[EN] ANTIBACTERIAL AGENTS: N(ALPHA)-AROYL-N-ARYL-PHENYLALANINAMIDES<br/>[FR] AGENTS ANTIBACTÉRIENS : N (ALPHA)-AROYL-N-ARYL-PHÉNYLALANINAMIDES
申请人:UNIV RUTGERS
公开号:WO2015120320A1
公开(公告)日:2015-08-13
The invention provides compounds having activity as bacterial RNA polymerase inhibitors and antibacterial agents, as well as compositions comprising the compounds and methods for their use. Specifically, phenylalanineamide and tyrosinamide compounds are disclosed that have inhibitory activity toward mycobacterium tuberculosis RNA polymerase. Use of these compounds in the treatment o prevention of M. tuberculosis infections in a mammal, is disclosed.
An asymmetric inverse-electron-demandhetero-Diels-Alderreaction between o-quinone methides and azlactones to generate potentially pharmacological active dihydrocoumarins has been achieved efficiently by using a chiral N,N'-dioxide-Sc(III) complex as the catalyst. The desired products were obtained in high yields with excellent enantioselectivities and diastereoselectivities (up to 94% yield, 96%
pyrrolidine-catalyzed three-component reaction of azlactone, N,O-acetal and alcohol for the synthesis of α,β-diamino ester was reported. The N,O-acetal served as the imine equivalent to occur Mannich reaction with azlactone, and the in situ generated α-functionalized azlactone subsequently underwent a ring-opening process in the presence of alcohol. A series of α,β-diamino esters were obtained in 36–99% yields