Polybasic bacterial efflux pump inhibitors and therapeutic uses thereof
申请人:Rempex Pharmaceuticals, Inc.
公开号:US08178490B2
公开(公告)日:2012-05-15
Disclosed are compounds having polybasic functionalities. The compounds inhibit bacterial efflux pump inhibitors and are used in combination with an anti-bacterial agent to treat or prevent bacterial infections. These combinations can be effective against bacterial infections that have developed resistance to anti-bacterial agents through an efflux pump mechanism.
Competitive Formation of <i>N</i>-Diazeniumdiolates and <i>N</i>-Nitrosamines via Anaerobic Reactions of Polyamines with Nitric Oxide
作者:Peter N. Coneski、Mark H. Schoenfisch
DOI:10.1021/ol902282y
日期:2009.12.3
Reactions of amines with nitric oxide (NO) at high pressures form diverse NO donor species, highly dependent on the precursor structure. While monoamine precursors favor the formation of N-diazeniumdiolates in high yield, polyamines exhibit competitive formation of N-nitrosamines and diazeniumdiolates, resulting in mixed products containing significant percentages of undesired N-nitroso compounds.
POLYBASIC BACTERIAL EFFLUX PUMP INHIBITORS AND THERAPEUTIC USES THEREOF
申请人:GLINKA TOMASZ
公开号:US20080318957A1
公开(公告)日:2008-12-25
Disclosed are compounds having polybasic functionalities. The compounds inhibit bacterial efflux pump inhibitors and are used in combination with an anti-bacterial agent to treat or prevent bacterial infections. These combinations can be effective against bacterial infections that have developed resistance to anti-bacterial agents through an efflux pump mechanism.
In order to clarify the role of oxygen in the reaction of amines with nitric oxide, secondary amines were allowed to react with nitric oxide in the presence of oxygen. Although N-nitrosamines were obtained as the main products in every case, the yields depended on the substituents and reaction solvents. Detailed investigation revealed that the rection proceeded by at least two pathways : one involving oxygen as a catalyst, and the other consuming the stoichiometric amount of oxygen. Both paths afforded the same nitroso adducts. It was suggested that a third path, a catalytic process via Drago's salts was also possible. The same reaction was applied to a tertiary amine, and it was found that the oxygen was consumed stoichiometrically in this case.