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.
To find new antibacterial leads in the class of hydantoin derivatives, we carried out synthetic investigation and biological evaluation of the title hydantoin derivatives and related compounds. Among the hydantoin derivatives described in this article, compound 3o, in which a 2,6-dichlorophenyl ring was introduced at the N-3 position of the hydantoin nucleus, showed the highest levels of antibacterial activity against both Escherichia coli NBRC14237 (NIHJ) and Staphylococcus aureus ATCC6538P (gram-negative and gram-positive bacteria, respectively) strains.
EPIMERIZATION-FREE N TO C SOLID-PHASE PEPTIDE SYNTHESIS
申请人:Wayne State University
公开号:US20200062801A1
公开(公告)日:2020-02-27
The present disclosure provides a method of solid-phase peptide synthesis from the N terminus to C terminus without detectable epimerization of the C-terminal amino acid.
本公开提供了一种从N端到C端进行固相肽合成的方法,而且在C端氨基酸没有可检测到的对映异构化。
Preparation and Chemical Properties of 5-Dialkylaminomethylhydantoins and 2-Thio-Analogues
作者:Fumiko Fujisaki、Kaori Shoji、Kunihiro Sumoto
DOI:10.1248/cpb.57.1415
日期:——
efficient procedure for the preparation of 5-dialkylaminomethylhydantoins 3, which are easily obtained from cyclization of the corresponding urea derivatives 2 starting with beta-aminoalanines 1, is described. Methylenehydantoin and the corresponding 2-thio analogue (4a, 4b) were obtained fromhydantoins 3a and 3b, respectively. Some new chemical properties of these hydantoin derivatives are reported
Preferential Intramolecular Ring Closure of Aminoalcohols with Diethyl Carbonate to Oxazolidinones
作者:Fumiko Fujisaki、Marumi Oishi、Kunihiro Sumoto
DOI:10.1248/cpb.55.829
日期:——
closure by cyclization with diethyl carbonate (EtO)(2)CO from aminoalcohols 1 as starting material can lead to the oxazolidinones 2a, b and 2c, respectively. In the reaction of trans-isomer (6) and (EtO)(2)CO, isolated products were also only 5-membered oxazolidinone derivative (7), containing its dehydrated derivative8. The preferential formation of the 5-membered oxazolidinone ring system apparently