for the synthesis of 2,4,5-trisubstituted oxazoles has been developed from the direct coupling of α-diazoketones with aryl or alkyl nitriles. The reaction proceeds through the formation of nitrilium ion by the nucleophic addition of nitrile onto diazo functionality followed by an intramolecular trapping of nitrilium ion by keto group. Both aryl, and alkyl nitriles underwent smooth cyclocondensation
[EN] POLYMYXIN ANALOGS USEFUL AS ANTIBIOTIC POTENTIATORS<br/>[FR] ANALOGUES DE LA POLYMYXINE UTILES EN TANT QUE POTENTIALISATEURS D'ANTIBIOTIQUE
申请人:SPERO OPCO
公开号:WO2017189866A1
公开(公告)日:2017-11-02
The disclosure provides compounds of the formula (I) or a tautomer thereof, or a pharmaceutically acceptable salt of either of the foregoing. The variables A, R1, and R2 are defined in the disclosure. The disclosure further includes pharmaceutical compositions comprising a compound of formula I together with at least one pharmaceutically acceptable carrier. The disclosure also includes a method of sensitizing bacteria to an antibacterial agent, comprising administering to a patient infected with the bacteria, simultaneously or sequentially, a therapeutically effective amount of the antibacterial agent and a compound of formula (I).