[EN] NOVEL INHIBITORS OF BETA-LACTAMASE<br/>[FR] NOUVEAUX INHIBITEURS DE BÊTA-LACTAMASE
申请人:MERCK & CO INC
公开号:WO2008039420A2
公开(公告)日:2008-04-03
[EN] A class of 7-oxo-2,6-diazabicyclo-[3.2.0]-heptane-6-sulfonic acid compounds substituted at the two position of the bicyclic ring with a heterocyclylaminocarbonyl group or a carbocyclylaminocarbonyl group are ß-lactamase inhibitors. The compounds and their prodrugs and pharmaceutically acceptable salts are useful in the treatment of bacterial infections in combination with ß-lactam antibiotics. In particular, the compounds are suitable for use with ß-lactam antibiotics (e.g., imipenem and ceftazidime) against micro-organisms resistant to ß-lactam antibiotics due to the presence of the ß-lactamases. [FR] L'invention concerne une classe de composés d'acide 7-oxo-2,6-diazabicyclo-[3.2.0]-heptane-6-sulfonique, substitués à la position 2 du noyau bicyclique par un groupe hétérocyclylaminocarbonyle ou un groupe carbocyclylaminocarbonyle, qui sont des inhibiteurs de bêta-lactamase. Ces composés, ainsi que leurs promédicaments et leurs sels pharmaceutiquement acceptables, sont utiles dans le traitement d'infections bactériennes lorsqu'ils sont associés à des antibiotiques bêta-lactame (p. ex. imipenem and ceftazidime) pour lutter contre des micro-organismes résistants aux antibiotiques bêta-lactame, du fait de la présence des bêta-lactamases.
Influence of ring size on the cognition-enhancing activity of DM235 and MN19, two potent nootropic drugs
and MN19, characterized by rings with different size, have been prepared and evaluated for their nootropic activity in the mouse passive-avoidance test. It was found that the optimal ringsize for the analogs of DM235, showing endocyclic both amidic groups, is 6 or 7 atoms. For the compounds structurally related to MN19, carrying an exocyclic amide group, the piperidine ring is the moiety which gives