Penicillin derivatives, process for their preparation and pharmaceutical compositions containing certain of these compounds
申请人:BEECHAM GROUP PLC
公开号:EP0013617A1
公开(公告)日:1980-07-23
This invention relates to a process for the preparation of certain penicillin derivatives which are useful as β-lactamase inhibitors. The compounds which may be prepared by the process of this invention have formula (I), or a pharmaceutically acceptable salt or ester thereof:
wherein R represents hydrogen, halogen, C1-6alkylthio, C1-6alkyl or alkyl substituted with phenyl, carboxy, C1-6alkoxycarbonyl, hydroxyorC1-6alkylthio, and n is zero, 1 or 2. In addition certain of the compounds produced by the process of the invention are novel compounds.
Regiospecific Syntheses of 6α-(1<i>R</i>-Hydroxyoctyl)penicillanic Acid and 6β-(1<i>R</i>-Hydroxyoctyl)penicillanic Acid as Mechanistic Probes of Class D β-Lactamases
作者:Sebastian A. Testero、Peter I. O’Daniel、Qicun Shi、Mijoon Lee、Dusan Hesek、Akihiro Ishiwata、Bruce C. Noll、Shahriar Mobashery
DOI:10.1021/ol900668k
日期:2009.6.18
The unique hydrophobic surface patches in class D β-lactamases presented an opportunity for designing two compounds, 6α-(1R-hydroxyoctyl)penicillanicacid and 6β-(1R-hydroxyoctyl)penicillanicacid, as mechanistic probes of these enzymes. In a sequence of three synthetic steps from benzhydryl 6,6-dibromopenicillanate, the targeted compounds were prepared in a stereospecific manner.