[EN] PENICILLIN-BINDING PROTEIN INHIBITORS<br/>[FR] INHIBITEURS DE PROTÉINE DE LIAISON À LA PÉNICILLINE
申请人:VENATORX PHARMACEUTICALS INC
公开号:WO2021108023A1
公开(公告)日:2021-06-03
Described herein are certain boron-containing compounds, compositions, preparations and their use as modulators of the transpeptidase function of bacterial penicillin-binding proteins and as antibacterial agents. In some embodiments, the compounds described herein inhibit penicillin-binding proteins. In certain embodiments, the compounds described herein are useful in the treatment of bacterial infections.
An Expedient and Short Synthesis of a 6-Iodo Isocoumarin Building Block for the Rubromycin Family and its First Palladium-Catalyzed Couplings
作者:Hans-Ulrich Reissig、Malte Brasholz
DOI:10.1055/s-2004-835658
日期:——
An efficient six-step synthesis of 6-iodo substituted isocoumarin 6 is presented, which is a suitable building block for the preparation of rubromycin type compounds. Key transformations of the sequence were achieved by directed ortho-lithiation, Horner-Wadsworth-Emmons olefination and condensation processes. The protected isocoumarin 7 was successfully employed in first Heck and Sonogashira coupling
6-Iodoisocoumarin 4 and its aza-analogue, 6-iodo-1-oxo-isoquinoline 29, were efficiently prepared from vanillin in seven and six steps, respectively. Key transformations in their syntheses were achieved by directed ortho-lithiation and variations of Horner-Wadsworth-Emmons reactions. Both 6-iodoisocoumarin 4 and its aza-analogue were designed for insertion into syntheses of rubromycin type target structures via palladium-catalyzed coupling reactions. For the isocoumarin subunit, this plan could be confirmed through Heck, Sonogashira, and Suzuki reactions of our building block with various substrates.