[EN] ANTIBIOTIC COMPOUNDS, METHODS OF MANUFACTURING THE SAME, PHARMACEUTICAL COMPOSITIONS CONTAINING THE SAME AND USES THEREOF<br/>[FR] COMPOSÉS ANTIBIOTIQUES, LEURS PROCÉDÉS DE FABRICATION, COMPOSITIONS PHARMACEUTIQUES LES CONTENANT ET LEURS UTILISATIONS
申请人:DEBIOPHARM INT SA
公开号:WO2020099341A1
公开(公告)日:2020-05-22
The present invention provides compounds of the general structure (I), which are suitable as antibiotic compounds for the treatment of N. gonorrhoeae infections and related infections.
Highly Activated Second-Generation Grubbs–Hoveyda Catalyst Driven by Intramolecular Steric Strain
Various Grubbs–Hoveyda second-generation catalysts activated by intramolecular steric strain were prepared. The variant bearing a 9-anthracenyl group in the ligand moiety exhibited the highest catalytic activity. The new anthracenyl-type-activated catalyst was used in a ring-closing metathesis reaction to effectively provide a 4-substituted product effectively.
In this study, an activation strategy for Grubbs-Hoveyda second-generation-type catalysts by utilizing the intramolecular steric strain on the ligands is described. The variant, which is expected to exhibit intramolecular steric strain, containing extensively spread aromatic and alkoxy groups in the ligand structure was prepared and examined. The combination of tricyclic anthracenyl and isopropoxy groups are observed to exhibit the highest catalytic activity among these synthetic catalysts. The activated catalyst was successfully used in a ring-closing metathesis reaction depicting a catalyst loading of the order of 20 mol ppm in dry benzene. The X-ray crystallographic analysis suggests the existence of an intramolecular CH/pi interaction between the sp(2) carbon of the anthracenyl group and the methyne hydrogen of the isopropoxy group.