[EN] PREPARATION AND USE OF PSEUDOPTEROXAZOLE AND PSEUDOPTEROSIN ANALOGS AND DERIVATIVES<br/>[FR] PRÉPARATION ET UTILISATION D'ANALOGUES ET DE DÉRIVÉS DE PSEUDOPTÉROXAZOLE ET DE PSEUDOPTÉROSINE
申请人:NAUTILUS BIOSCIENCES CANADA INC
公开号:WO2012139212A1
公开(公告)日:2012-10-18
New methods of converting pseudopterosins to pseudopteroxazoles have been developed and used to make several new non-natural pseudopteroxazole analogs. These as well as pseudopterosins and derivatives thereof and prenylated aromatic structural mimics of pseudopterosins/pseudopteroxazoles are shown to display anti-bacterial activity including that against non-replicating mycobacteria, with some exhibiting no or limited toxicity against mammalian cells.
Evaluation of Pseudopteroxazole and Pseudopterosin Derivatives against Mycobacterium tuberculosis and Other Pathogens
作者:Malcolm W. B. McCulloch、Brad Haltli、Douglas H. Marchbank、Russell G. Kerr
DOI:10.3390/md10081711
日期:——
Pseudopterosins and pseudopteroxazole are intriguing marine natural products that possess notable antimicrobial activity with a commensurate lack of cytotoxicity. New semi-synthetic pseudopteroxazoles, pseudopteroquinoxalines and pseudopterosin congeners along with simple synthetic mimics of the terpene skeleton were synthesized. In order to build structure-activity relationships, a set of 29 new and previously reported compounds was assessed for in vitro antimicrobial and cytotoxic activities. A number of congeners exhibited antimicrobial activity against a range of Gram-positive bacteria including Mycobacterium tuberculosis H37Rv, with four displaying notable antitubercular activity against both replicating and non-replicating persistent forms of M. tuberculosis. One new semi-synthetic compound, 21-((1H-imidazol-5-yl)methyl)-pseudopteroxazole (7a), was more potent than the natural products pseudopterosin and pseudopteroxazole and exhibited equipotent activity against both replicating and non-replicating persistent forms of M. tuberculosis with a near absence of in vitro cytotoxicity. Pseudopteroxazole also exhibited activity against strains of M. tuberculosis H37Rv resistant to six clinically used antibiotics.