Drug to Genome to Drug: Discovery of New Antiplasmodial Compounds
摘要:
The dominant strategy for discovery of new antimalarial drugs relies on cell-free assays on specific biochemical pathways of Plasmodium falciparum . However, it appears that screening directly on the parasite is a more rewarding approach. The "drug to genome to drug" approach consists of testing a small set of structural analogues of a drug acting on human proteins that have plasmodial orthologues. Both man and plasmodium possess cyclic nucleotide phosphodiesterases (PDEs) that are key players of cell homeostasis. We synthesized and tested 40 analogues of tadalafil, a human PDE5 inhibitor, on P. falciparum in culture and obtained potent inhibitors of parasite growth. We discuss the structure-activity relationships, which support the hypothesis that our compounds kill the parasite via inhibition of plasmodial PDE activity. We also prove that antiplasmodial derivatives inhibit the hydrolysis of cyclic nucleotides of the parasite, validating the cAMP/cGMP pathways as therapeutic targets against Plasmodium falciparum .
CHIRAL TETRA-HYDRO BETA-CARBOLINE DERIVATIVES AND APPLICATIONS THEREOF AS ANTIPARASITIC COMPOUNDS
申请人:Université de Lille 2 Droit et Santé
公开号:EP1914235A1
公开(公告)日:2008-04-23
The invention relates to the use of chiral tetra-hydro β-carboline derivatives of formula (I) for the preparation of pharmaceutical composition for the prevention and/or the treatment of parasitic diseases involving parasites having a phosphodiesterase activity:
or a pharmaceutically acceptable salt thereof, in which:
- R1 and R2, identical or different, represent a hydrogen atom or a fluorine atom;
- k is an integer equal to 0 or 1;
- R3 is selected from the group consisting of:
■ a phenyl ring optionally substituted
■ a 3'-N-pyridine ring optionally substituted
- R4 is a group selected in the group consisting of the following groups: -NH-A-R5, -NHC(O)-R5 and the groups of formulas (II-a) to (II-c) below:
The invention also relates to some new chiral tetra-hydro β-carboline derivatives.
Drug to Genome to Drug: Discovery of New Antiplasmodial Compounds
作者:Terence B. Beghyn、Julie Charton、Florence Leroux、Guillaume Laconde、Arnaud Bourin、Paul Cos、Louis Maes、Benoit Deprez
DOI:10.1021/jm1014617
日期:2011.5.12
The dominant strategy for discovery of new antimalarial drugs relies on cell-free assays on specific biochemical pathways of Plasmodium falciparum . However, it appears that screening directly on the parasite is a more rewarding approach. The "drug to genome to drug" approach consists of testing a small set of structural analogues of a drug acting on human proteins that have plasmodial orthologues. Both man and plasmodium possess cyclic nucleotide phosphodiesterases (PDEs) that are key players of cell homeostasis. We synthesized and tested 40 analogues of tadalafil, a human PDE5 inhibitor, on P. falciparum in culture and obtained potent inhibitors of parasite growth. We discuss the structure-activity relationships, which support the hypothesis that our compounds kill the parasite via inhibition of plasmodial PDE activity. We also prove that antiplasmodial derivatives inhibit the hydrolysis of cyclic nucleotides of the parasite, validating the cAMP/cGMP pathways as therapeutic targets against Plasmodium falciparum .