Research output per year
Research output per year
J. Reniers, C. Meinguet, L. Moineaux, B. Masereel, S. P. Vincent, R. Frederick, J. Wouters
Research output: Contribution to journal › Article › peer-review
Previous studies on 5H-indeno[1,2-c]pyridazin-5-one derivatives as inhibitors of MAO-B revealed that it was possible to increase the MAO-B inhibitory potency of 5H-indeno[1,2-c]pyridazin-5-ones by substituting the central heterocycle in the 3-position or C-8 with lipophilic groups which occupy the substrate cavity or the entrance of the binding site, respectively. Here, four new 5H-indeno[1,2-c]pyridazin-5-one derivatives containing lipophilic groups at both positions were synthesized and their inhibitory potency against human monoamine oxidase A and B were evaluated. Selectivity of these compounds against IDO and TDO, two enzymes sharing substrate similarity with MAO and involved in the serotonergic and kynurenine pathways was also studied. All compounds showed higher activity and selectivity against MAO-B, the most effective one being 3-methyl-8-meta-chlorobenzyloxy-5H-indeno[1,2-c]pyridazin-5- one (9a) which was shown to be a competitive inhibitor with a Ki value of 0.11 μM. Replacing the methyl group in the 3-position with a meta-CF3-phenyl group (7a, 7b and 7c) abolished the inhibitory potency against MAO-B. Indeed, the substitution of the 5H-indeno[1,2-c] pyridazin-5-one core in the 3-position dramatically influences the MAO-inhibiting properties of these compounds. Molecular docking studies of 9a within MAO-B suggest that the 5H-indeno[1,2-c]pyridazin-5-one scaffold is well stabilized into the substrate cavity with the meta-chlorobenzyloxy side chain extending towards a rather hydrophobic pocket at the entrance cavity.
Original language | English |
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Pages (from-to) | 6104-6111 |
Number of pages | 8 |
Journal | European Journal of Medicinal Chemistry |
Volume | 46 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1 Dec 2011 |
Research output: Contribution to journal › Literature review › peer-review
Research output: Contribution to journal › Literature review › peer-review
Research output: Contribution to journal › Literature review › peer-review
Masereel, B. (PI), Wouters, J. (PI), Dolušić, E. (Researcher), FREDERICK, R. (Researcher), POUYEZ, J. (Researcher), Van den Eynde, B. J. (CoI), Frère, J.-M. (CoI), Moser, M. (CoI), Jean-Marie, B. (CoI), Combalbert, J. (PI) & Stephenne, J. (CoI)
1/04/08 → 31/03/12
Project: Research
Frederick, R. (Contributor), Masereel, B. (Contributor), Meinguet, C. (Contributor), Moineaux, L. (Contributor), Reniers, J. (Contributor), Vincent, S. (Contributor) & Wouters, J. (Contributor), Cambridge Crystallographic Data Centre, 1 Jan 2012
DOI: 10.5517/ccw9l1s, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccw9l1s&sid=DataCite
Dataset
Frederick, R. (Contributor), Masereel, B. (Contributor), Meinguet, C. (Contributor), Moineaux, L. (Contributor), Reniers, J. (Contributor), Vincent, S. (Contributor) & Wouters, J. (Contributor), Cambridge Crystallographic Data Centre, 1 Jan 2012
DOI: 10.5517/ccw9l2t, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccw9l2t&sid=DataCite
Dataset
Frederick, R. (Contributor), Masereel, B. (Contributor), Meinguet, C. (Contributor), Moineaux, L. (Contributor), Reniers, J. (Contributor), Vincent, S. (Contributor) & Wouters, J. (Contributor), Cambridge Crystallographic Data Centre, 1 Jan 2012
DOI: 10.5517/ccw9l0r, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccw9l0r&sid=DataCite
Dataset