Identification, Design and Biological Evaluation of Heterocyclic Quinolones Targeting Plasmodium falciparum Type II NADH:Quinone Oxidoreductase (PfNDH2)
摘要:
Following a program undertaken to identify hit compounds against NADH:ubiquinone oxidoreductase (PfNDH2), a novel enzyme target within the malaria parasite Plasmodium falciparum, hit to lead optimization led to identification of CK-2-68, a molecule suitable for further development. In order to reduce ClogP and improve solubility of CK-2-68 incorporation of a variety of heterocycles, within the side chain of the quinolone core, was carried out, and this approach led to a lead compound SL-2-25 (8b). 8b has IC(50)s in the nanomolar range versus both the enzyme and whole cell P. falciparum (IC50 = 15 nM PfNDH2; IC50 = 54 nM (3D7 strain of P. falciparum) with notable oral activity of ED50/ED90 of 1.87/4.72 mg/kg versus Plasmodium berghei (NS Strain) in a murine model of malaria when formulated as a phosphate salt. Analogues in this series also demonstrate nanomolar activity against the bc(1) complex of P. falciparum providing the potential added benefit of a dual mechanism of action. The potent oral activity of 2-pyridyl quinolones underlines the potential of this template for further lead optimization studies.
[EN] 4,4A,5,7,8,8A-HEXAPYRIDO[4,3-B][1,4]OXAZIN-3-ONE COMPOUNDS AS MAGL INHIBITORS<br/>[FR] COMPOSÉS 4,4A,5,7,8,8 A-HEXAPYRIDO [4,3-B] [1,4] OXAZIN-3-ONE EN TANT QU'INHIBITEURS DE MAGL
申请人:HOFFMANN LA ROCHE
公开号:WO2021048242A1
公开(公告)日:2021-03-18
The invention provides new heterocyclic compounds having the general formula (I) wherein A, B, L1, X, m, n, and R1 to R7 are as described herein, compositions including the compounds, processes of manufacturing the compounds and methods of using the compounds as monoacylglycerol lipase (MAGL) inhibitors.
The present invention relates to antimalarial compounds. More specifically, the present invention relates to novel substituted quinolone derivatives of formula (I) and related quinoline derivatives of formula (II) as defined herein that possess potent antimalarial activity. The present invention also relates to processes for the preparation of these quinolone and quinoline derivatives, to pharmaceutical compositions comprising them and to their use as therapeutic agents for the treatment and/or prevention of malaria.
The invention provides new heterocyclic compounds having the general formula (I) wherein B, C, L, X, Y, RL and R3 to R5 are as described herein, compositions including the compounds, processes of manufacturing the compounds and methods of using the compounds.
4-pyridone derivatives of Formula (1) and pharmaceutically acceptable derivatives thereof, processes for their preparation, pharmaceutical formulations thereof and their use in chemotherapy of certain parasitic infections such as malaria, are provided.
4-pyridone derivatives of Formula (I) and pharmaceutically acceptable derivatives thereof, processes for their preparation, pharmaceutical formulations thereof and their use in chemotherapy of certain parasitic infections such as malaria, are provided.