- New quinoline/1,2,4-triazole hybrids as dual inhibitors of COX-2/5-LOX and inflammatory cytokines: Design, synthesis, and docking study
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A novel series of 19 quinoline/1,2,4-triazole hybrid 6a-i and 7a-j was synthesized and evaluated in vitro as dual COX-2/5-LOX inhibitors. Compounds 6e, 6i, and 7e displayed the highest potency and selectivity for inhibiting COX-2 activity (IC50 = 7.25, 8.13, and 8.48 nM, respectively; selectivity index (COX-1/COX-2) = 44.89, 30.30, and 33.47, respectively) in comparison to celecoxib (COX-2 IC50 = 42.60 nM; selectivity index (SI) = 8.05). The anti-inflammatory activity of the newly synthesized compounds was further examined in vivo using a carrageenan induced paw edema assay. Interestingly, the in vitro findings of the COX inhibitory assay were consistent with the in vivo assay. Moreover, 6e, 6i, and 7e showed a substantial reduction in serum concentrations of PGE2, TNF-α, IL-6. Molecular docking analysis of compounds 6e, 6f, 6i, 7e, and 7f revealed high binding affinities toward COX-2 compared to COX-1, which was matched with the experimental results. In addition, these compounds exhibited different binding orientations into the active site of COX-2, which were dependent on the type of substitutions on N4 of the triazole ring. Among the tested derivatives, compounds 6e, 6i and 7e which showed high selectivity to COX-2, exhibited hydrogen bonding interactions with key amino acids in COX-2 such as Arg120, Arg513, and/or Glu524. In addition, the tested compounds also showed multiple hydrogen bonds with the Arg101, Val110, Arg138 or His130 in 5-LOX. These findings show, taken together, that those derivatives are good leads to potential anti-inflammatory agents with lowest gastric damage.
- Abdel-Aziz, Mohamed,Abdelhamid, Dalia,Fujita, Mikako,Gomaa, Hesham A. M.,Gouda, Ahmed M.,Hassan, Heba A.,Mohassab, Aliaa M.,Otsuka, Masami,Radwan, Mohamed O.,Youssif, Bahaa G. M.
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- STAT3 INHIBITOR CONTAINING QUINOLINECARBOXAMIDE DERIVATIVE AS ACTIVE INGREDIENT
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The present invention provides a STAT3 inhibitor containing as an active ingredient, a quinolinecarboxamide derivative represented by the formula (I) (in the formula, W represents a bond or an alkylene chain; X represents O, S, or NR34; and Rs
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Page/Page column 62
(2011/06/24)
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- NEW ACETYL COENZYME A CARBOXYLASE (ACC) INHIBITORS AND USES IN TREATMENTS OF OBESITY AND DIABETES MELLITUS - 087
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The present invention relates to Acetyl Coenzyme A Carboxylase (ACC) inhibitors according to formula (I), or an enantiomer thereof, or a pharmaceutically acceptable salt thereof, where R1, R2, R3, R4, R5, E, L, Z and n are as defined herein, to processes for preparing such compounds, to pharmaceutical compositions containing them, to the use of such inhibitors and to methods for th eir therapeutic use, particularly in the treatments of obesity and diabetes mellitus.
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Page/Page column 241
(2009/07/25)
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