- 5-MEMBERED HETEROARYLAMINOSULFONAMIDES FOR TREATING CONDITIONS MEDIATED BY DEFICIENT CFTR ACTIVITY
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The invention relates to heteroaryl compounds, pharmaceutically acceptable salts thereof, and pharmaceutical preparations thereof. Also described herein are compositions and the use of such compounds in methods of treating diseases and conditions mediated by deficient CFTR activity, in particular cystic fibrosis.
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Page/Page column 355
(2021/05/21)
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- Structure-activity relationship studies in substituted sulfamoyl benzamidothiazoles that prolong NF-κB activation
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In the face of emerging infectious diseases, there remains an unmet need for vaccine development where adjuvants that enhance immune responses to pathogenic antigens are highly desired. Using high-throughput screens with a cell-based nuclear factor κB (NF-κB) reporter assay, we identified a sulfamoyl benzamidothiazole bearing compound 1 that demonstrated a sustained activation of NF-κB after a primary stimulus with a Toll-like receptor (TLR)-4 agonist, lipopolysaccharide (LPS). Here, we explore systematic structure–activity relationship (SAR) studies on compound 1 that indicated the sites on the scaffold that tolerated modification and yielded more potent compounds compared to 1. The selected analogs enhanced release of immunostimulatory cytokines in the human monocytic cell line THP-1 cells and murine primary dendritic cells. In murine vaccination studies, select compounds were used as co-adjuvants in combination with the Food and Drug Administration approved TLR-4 agonistic adjuvant, monophosphoryl lipid A (MPLA) that showed significant enhancement in antigen-specific antibody titers compared to MPLA alone. Additionally, our SAR studies led to identification of a photoaffinity probe which will aid the target identification and mechanism of action studies in the future.
- Belsuzarri, Masiel,Carson, Dennis A.,Chan, Michael,Chu, Paul J.,Corr, Maripat,Cottam, Howard B.,Hayashi, Tomoko,Lao, Fitzgerald S.,Nan, Jason,Saito, Tetsuya,Sato-Kaneko, Fumi,Shukla, Nikunj M.,Yao, Shiyin
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- Optimization of inhibitors of the tyrosine kinase EphB4. 2. Cellular potency improvement and binding mode validation by X-ray crystallography
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Inhibition of the tyrosine kinase erythropoietin-producing human hepatocellular carcinoma receptor B4 (EphB4) is an effective strategy for the treatment of solid tumors. We have previously reported a low nanomolar ATP-competitive inhibitor of EphB4 discovered in silico by fragment-based high-throughput docking combined with explicit solvent molecular dynamics simulations. Here we present a second generation of EphB4 inhibitors that show high inhibitory potency in both enzymatic and cell-based assays while preserving the appealing selectivity profile exhibited by the parent compound. In addition, respectable levels of antiproliferative activity for these compounds have been obtained. Finally, the binding mode predicted by docking and molecular dynamics simulations is validated by solving the crystal structures of three members of this chemical class in complex with the EphA3 tyrosine kinase whose ATP-binding site is essentially identical to that of EphB4.
- Lafleur, Karine,Dong, Jing,Huang, Danzhi,Caflisch, Amedeo,Nevado, Cristina
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- 4-Aminothiazole derivatives, their preparation and their use as inhibitors of cyclin-dependent kinases
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This invention is directed to aminothiazole compounds of formula (I) wherein R1 is a substituted or unsubstituted group selected from : C1-6-alkyl; C1-6-alkenyl; C1-6-alkynyl; C1-6-alkoxyl; C1-6-alcohol; carbocyclic or heterocyclic, monocyclic or fused or non-fused polycyclic, cycloalkyl; carbocyclic or heterocyclic, monocyclic or fused or non-fused polycyclic, aryl; carbonyl; ether; (C1-6-alkyl)-carbonyl; (C1-6-alkyl)-aryl; (C1-6-alkyl)-cycloalkyl; (C1-6-alkyl)-(C1-6-alkoxyl); aryl-(C1-6-alkoxyl); thioether; thiol; and sulfonyl; wherein when R1 is substituted, each substituent independently is a halogen; haloalkyl; C1-6-alkyl; C1-6-alkenyl; C1-6-alkynyl; hydroxyl; C1-6-alkoxyl; amino; nitro; thiol, thioether; imine; cyano; amido; phosphonato; phosphine; carboxyl; thiocarbonyl; sulfonyl; sulfonamide; ketone; aldehyde; ester; oxygen; carbocyclic or heterocyclic, monocyclic or fused or non-fused polycyclic, cycloalkyl; or carbocyclic or heterocyclic, monocyclic or fused or non-fused polycyclic, aryl; and R2 is a carbocyclic or heterocyclic, monocyclic or fused or non-fused polycyclic, ring structure having a substituent at the position adjacent to the point of attachment, which ring structure is optionally further substituted, where each substituent of R2 independently is a halogen; haloalkyl; C1-6-alkyl; C1-6-alkenyl; C1-6-alkynyl; hydroxyl; C1-6-alkoxyl; amino; nitro; thiol; thioether; imine; cyano; amido; phosphonato; phosphine; carboxyl; thiocarbonyl; sulfonyl; sulfonamide; ketone; aldehyde; ester; oxygen; carbocyclic or heterocyclic, monocyclic or fused or non-fused polycyclic, cycloalkyl; or carbocyclic or heterocyclic, monocyclic or fused or non-fused polycyclic, aryl; or a pharmaceutically acceptable salt of a compound of formula (I), or a prodrug or pharmaceutically active metabolite of a compound of formula (I) or pharmaceutically acceptable salt thereof, for inhibiting cyclin-dependent kinases (CDKs), such as CDK1, CDK2, CDK4, and CDK6. The invention is also directed to the therapeutic or prophylactic use of pharmaceutical compositions containing such compounds and to methods of treating malignancies and other disorders by administering effective amounts of such compounds.
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Example C(60)
(2010/11/29)
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- Alkenyl bromides by brominative deoxygenation of ketones in one or two steps
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The conversion of ketones into alkenyl bromides is accomplished in one or two steps by 2,2,2-tribromo-2,2-dihydro-1,3,2-benzodioxaphosphole or by the dibromomethyl methyl ether prepared therefrom. Investigations of the scope and limitations provide some hints for the preparative planning and improvement.
- Von Roman,Ruhdorfer,Knorr
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p. 985 - 992
(2007/10/02)
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