- Synthesis, biological evaluation and molecular docking studies of novel 1,2,3-triazole-quinazolines as antiproliferative agents displaying ERK inhibitory activity
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ERK1/2 inhibitors have attracted special attention concerning the ability of circumventing cases of innate or log-term acquired resistance to RAF and MEK kinase inhibitors. Based on the 4-aminoquinazoline pharmacophore of kinases, herein we describe the synthesis of 4-aminoquinazoline derivatives bearing a 1,2,3-triazole stable core to bridge different aromatic and heterocyclic rings using copper-catalysed azide-alkyne cycloaddition reaction (CuAAC) as a Click Chemistry strategy. The initial screening of twelve derivatives in tumoral cells (CAL-27, HN13, HGC-27, and BT-20) revealed that the most active in BT-20 cells (25a, IC50 24.6 μM and a SI of 3.25) contains a more polar side chain (sulfone). Furthermore, compound 25a promoted a significant release of lactate dehydrogenase (LDH), suggesting the induction of cell death by necrosis. In addition, this compound induced G0/G1 stalling in BT-20 cells, which was accompanied by a decrease in the S phase. Western blot analysis of the levels of p-STAT3, p-ERK, PARP, p53 and cleaved caspase-3 revealed p-ERK1/2 and p-STA3 were drastically decreased in BT-20 cells under 25a incubation, suggesting the involvement of these two kinases in the mechanisms underlying 25a-induced cell cycle arrest, besides loss of proliferation and viability of the breast cancer cell. Molecular docking simulations using the ERK-ulixertinib crystallographic complex showed compound 25a could potentially compete with ATP for binding to ERK in a slightly higher affinity than the reference ERK1/2 inhibitor. Further in silico analyses showed comparable toxicity and pharmacokinetic profiles for compound 25a in relation to ulixertinib.
- Nunes, Paulo Sérgio Gon?alves,da Silva, Gabriel,Nascimento, Sofia,Mantoani, Susimaire Pedersoli,de Andrade, Peterson,Bernardes, Emerson Soares,Kawano, Daniel Fábio,Leopoldino, Andreia Machado,Carvalho, Ivone
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- PDIA4 INHIBITORS AND USE THEREOF FOR INHIBITING ?-CELL PATHOGENESIS AND TREATING DIABETES
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Disulfide-Isomerase A4 (PDIA4) inhibitors and use thereof for inhibiting pancreatic β-cell pathogenesis and treating diabetes are disclosed. Drug candidates that inhibit PDIA4 with IC50 values ranging from 4 μM to 300 nM are identified. The compounds are highly active in augmenting insulin secretion from pancreatic β-cells. The representative compound No. 8 (4,5-dimethoxy-2-propiolamidobenzoic acid), alone or in combination with metformin, is effective in preserving pancreatic β-cell function, treating and/or reversing, returning blood glucose concentration to a normal level in a diabetic.
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Page/Page column 23-24
(2021/06/11)
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- HETEROCYCLIC INHIBITORS OF TYROSINE KINASE
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The present disclosure relates to heterocyclic compounds and methods which may be useful as inhibitors of HER2 or EGFR for the treatment or prevention of disease, including cancer.
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Paragraph 0473
(2020/11/03)
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- Process for preparation of substituted P-aminophenol
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The present invention is related to a process of preparing substituted p-aminophenol compound of formula (I) or a salt thereof,
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Page/Page column 10; 11
(2013/08/28)
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- Stereoselective Synthesis of Bicyclic Heterocycles
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The present invention relates to a process for the stereoselective preparation of compounds of formulae (1A) and (1B) and the salts thereof, particularly the physiologically acceptable salts thereof with inorganic or organic acids and bases, which have va
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Page/Page column 10
(2011/08/06)
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- Potent and selective small molecule inhibitors of specific isoforms of Cdc2-like kinases (Clk) and dual specificity tyrosine-phosphorylation-regulated kinases (Dyrk)
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Continued examination of substituted 6-arylquinazolin-4-amines as Clk4 inhibitors resulted in selective inhibitors of Clk1, Clk4, Dyrk1A and Dyrk1B. Several of the most potent inhibitors were validated as being highly selective within a comprehensive kino
- Rosenthal, Andrew S.,Tanega, Cordelle,Shen, Min,Mott, Bryan T.,Bougie, James M.,Nguyen, Dac-Trung,Misteli, Tom,Auld, Douglas S.,Maloney, David J.,Thomas, Craig J.
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supporting information; experimental part
p. 3152 - 3158
(2011/06/24)
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- Use of structure-based design to discover a potent, selective, in vivo active phosphodiesterase 10A inhibitor lead series for the treatment of schizophrenia
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Utilizing structure-based virtual library design and scoring, a novel chimeric series of phosphodiesterase 10A (PDE10A) inhibitors was discovered by synergizing binding site interactions and ADME properties of two chemotypes. Virtual libraries were docked and scored for potential binding ability, followed by visual inspection to prioritize analogs for parallel and directed synthesis. The process yielded highly potent and selective compounds such as 16. New X-ray cocrystal structures enabled rational design of substituents that resulted in the successful optimization of physical properties to produce in vivo activity and to modulate microsomal clearance and permeability.
- Helal, Christopher J.,Kang, Zhijun,Hou, Xinjun,Pandit, Jayvardhan,Chappie, Thomas A.,Humphrey, John M.,Marr, Eric S.,Fennell, Kimberly F.,Chenard, Lois K.,Fox, Carol,Schmidt, Christopher J.,Williams, Robert D.,Chapin, Douglas S.,Siuciak, Judith,Lebel, Lorraine,Menniti, Frank,Cianfrogna, Julia,Fonseca, Kari R.,Nelson, Frederick R.,O Connor, Rebecca,MacDougall, Mary,McDowell, Laura,Liras, Spiros
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experimental part
p. 4536 - 4547
(2011/09/16)
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- Method of Synthesizing 6,7-Substituted 4-Anilino Quinazoline
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A method of synthesizing 6,7-substituted 4-anilino quinazoline employs 3,4-substituted benzoic acid as an initial reactant, and the 6,7-substituted 4-anilino quinazoline is obtained by an esterifying step, a nitrating step, a reducing step, a cyclizing step, and an one-pot reaction. In the above method, the initial reactant has low cost and yield. of the 6,7-substituted 4-anilino quinazoline is high, therefore, production cost can be reduced effectively, and competitive power of the product of the 6,7-substituted 4-anilino quinazoline can be improved.
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Page/Page column 6
(2010/11/03)
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- A PROCESS FOR THE PREPARATION OF GEFITINIB
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The present invention provides an improved, industrial advantageous process for the preparation of gefitinib of formula (I), and its pharmaceutically acceptable salts thereof in high yield and purity.
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Page/Page column 15
(2010/08/04)
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- THERAPEUTIC OXY-PHENYL-ARYL COMPOUNDS AND THEIR USE
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The present invention pertains generally to the field of therapeutic compounds, and more specifically to certain oxy phenyl aryl compounds (referred to herein as OPA compounds), as described herein, which, inter alia, inhibit Checkpoint Kinase 2 (CHK2) kinase function. The present invention also pertains to pharmaceutical compositions comprising such compounds, and the use of such compounds and compositions, both in vitro and in vivo, to inhibit CHK2 kinase function, and in the treatment of diseases and conditions that are mediated by CHK2, that are ameliorated by the inhibition of CHK2 kinase function, etc., including proliferative conditions such as cancer, etc., optionally in combination with another agent, for example, (a) a DNA topoisomerase I or II inhibitor; (b) a DNA damaging agent; (c) an antimetabolite or TS inhibitor; (d) a microtubule targeted agent; and (e) ionising radiation.
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Page/Page column 181
(2009/05/28)
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- QUINAZOLINE DERIVATIVES AS RAF KINASE MODULATORS AND METHODS OF USE THEREOF
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Compounds according to formula (I), compositions and methods are provided for modulating the activity of RAF kinases, including BRAF kinase and for the treatment, prevention, or amelioration of one or more symptoms of disease or disorder mediated by RAF kinases. Formula (I): or a pharmaceutically acceptable salt, solvate, clathrate of hydrate thereof, wherein X is O or S(O)t; Ra is O or S.
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Page/Page column 173
(2009/10/22)
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- PROCESS FOR THE PREPARATION OF GEFITINIB
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There is provided a compound of formula (III), and a process for preparing a compound of formula (V) comprising converting a compound of formula (III) to the compound (V), wherein (X) is fluoro, chloro, bromo or iodo. There is also provided a process for preparing a compound of formula (Xl) comprising converting a compound of formula (X) to the compound (Xl). The compounds (V) and (Xl) so prepared may be used in a process for preparing gefitinib.
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Page/Page column 26
(2008/12/08)
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- HETEROAROMATIC QUINOLINE-BASED COMPOUNDS
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The invention pertains to heteroaromatic compounds that serve as effective phosphodiesterase (PDE) inhibitors. The invention also relates to compounds which are selective inhibitors of PDE10. The invention further relates to intermediates for preparation of such compounds; pharmaceutical compositions comprising such compounds; and the use of such compounds in methods for treating certain central nervous system (CNS) or other disorders. The invention relates also to methods for treating neurodegenerative and psychiatric disorders, for example psychosis and disorders comprising deficient cognition as a symptom.
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Page/Page column 28
(2010/11/30)
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- Quinoline and quinazoline compounds useful in therapy
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Compounds of formula I, wherein R1 represents C1-4 alkoxy optionally substituted by one or more fluorine atoms; R2 represents an aryl group or a heteroaryl group, optionally substituted by C1-4 alkyl or SO2
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