- Synthesis and biological evaluation of 6-(pyrimidin-4-yl)-1H-pyrazolo[4,3-b]pyridine derivatives as novel dual FLT3/CDK4 inhibitors
-
FMS-like tyrosine kinase-3 (FLT3) and cyclin-dependent kinase 4/6 (CDK4/6) inhibitors have been proven to play a significant role in tumor therapy. Herein, based on the previously reported JAK2/FLT3 inhibitor 18e, we described the synthesis, structure–activity relationship and biological evaluation of a series of unique 6-(pyrimidin-4-yl)-1H-pyrazolo[4,3-b]pyridine derivatives that inhibited FLT3 and CDK4 kinases. The optimized compound 23k exhibited low nanomolar range activities with IC50 values of 11 and 7 nM for FLT3 and CDK4, respectively. In the MV4-11 xenograft tumor model, the tumor growth inhibition rate of 23k dosed at 200 mg/kg was 67%, suggesting that 23k possessed an antitumor therapeutic effect.
- Chen, Lijuan,Chen, Yong,Deng, Dexin,Fu, Suhong,Guo, Yong,Hu, Mengshi,Li, Xiandeng,Liu, Kongjun,Peng, Bin,Si, Wenting,Tan, Yan,Tang, Minghai,Wang, Huan,Yang, Tao,Yang, Yingxue,Yang, Zhuang,Zhang, Chufeng
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- Discovery of Dual CDK6/PIM1 Inhibitors with a Novel Structure, High Potency, and Favorable Druggability for the Treatment of Acute Myeloid Leukemia
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Nowadays, the simultaneous inhibition of two or more pathways plays an increasingly important role in cancer treatment due to the complex and diverse pathogenesis of cancer, and the combination of the cyclin-dependent kinase 6 (CDK6) inhibitor and PIM1 inhibitor was found to generate synergistic effects in acute myeloid leukemia (AML) treatment. Therefore, we discovered a novel lead 1 targeting CDK6/PIM1 via pharmacophore-based and structure-based virtual screening, synthesized five different series of new derivates, and obtained a potent and balanced dual CDK6/PIM1 inhibitor 51, which showed high kinase selectivity. Meanwhile, 51 displayed an excellent safety profile and great pharmacokinetic properties. Furthermore, 51 displayed stronger potency in reducing the burden of AML than palbociclib and SMI-4a in vivo. In summary, we offered a new direction for AML treatment and provided a great lead compound for AML preclinical studies.
- Yuan, Kai,Ji, Minghui,Xie, Shengnan,Qiu, Zhixia,Chen, Weijiao,Min, Wenjian,Xia, Fei,Zheng, Mingming,Wang, Xiao,Li, Jiaxing,Hou, Yi,Kuang, Wenbin,Wang, Liping,Gu, Wanjian,Li, Zhiyu,Yang, Peng
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p. 857 - 875
(2022/01/12)
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- DERIVATIVES OF 4-(IMIDAZO[L,2-A]PYRIDIN-3-YL)-N-(PYRIDINYL)PYRIMIDIN- 2-AMINE AS THERAPEUTIC AGENTS
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A novel class of heteroaryl compounds for use in the prevention and/or treatment of proliferative diseases and conditions including cancers. The compounds are considered to be capable of inhibiting cell proliferation by inhibiting the activity of FLT3 and its mutant forms and/or other protein kinases such as CDKs. The compounds have the general structure I:
- -
-
Paragraph 0083; 0089; 00137-00138
(2021/01/29)
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- Anti-cancer quinoxaline pyrimidinamine heterocyclic compound as well as preparation method and application thereof
-
The invention discloses an anti-cancer quinoxaline pyrimidinamine heterocyclic compound and a preparation method and application thereof, the structure of the compound is shown as a formula (S), and X is selected from C (O) or (CH2) n; n is 0 or 1; R1 is selected from hydrogen and C1-C8 alkyl; R2 is selected from hydrogen, C1-C8 alkyl, morpholine ring or-NR5R6, and R5 and R6 are selected from hydrogen and C1-C8 alkyl; R3 is selected from hydrogen, methoxyl and halogen; and R4 is selected from hydrogen, C1-C8 alkyl,-S (O) 2Me and-C (O) OC1-C3. The invention also discloses a preparation method and application of the compound.
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-
Paragraph 0108-0109; 0134-0136
(2021/07/21)
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- CDK6 inhibitor of pyrimidine benzo six-membered ring mother nucleus as well as preparation method and application of CDK6 inhibitor
-
The invention discloses a CDK6 inhibitor of a pyrimidine benzo six-membered ring mother nucleus and a preparation method and application of the CDK6 inhibitor, the compound structure of the CDK6 inhibitor is shown as a formula (C), and A is selected from O, C (O) or-NR1; R1 is selected from hydrogen or C1-C8 alkyl; B is selected from O or C; X is selected from C, C (O) or-NR2; R2 is selected from hydrogen or C1-C8 alkyl; Y is selected from C (O) or (CH2) n; n is 0 or 1; and Z is selected from hydrogen, C1-C8 alkyl or-C (O) OC1-C3. The invention also discloses a preparation method and application of the compound.
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Paragraph 0048; 0068; 0071-0075
(2021/08/19)
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- HPK1 ANTAGONISTS AND USES THEREOF
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The present invention provides compounds, compositions thereof, and methods of using the same for the inhibition of HPK1, and the treatment of HPK1-mediated disorders.
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-
Paragraph 0452; 0454; 0455; 0456
(2021/03/19)
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- FUSED PYRIMIDINE PYRIDINONE COMPOUNDS AS JAK INHIBITORS
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The disclosure provides compounds of formula (I), or a pharmaceutically-acceptable salt thereof, wherein the variables are defined in the specification, that are inhibitors of JAK kinases, particularly JAK3. The disclosure also provides pharmaceutical compositions comprising such compounds, and methods of using such compounds to treat gastrointestinal inflammatory diseases.
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- Discovery of a Pyrimidothiazolodiazepinone as a Potent and Selective Focal Adhesion Kinase (FAK) Inhibitor
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Focal adhesion kinase (FAK) is a tyrosine kinase with prominent roles in protein scaffolding, migration, angiogenesis, and anchorage-independent cell survival and is an attractive target for the development of cancer therapeutics. However, current FAK inhibitors display dual kinase inhibition and/or significant activity on several kinases. Although multitargeted activity is at times therapeutically advantageous, such behavior can also lead to toxicity and confound chemical-biology studies. We report a novel series of small molecules based on a tricyclic pyrimidothiazolodiazepinone core that displays both high potency and selectivity for FAK. Structure-activity relationship (SAR) studies explored modifications to the thiazole, diazepinone, and aniline "tail,"which identified lead compound BJG-03-025. BJG-03-025 displays potent biochemical FAK inhibition (IC50 = 20 nM), excellent kinome selectivity, activity in 3D-culture breast and gastric cancer models, and favorable pharmacokinetic properties in mice. BJG-03-025 is a valuable chemical probe for evaluation of FAK-dependent biology.
- Groendyke, Brian J.,Nabet, Behnam,Mohardt, Mikaela L.,Zhang, Haisheng,Peng, Ke,Koide, Eriko,Coffey, Calvin R.,Che, Jianwei,Scott, David A.,Bass, Adam J.,Gray, Nathanael S.
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- Pyrimidine-2, 4-diamine compound and preparation method and application thereof
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The invention discloses a pyrimidine-2, 4-diamine compound and a preparation method and application thereof, and relates to the technical field of medicinal chemistry, the pyrimidine-2, 4-diamine compound can be used for biological or pharmacological phenomena, cathepsin C participated signal channel conduction research, and evaluation of a novel cathepsin C inhibitor; in addition, through in-vitro and in-vivo anti-cathepsin C activity screening, the results show that the compound has relatively strong inhibitory activity on cathepsin C; through in-vivo anti-neutrophil serine protease activity screening, the result shows that the compound has relatively strong inhibitory activity on neutrophil serine protease; in-vivo anti-inflammatory activity screening results show that the compound has an effective treatment effect on an inflammatory disease model; meanwhile, the toxicity is low, and the application prospect is good.
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- Discovery and in Vivo Anti-inflammatory Activity Evaluation of a Novel Non-peptidyl Non-covalent Cathepsin C Inhibitor
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Cathepsin C (Cat C) participates in inflammation and immune regulation by affecting the activation of neutrophil serine proteases (NSPs). Therefore, cathepsin C is an attractive target for treatment of NSP-related inflammatory diseases. Here, the complete discovery process of the first potent "non-peptidyl non-covalent cathepsin C inhibitor"was described with hit finding, structure optimization, and lead discovery. Starting with hit 14, structure-based optimization and structure-activity relationship study were comprehensively carried out, and lead compound 54 was discovered as a potent drug-like cathepsin C inhibitor both in vivo and in vitro. Also, compound 54 (with cathepsin C Enz IC50 = 57.4 nM) exhibited effective anti-inflammatory activity in an animal model of chronic obstructive pulmonary disease. These results confirmed that the non-peptidyl and non-covalent derivative could be used as an effective cathepsin C inhibitor and encouraged us to continue further drug discovery on the basis of this finding.
- Chen, Xing,Yan, Yaoyao,Zhang, Zhaoyan,Zhang, Faming,Liu, Mingming,Du, Leran,Zhang, Haixia,Shen, Xiaobao,Zhao, Dahai,Shi, Jing Bo,Liu, Xinhua
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p. 11857 - 11885
(2021/09/02)
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- Discovery and SARs of 5-Chloro- N4-phenyl- N2-(pyridin-2-yl)pyrimidine-2,4-diamine Derivatives as Oral Available and Dual CDK 6 and 9 Inhibitors with Potent Antitumor Activity
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Cyclin-dependent kinases (CDKs) are promising therapeutic targets for cancer therapy. Herein, we describe our efforts toward the discovery of a series of 5-chloro-N4-phenyl-N2-(pyridin-2-yl)pyrimidine-2,4-diamine derivatives as dual CDK6 and 9 inhibitors. Intensive structural modifications lead to the identification of compound 66 as the most active dual CDK6/9 inhibitor with balancing potency against these two targets and good selectivity over CDK2. Further biological studies revealed that compound 66 was directly bound to CDK6/9, resulting in suppression of their downstream signaling pathway and inhibition of cell proliferation by blocking cell cycle progression and inducing cellular apoptosis. More importantly, compound 66 significantly inhibited tumor growth in a xenograft mouse model with no obvious toxicity, indicating the promising therapeutic potential of CDK6/9 dual inhibitors for cancer treatment. Therefore, the above results are of great importance in the development of dual CDK6/9 inhibitors for cancer therapy.
- Wang, Yang,Chen, Xing,Yan, Yaoyao,Zhu, Xiaochen,Liu, Mingming,Liu, Xinhua
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p. 3327 - 3347
(2020/04/08)
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- 5-chloro-pyrimidine-2, 4-diamine compound as well as preparation method and application thereof
-
The invention discloses a 5-chloro-pyrimidine-2, 4-diamine compound as well as a preparation method and an application thereof. The 5-chloro-pyrimidine-2, 4-diamine compound is shown as a formula (I)or a formula (II), wherein R1 is selected from any one g
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- Streamlined Synthesis of Diaminopyridines by Pd-Catalyzed Ammonia Coupling with Deactivated Amino-Chloropyridines
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An efficient and cost-effective two-step synthesis of diaminopyridines, fundamental building blocks of biologically active compounds, is reported. The advantages over previously reported routes include cost and wider availability of the bromo-chloropyridine starting materials and the straightforward accessibility to an extended array of diaminopyridine regioisomers. The key enabler of this synthetic strategy is the development of an unprecedented palladium-catalyzed coupling reaction of ammonia with chloropyridines deactivated by the presence of an alkylamino substituent. The coupling reaction was accomplished with very low catalyst loadings under remarkably mild reaction conditions, making the system particularly suitable for both academic and industrial applications. The utility of this methodology is exemplified by the application to the synthesis of highly relevant scaffolds, including the synthetic intermediates of the marketed drugs Ribociclib and Palbociclib.
- Bourriquen, Florian,Bruneau-Voisine, Antoine,Jeandin, Aliénor,Stihle, Etienne,Fantasia, Serena
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p. 9006 - 9011
(2019/06/24)
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- PYRIMIDINE TBK/IKKε INHIBITOR COMPOUNDS AND USES THEREOF
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The present invention relates to compounds of Formula I and pharmaceutically acceptable compositions thereof, useful as TBK/IKKε inhibitors.
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- HETEROCYCLIC COMPOUNDS FOR THE TREATMENT OF ABNORMAL CELLULAR PROLIFERATION
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This invention is in the area of heterocyclic-based compounds for the treatment of disorders involving abnormal cellular proliferation, including but not limited to tumors and cancers.
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- Pyrimidine and pyrimidine dione CDK4/6 kinase inhibitors and uses thereof
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The invention belongs to the field of chemical medicine, relates to pyrimidine and pyrimidine dione CDK4/6 kinase inhibitor and its application, the pyrimidine and pyrimidine dione CDK4/6 kinase inhibitors of formula I shown in the compound or its pharmaceutically acceptable salt, and pharmaceutical compositions containing these compounds and these compounds or compositions of the pharmaceutical preparation in the application, the present invention provides a pyrimidine and pyrimidine dione compounds to CDK4 and CDK6 kinase has better inhibition activity, to breast cancer cell has significant inhibition function, can effectively reduce the incidence of tumor, extension of the tumor to the lives of patients,
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-
Paragraph 0085; 0086; 0087; 0088
(2018/07/30)
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- Antimalarial Lead-Optimization Studies on a 2,6-Imidazopyridine Series within a Constrained Chemical Space to Circumvent Atypical Dose-Response Curves against Multidrug Resistant Parasite Strains
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A lead-optimization program around a 2,6-imidazopyridine scaffold was initiated based on the two early lead compounds, 1 and 2, that were shown to be efficacious in an in vivo humanized Plasmodium falciparum NODscidIL2Rγnull mouse malaria infection model. The observation of atypical dose-response curves when some compounds were tested against multidrug resistant malaria parasite strains guided the optimization process to define a chemical space that led to typical sigmoidal dose-response and complete kill of multidrug resistant parasites. After a structure and property analysis identified such a chemical space, compounds were prepared that displayed suitable activity, ADME, and safety profiles with respect to cytotoxicity and hERG inhibition.
- Le Manach, Claire,Paquet, Tanya,Wicht, Kathryn,Nchinda, Aloysius T.,Brunschwig, Christel,Njoroge, Mathew,Gibhard, Liezl,Taylor, Dale,Lawrence, Nina,Wittlin, Sergio,Eyermann, Charles J.,Basarab, Gregory S.,Duffy, James,Fish, Paul V.,Street, Leslie J.,Chibale, Kelly
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p. 9371 - 9385
(2018/10/24)
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- A highly potent CDK4/6 inhibitor was rationally designed to overcome blood brain barrier in gliobastoma therapy
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Glioblastoma multiforme (GBM) is the most common and deadliest of malignant brain tumors in adults. Disease development is associated with dysregulation of the cyclin D-CDK4/6-INK4-Rb pathway, resulting in increased proliferation; thus, CDK4/6 kinase inhibitors are promising candidates for GBM treatment. The recently developed CDK4/6 inhibitors, palbociclib, ribociclib, and abemaciclib, are effective in subcutaneous glioma models, but their blood-brain barrier (BBB) permeability is poor, limiting drug delivery to the central nervous system. Here, we designed and synthesized a series of novel CDK4/6 inhibitors with favorable BBB permeability for the treatment of GBM. Compound 11 exhibited a favorable pharmacological profile and significant penetration of the BBB with the Kp value of 4.10 and the Kp,uu value of 0.23 in mice after an oral dose of 10 mg/kg. IC50 values for CDK4/cyclin D1 and CDK6/cyclin D3 were 3 nM and 1 nM, respectively. In vivo studies with an orthotopic xenograft mouse model of GBM showed that 11 had tumor growth inhibition values ranging from 62% to 99% for doses ranging from 3.125 to 50 mg/kg, and no significant body weight loss was observed. The increase in life span based on the median survival time of vehicle-treated animals in mice administered a dose of 50 mg/kg was significant at 162% (p 0.0001). These results suggest that compound 11 is a promising candidate for further investigation as an effective drug for the treatment of GBM.
- Yin, Lei,Li, Heng,Liu, Wenjian,Yao, Zhenglin,Cheng, Zhenzhen,Zhang, Huabei,Zou, Hui
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-
- ANTIPROLIFERATIVE PYRIMIDINE-BASED COMPOUNDS
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This invention is in the area of pyrimidine-based compounds for the treatment of disorders involving abnormal cellular proliferation, including but not limited to tumors and cancers.
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- PYRIMIDINE-BASED ANTIPROLIFERATIVE AGENTS
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This invention is in the area of pyrimidine-based compounds for the treatment of disorders involving abnormal cellular proliferation, including but not limited to tumors and cancers.
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- PYRIMIDINE-BASED COMPOUNDS FOR THE TREATMENT OF CANCER
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This invention is in the area of pyrimidine-based compounds for the treatment of disorders involving abnormal cellular proliferation, including but not limited to tumors and cancers.
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- Discovery and pharmacological characterization of a novel series of highly selective inhibitors of cyclin-dependent kinases 4 and 6 as anticancer agents
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Background and Purpose: Cyclin D-dependent kinases 4 and 6 (CDK4/6) are crucial regulators of the G1 to S phase transition of the cell cycle and are actively pursued as therapeutic targets in cancer. We sought to discover a novel series of orally bioavailable and highly selective small molecule inhibitors of CDK4/6. Experimental Approach: The discovery of pharmacological inhibitors and optimization for potency, selectivity and drug properties were achieved by iterative chemical synthesis, biochemical screening against a panel of kinases, cell-based assays measuring cellular viability, cell cycle distribution, induction of apoptosis and the level of retinoblastoma tumour suppressor protein (Rb) phosphorylation and E2 factor (E2F)-regulated gene expression and in vitro biopharmaceutical and in vivo pharmacokinetic profiling. Key Results: We discovered several lead compounds that displayed >1000-fold selectivity for CDK4/6 over other members of the CDK family. The lead compounds, 82, 91 and 95, potently inhibited the growth of cancer cells by inducing G1 arrest with a concomitant reduction in the phosphorylation of Rb at S780 and in E2F-regulated gene expression. With a remarkable selectivity for CDK4 over 369 human protein kinases, 91 was identified as a highly potent and orally bioavailable drug candidate. Conclusions and Implications: We have identified unique and new inhibitors of CDK4/6 as potential drug candidates. Compound 91 represents an ideal candidate for further development as targeted cancer therapy.
- Tadesse, Solomon,Bantie, Laychiluh,Tomusange, Khamis,Yu, Mingfeng,Islam, Saiful,Bykovska, Nataliya,Noll, Benjamin,Zhu, Ge,Li, Peng,Lam, Frankie,Kumarasiri, Malika,Milne, Robert,Wang, Shudong
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p. 2399 - 2413
(2018/05/14)
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- Synthesis and SAR of 4,5-dihydro-1H-pyrazolo[4,3-h]quinazoline derivatives as potent and selective CDK4/6 inhibitors
-
CDK4/6 pathway is an attractive target for development of anti-cancer drugs. Herein, we reported the design and synthesis of a series of 4,5-dihydro-1H-pyrazolo [4,3-h]quinazoline derivatives as selective CDK4/6 inhibitors. Applied with the optimizing strategy to the initial scaffold, it is found that compound 13n is able to selectively inhibit CDK4 and CDK6 with IC50 values 0.01 and 0.026 μM, respectively. The compound showed good anti-proliferative activity when tested in a panel of tumor cell lines with CDK4/6 related mechanism of action, the results clearly suggest that compound 13n works much better than Ly2385219 which is a selective CDK4/6 inhibitor. This compound was also found to have favorable pharmacokinetic parameters. Taken together, compound 13n could be selected for further preclinical evaluation.
- Zhao, Hui,Hu, Xiaoxia,Cao, Kai,Zhang, Yue,Zhao, Kuantao,Tang, Chunlei,Feng, Bainian
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p. 935 - 945
(2018/09/04)
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- Benzimidazole derivatives, preparation methods and uses theirof
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The present invention relates to benzimidazole compounds useful in treating for protein kinase-associated disorders. There is also a need for compounds useful in the treatment or prevention of one or more symptoms of cancer, transplant rejections. Furthermore, there is a need for methods for modulating the activity of protein kinases, such as CDK4 and/or CDK6, using the compounds provided herein.
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- TRK INHIBITION
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The present invention relates to the use of substituted pyrimidine derivatives to modulate tropomyosin-related kinase (Trk) family protein kinase, and the use of the substituted pyrimidine derivatives for the treatment of pain, inflammation, cancer, restenosis, atherosclerosis, psoriasis, thrombosis, a disease, disorder, injury, or malfunction relating to dysmyelination or demyelination or a disease or disorder associated with abnormal activities of nerve growth factor (NGF) receptor TrkA.
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-
Paragraph 0157-0158
(2019/01/04)
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- Copper-catalyzed selective C-N bond formation with 2-amino, 2-hydroxy and 2-bromo-5-halopyridine
-
A copper-catalyzed 1,2-diol amination at the electron-rich C-5 position of unprotected 2-amino/2-hydroxy-5-halopyridine provided excellent yields. Selective amination preferably at C-5 in 2-bromo-5-iodopyridine was achieved under the same conditions. The selective, generally mild and economical coupling reaction at C-5 position described herein could be achieved with amines, heterocycles and amides.
- Roy, Swarnali,Paul, Barnali,Mukherjee, Ayan,Kundu, Biswajit,Talukdar, Arindam
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p. 44366 - 44370
(2017/09/26)
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- 2,4-dibasic miazines compound
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The invention belongs to the field of medical chemistry, relates to a 2,4-dibasic miazines compound and specifically relates to a compound shown as formula (I) or a pharmaceutically acceptable salt thereof, a drug compound thereof and an application thereof in treating EGFR or/and ALK mediated diseases.
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- Highly Potent, Selective, and Orally Bioavailable 4-Thiazol-N-(pyridin-2-yl)pyrimidin-2-amine Cyclin-Dependent Kinases 4 and 6 Inhibitors as Anticancer Drug Candidates: Design, Synthesis, and Evaluation
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Cyclin D dependent kinases (CDK4 and CDK6) regulate entry into S phase of the cell cycle and are validated targets for anticancer drug discovery. Herein we detail the discovery of a novel series of 4-thiazol-N-(pyridin-2-yl)pyrimidin-2-amine derivatives as highly potent and selective inhibitors of CDK4 and CDK6. Medicinal chemistry optimization resulted in 83, an orally bioavailable inhibitor molecule with remarkable selectivity. Repeated oral administration of 83 caused marked inhibition of tumor growth in MV4-11 acute myeloid leukemia mouse xenografts without having a negative effect on body weight and showing any sign of clinical toxicity. The data merit 83 as a clinical development candidate.
- Tadesse, Solomon,Yu, Mingfeng,Mekonnen, Laychiluh B.,Lam, Frankie,Islam, Saiful,Tomusange, Khamis,Rahaman, Muhammed H.,Noll, Benjamin,Basnet, Sunita K. C.,Teo, Theodosia,Albrecht, Hugo,Milne, Robert,Wang, Shudong
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p. 1892 - 1915
(2017/03/17)
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- BTK INHIBITOR
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Provided are a series of BTK inhibitors, and specifically disclosed are a compound, pharmaceutically acceptable salt thereof, tautomer thereof or prodrug thereof represented by formula (I), (II), (III) or (IV).
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- COMBINATIONS AND DOSING REGIMES TO TREAT RB-POSITIVE TUMORS
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This invention directed to methods for treating select RB-positive cancers and other Rb- positive abnormal cellular proliferative disorders using CDK4/6 inhibitors in specific dosing and combination or alternation regimes. In one aspect, treatments of select RB-positive cancers are disclosed using specific CDK4/6 inhibitors in combination or alternation with another chemotherapeutic, for example, an additional kinase inhibitor, PD-1 inhibitor, or BCL-2 inhibitor, or combination thereof.
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- TREATMENT OF RB-NEGATIVE TUMORS USING TOPOISOMERASE INHIBITORS IN COMBINATION WITH CYCLIN DEPENDENT KINASE 4/6 INHIBITORS
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This invention is in the area of improved therapeutic combinations for and methods of treating selected retinoblastoma (Rb)-negative cancers and Rb-negative abnormal cellular proliferative disorders using particular topoisomerase inhibitors and specific c
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- Design, synthesis and evaluation of novel 5-phenylpyridin-2(1H)-one derivatives as potent reversible Bruton's tyrosine kinase inhibitors
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A series of novel reversible Btk inhibitors has been designed based on the structure of the recently reported preclinical drug RN486. The synthesis and SAR of these compounds are described. Among these derivatives, compound 16b was identified to be a potent and orally available reversible agent with satisfactory Btk enzymatic and cellular inhibition in vitro, as well as favorable PK properties and inhibition of arthritis in vivo.
- Zhao, Xinge,Xin, Minhang,Huang, Wei,Ren, Yanliang,Jin, Qiu,Tang, Feng,Jiang, Hailong,Wang, Yazhou,Yang, Jie,Mo, Shifu,Xiang, Hua
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p. 348 - 364
(2015/02/05)
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- Structure-based drug design of RN486, a potent and selective Bruton's tyrosine kinase (BTK) inhibitor, for the treatment of rheumatoid arthritis
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Structure-based drug design was used to guide the optimization of a series of selective BTK inhibitors as potential treatments for Rheumatoid arthritis. Highlights include the introduction of a benzyl alcohol group and a fluorine substitution, each of which resulted in over 10-fold increase in activity. Concurrent optimization of drug-like properties led to compound 1 (RN486) (J. Pharmacol. Exp. Ther. 2012, 341, 90), which was selected for advanced preclinical characterization based on its favorable properties.
- Lou, Yan,Han, Xiaochun,Kuglstatter, Andreas,Kondru, Rama K.,Sweeney, Zachary K.,Soth, Michael,McIntosh, Joel,Litman, Renee,Suh, Judy,Kocer, Buelent,Davis, Dana,Park, Jaehyeon,Frauchiger, Sandra,Dewdney, Nolan,Zecic, Hasim,Taygerly, Joshua P.,Sarma, Keshab,Hong, Junbae,Hill, Ronald J.,Gabriel, Tobias,Goldstein, David M.,Owens, Timothy D.
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p. 512 - 516
(2015/03/03)
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- MULTIPLE KINASE PATHWAY INHIBITORS
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Kinase with inhibitory activity against kinases disposed in multiple signaling pathways and their therapeutic uses.
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- Discovery of 8-cyclopentyl-2-[4-(4-methyl-piperazin-1-yl)-phenylamino]-7- oxo-7,8-dihydro-pyrido[2,3- d ]pyrimidine-6-carbonitrile (7x) as a potent inhibitor of cyclin-dependent kinase 4 (CDK4) and AMPK-related kinase 5 (ARK5)
-
The success of imatinib, a BCR-ABL inhibitor for the treatment of chronic myelogenous leukemia, has created a great impetus for the development of additional kinase inhibitors as therapeutic agents. However, the complexity of cancer has led to recent interest in polypharmacological approaches for developing multikinase inhibitors with low toxicity profiles. With this goal in mind, we analyzed more than 150 novel cyano pyridopyrimidine compounds and identified structure-activity relationship trends that can be exploited in the design of potent kinase inhibitors. One compound, 8-cyclopentyl-2-[4-(4-methyl- piperazin-1-yl)-phenylamino]-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidine-6- carbonitrile (7x), was found to be the most active, inducing apoptosis of tumor cells at a concentration of approximately 30-100 nM. In vitro kinase profiling revealed that 7x is a multikinase inhibitor with potent inhibitory activity against the CDK4/CYCLIN D1 and ARK5 kinases. Here, we report the synthesis, structure-activity relationship, kinase inhibitory profile, in vitro cytotoxicity, and in vivo tumor regression studies by this lead compound.
- Reddy, M. V. Ramana,Akula, Balireddy,Cosenza, Stephen C.,Athuluridivakar, Saikrishna,Mallireddigari, Muralidhar R.,Pallela, Venkat R.,Billa, Vinay K.,Subbaiah, D. R. C. Venkata,Bharathi, E. Vijaya,Vasquez-Del Carpio, Rodrigo,Padgaonkar, Amol,Baker, Stacey J.,Reddy, E. Premkumar
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p. 578 - 599
(2014/03/21)
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- 3-(ARYL- OR HETEROARYL-AMINO)-7-(3,5-DIMETHOXYPHENYL)ISOQUINOLINE DERIVATIVES AS FGFR INHIBITORS USEFUL FOR THE TREATMENT OF PROLIFERATIVE DISORDERS OR DYSPLASIA
-
The invention relates to compounds of formula (I) wherein R1, R2, R2a, R3 have the meaning as cited in the description and the claims. Said compounds are useful as FGFR inhibitors. The invention also relates to
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- TRANSIENT PROTECTION OF NORMAL CELLS DURING CHEMOTHERAPY
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This invention is in the area of improved compounds, compositions and methods of transiently protecting healthy cells, and in particular hematopoietic stem and progenitor cells (HSPC) as well as renal cells, from damage associated with DNA damaging chemotherapeutic agents. In one aspect, improved protection of healthy cells is disclosed using disclosed compounds that act as highly selective and short, transiently-acting cyclin-dependent kinase 4/6 (CDK 4/6) inhibitors when administered to subjects undergoing DNA damaging chemotherapeutic regimens for the treatment of proliferative disorders.
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- CDK INHIBITORS
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Compounds of formulae I, II or III, and pharmaceutically acceptable salts thereof, are useful as CDK inhibitors.
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- Inhibitors of Bruton's Tyrosine Kinase
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This application discloses 6-(2-Hydroxymethyl-phenyl)-2-methyl-2H-pyridazin-3-one derivatives according to generic Formula I: wherein, variables X, R, and Y4, are defined as described herein, which inhibit Btk. The compounds disclosed herein are useful to modulate the activity of Btk and treat diseases associated with excessive Btk activity. The compounds are further useful to treat inflammatory and auto immune diseases associated with aberrant B-cell proliferation, such as rheumatoid arthritis. Also disclosed are compositions containing compounds of Formula I and at least one carrier, diluent or excipient.
- -
-
Page/Page column 115
(2012/03/08)
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- PYRIDONE AND AZA-PYRIDONE COMPOUNDS AND METHODS OF USE
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Pyridone and aza-pyridone compounds of Formula I are provided, including stereoisomers, tautomers, and pharmaceutically acceptable salts thereof, useful for inhibiting Btk kinase, and for treating immune disorders such as inflammation mediated by Btk kinase. Methods of using compounds of Formula I for in vitro, in situ, and in vivo diagnosis, and treatment of such disorders in mammalian cells, or associated pathological conditions, are disclosed.
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- 4-(pyrazol-4-yl)-pyrimidines as selective inhibitors of cyclin-dependent kinase 4/6
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Identification and structure-guided optimization of a series of 4-(pyrazol-4-yl)-pyrimidines as selective CDK4/6 inhibitors is reported herein. Several potency and selectivity determinants were established based on the X-ray crystallographic analysis of representative compounds bound to monomeric CDK6. Significant selectivity for CDK4/6 over CDK1 and CDK2 was demonstrated with several compounds in both enzymatic and cellular assays.
- Cho, Young Shin,Borland, Maria,Brain, Christopher,Chen, Christine H.-T.,Cheng, Hong,Chopra, Rajiv,Chung, Kristy,Groarke, James,He, Guo,Hou, Ying,Kim, Sunkyu,Kovats, Steven,Lu, Yipin,O'Reilly, Marc,Shen, Junqing,Smith, Troy,Trakshel, Gary,V?gtle, Markus,Xu, Mei,Xu, Ming,Sung, Moo Je
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p. 7938 - 7957
(2011/03/19)
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- Inhibitors of Bruton's Tyrosine Kinase
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This application discloses 5-phenyl-1H-pyridin-2-one, 6-phenyl-2H-pyridazin-3-one, and 5-Phenyl-1H-pyrazin-2-one derivatives according to generic Formulae I-III: wherein, variables Q, R, X, X′, Y1, Y2, Y2′, Y3, Y4, Y5, m, and n are defined as described herein, which inhibit Btk. The compounds disclosed herein are useful to modulate the activity of Btk and treat diseases associated with excessive Btk activity. The compounds are further useful to treat inflammatory and auto immune diseases associated with aberrant B-cell proliferation such as rheumatoid arthritis. Also disclosed are compositions containing compounds of Formulae I-III and at least one carrier, diluent or excipient.
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Page/Page column 86
(2010/09/07)
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- Pyrrolopyrimidine Compounds and Their Uses
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The present application describes organic compounds that are useful for the treatment, prevention and/or amelioration of diseases, particularly pyrrolopyrimidine compounds and derivatives are described which inhibit protein kinases. The organic compounds are useful in treating proliferative disease.
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Page/Page column 47
(2009/12/28)
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- NOVEL PYRIDINONES AND PYRIDAZINONES
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This application discloses 5-phenyl-1H-pyridin-2-one and 6-phenyl-2H-pyridazin-3-one deriva-tives according to generic Formulae I-III : wherein, variables R, X, Y1, Y2, Y3, Y4, n and m are defined as described herein, which inhibit Btk. The compounds disclosed herein are useful to modulate the activity of Btk and treat diseases associated with excessive Btk activity. The compounds are further useful to treat in-flammatory and auto immune diseases associated with aberrant B-cell proliferation such as rheumatoid arthritis. Also disclosed are compositions containing compounds of Formulae I-III and at least one carrier, diluent or excipient.
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Page/Page column 63
(2009/10/09)
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- 4-(Phenylaminomethylene)isoquinoline-1,3(2H,4H)-diones as potent and selective inhibitors of the cyclin-dependent kinase 4 (CDK4)
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The cyclin-dependent kinases (CDKs), as complexes with their respective partners, the cyclins, are critical regulators of cell cycle progression. Because aberrant regulations of CDK4/cyclin D1 lead to uncontrolled cell proliferation, a hallmark of cancer, small-molecule inhibitors of CDK4/cyclin D1 are attractive as prospective antitumor agents. The series of 4-(phenylaminomethylene)isoquinoline-1,3(2H,4H)-dione derivatives reported here represents a novel class of potent inhibitors that selectively inhibit CDK4 over CDK2 and CDK1 activities. In the headpiece of the 4-(phenylaminomethylene) isoquinoline-1,3(2H,4H)-dione, a basic amine substitutent is required on the aniline ring for the CDK4 inhibitory activity. The inhibitory activity is further enhanced when an aryl or heteroaryl substituent is introduced at the C-6 position of the isoquinoline-1,3(2H,4H)-dione core. We present here SAR data and a CDK4 mimic model that explains the binding, potency, and selectivity of our CDK4 selective inhibitors.
- Tsou, Hwei-Ru,Otteng, Mercy,Tran, Tritin,Floyd Jr., M. Brawner,Reich, Marvin,Birnberg, Gary,Kutterer, Kristina,Ayral-Kaloustian, Semiramis,Ravi, Malini,Nilakantan, Ramaswamy,Grillo, Mary,McGinnis, John P.,Rabindran, Sridhar K.
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experimental part
p. 3507 - 3525
(2009/04/07)
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- Polycyclic thiazoles as potassium ion channel modulators
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The present invention provides a genus of polycyclic thiazoles that are useful as modulators of potassium ion channels. The modulators of the invention are of use in both therapeutic and diagnostic methods.
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Page/Page column 14
(2008/06/13)
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- Antiproliferative 2-(heteroaryl)-aminothiazole compounds and pharmaceutical compositions, and methods for their use
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Compounds represented by the Formula (I): are described. The compounds and pharmaceutical compositions containing them may be used in inhibiting and/or modulating protein kinases, in treating or preventing diseases associated with protein kinases, and/or in treating or preventing cellular proliferative diseases.
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Page/Page column 29
(2010/02/10)
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- POLYCYCLIC PYRIMIDINES AS POTASSIUM ION CHANNEL MODULATORS
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The present invention provides a genus of polycyclic pyrimidines that are useful as modulators of potassium ion channels. The modulators of the invention are of use in both therapeutic and diagnostic methods.
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Page/Page column 38
(2008/06/13)
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- POLYCYCLIC PYRIDINES AS POTASSIUM ION CHANNEL MODULATORS
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The present invention provides a genus of polycyclic pyridines that are useful as modulators of potassium ion channels. The modulators of the invention are of use in both therapeutic and diagnostic methods.
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Page/Page column 45-46
(2010/02/14)
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- Polycyclic pyrazines as potassium ion channel modulators
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The present invention provides a genus of polycyclic pyrazines that are useful as modulators of potassium ion channels. The modulators of the invention are of use in both therapeutic and diagnostic methods.
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Page/Page column 10; 17
(2010/02/14)
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