- PROTEIN KINASE INHIBITORS FOR PROMOTING LIVER REGENERATION OR REDUCING OR PREVENTING HEPATOCYTE DEATH
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The invention relates to compounds of formula (I) which are inhibitors of MKK4 (mitogen-activated protein kinase kinase 4) and their use in promoting liver regeneration or reducing or preventing hepatocyte death. The compounds selectively inhibit protein kinase MKK4 over protein kinases JNK and MKK7. (I), wherein R x, R y , R z and R zz are selected from: a) R x and R y are F and R z and R zz are H; b) R x, R y and R zz are independently halogen and R z is H; c) R x R z and R zz are independently halogen and R y is H; and d) R x R y and R z are independently halogen and R zz is H
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Page/Page column 46; 47
(2020/02/14)
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- Synthesis and biological evaluation of selected 7-azaindole derivatives as CDK9/Cyclin T and Haspin inhibitors
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The 7-azaindole scaffold attracts attention due to its value in the design of inhibitors of diseases related protein kinases. However, this scaffold has not been evaluated against Haploid germ cell-specific nuclear protein kinase (Haspin). Herein, we report the synthesis of a select set of 7-azaindole derivatives and their evaluation against Haspin. The compounds were also evaluated against CDK9/Cyclin T kinase. The synthesis of 7-azaindole derivatives was achieved through Suzuki coupling using appropriate halogenated 7-azaindole and boronic acids. Seven of the screened compounds exhibited activity as CDK9/Cyclin T and/or Haspin inhibitors in a nanomolar to low micromolar range. The most promising dual inhibiting compound 18c, exhibited an inhibitory potential of 0.206 μM against CDK9/Cyclin T and 0.118 μM against Haspin. The dual inhibition of CDK9/Cyclin T and Haspin could afford a potentially potent antimitotic agent of value in further anticancer studies.
- Pieterse, Lianie,Legoabe, Lesetja J.,Beteck, Richard M.,Josselin, Béatrice,Bach, Stéphane,Ruchaud, Sandrine
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p. 1449 - 1462
(2020/06/01)
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- Synthesis of novel 7-azaindole derivatives containing pyridin-3-ylmethyl dithiocarbamate moiety as potent PKM2 activators and PKM2 nucleus translocation inhibitors
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Multiple lines of evidence have indicated that pyruvate kinase M2 (PKM2) is upregulated in most cancer cells and it is increasingly recognized as a potential therapeutic target in oncology. In a continuation of our discovery of lead compound 5 and SAR study, the 7-azaindole moiety in compound 5 was systematically optimized. The results showed that compound 6f, which has a difluoroethyl substitution on the 7-azaindole ring, exhibited high PKM2 activation potency and anti-proliferation activities on A375 cell lines. In a xenograft mouse model, oral administration of compound 6f led to significant tumor regression without obvious toxicity. Further mechanistic studies revealed that 6f could influence the translocation of PKM2 into nucleus, as well as induction of apoptosis and autophagy of A375 cells. More importantly, compound 6f significantly inhibited migration of A375 cells in a concentration-dependent manner. Collectively, 6f may serve as a lead compound in the development of potent PKM2 activators for cancer therapy.
- Liu, Bin,Yuan, Xia,Xu, Bo,Zhang, Han,Li, Ridong,Wang, Xin,Ge, Zemei,Li, Runtao
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- NEW PROCESSES FOR THE PREPARATION OF VEMURAFENIB
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The present invention relates to novel processes for the manufacture of N-(3-(5-(4-chlorophenyl)-1H-pyrrolo[2,3-b]pyridine-3-carbonyl)-2,4-difluorophenyl)propane-1-sulfonamide (I), wherein no protection-deprotection sequences or halogenation steps are required and the use of palladium catalysts is minimized. Formula (I)
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Page/Page column 23
(2018/02/03)
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- PROTEIN KINASE INHIBITORS FOR PROMOTING LIVER REGENERATION OR REDUCING OR PREVENTING HEPATOCYTE DEATH
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The invention relates to MKK4 (mitogen-activated protein kinase 4) and their use in promoting liver regeneration or reducing or preventing hepatocyte death. The MKK4 inhibitors selectively inhibit protein kinase MKK4 over protein kinases JNK and MKK7.
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Page/Page column 35; 36; 79; 80
(2018/08/12)
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- Design of Novel 3-Pyrimidinylazaindole CDK2/9 Inhibitors with Potent in Vitro and in Vivo Antitumor Efficacy in a Triple-Negative Breast Cancer Model
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In the present study, a novel series of 3-pyrimidinylazaindoles were designed and synthesized using a bioinformatics strategy as cyclin-dependent kinases CDK2 and CDK9 inhibitors, which play critical roles in the cell cycle control and regulation of cell transcription. The present approach gives new dimensions to the existing SAR and opens a new opportunity for the lead optimizations from comparatively inexpensive starting materials. The study led to the identification of the alternative lead candidate 4ab with a nanomolar potency against CDK2 and CDK9 and potent antiproliferative activities against a panel of tested tumor cell lines along with a better safety ratio of ~33 in comparison to reported leads. In addition, the identified lead 4ab demonstrated a good solubility and an acceptable in vivo PK profile. The identified lead 4ab showed an in vivo efficacy in mouse triple-negative breast cancer (TNBC) syngeneic models with a TGI (tumor growth inhibition) of 90% without any mortality growth inhibition in comparison to reported leads.
- Singh, Umed,Chashoo, Gousia,Khan, Sameer U.,Mahajan, Priya,Nargotra, Amit,Mahajan, Girish,Singh, Amarinder,Sharma, Anjna,Mintoo, Mubashir J.,Guru, Santosh Kumar,Aruri, Hariprasad,Thatikonda, Thanusha,Sahu, Promod,Chibber, Pankaj,Kumar, Vikas,Mir, Sameer A.,Bharate, Sonali S.,Madishetti, Sreedhar,Nandi, Utpal,Singh, Gurdarshan,Mondhe, Dilip Manikrao,Bhushan, Shashi,Malik, Fayaz,Mignani, Serge,Vishwakarma, Ram A.,Singh, Parvinder Pal
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p. 9470 - 9489
(2017/12/26)
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- A novel protocol for the one-pot borylation/Suzuki reaction provides easy access to hinge-binding groups for kinase inhibitors
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The one-pot borylation/Suzuki reaction is a very efficient means of accessing cross-coupling products of two aryl-halide partners that generally requires the use of specific catalysts or ligands and/or relatively long reaction times. This new microwave-assisted method provides a quick one-pot borylation/Suzuki reaction protocol that we applied to the synthesis of various bi- or poly-aryl scaffolds, including a variety of aryl and heteroaryl ring systems and the core frameworks of kinase inhibitors vemurafenib and GDC-0879.
- Hooper,Zambon,Springer
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p. 963 - 969
(2016/01/15)
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- NOVEL PROCESSES FOR THE PREPARATION OF VEMURAFENIB
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The present invention provides novel intermediates of vemurafenib or a pharmaceutically acceptable salt thereof and processes for its preparation. The present invention also provides novel processes for preparation of vemurafenib or a pharmaceutically acceptable salt thereof using the novel intermediates.
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Page/Page column 43; 44
(2015/06/08)
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- Extending the versatility of the Hemetsberger-Knittel indole synthesis through microwave and flow chemistry
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Microwave, flow and combination methodologies have been applied to the synthesis of a number of substituted indoles. Based on the Hemetsberger-Knittel (HK) process, modifications allow formation of products rapidly and in high yield. Adapting the methodology allows formation of 2-unsubstituted indoles and derivatives, and a route to analogs of the antitumor agent PLX-4032 is demonstrated. The utility of the HK substrates is further demonstrated through bioconjugation and subsequent ring closure and via Huisgen type [3+2] cycloaddition chemistry, allowing formation of peptide adducts which can be subsequently labeled with fluorine tags.
- Ranasinghe, Nadeesha,Jones, Graham B.
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p. 1740 - 1742
(2013/04/10)
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- Novel Processes for the manufacture of Propane-1-sulfonic acid -amide
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According to the present invention there are provided novel processes for the manufacture of the compound of formula 1 as well as intermediates and novel synthesis routes for key intermediates used in those processes.
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- Rapid, microwave-assisted organic synthesis of selective V600EBRAF inhibitors for preclinical cancer research
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We report dramatically improved total syntheses of two highly selective V600EBRAF inhibitors, PLX4720 and PLX4032, that leverages microwave-assisted organic synthesis (MAOS). Compared with previously reported approaches, our novel MAOS method significantly reduces overall reaction time without compromising yield. In addition to providing a gram-scale route to these compounds for preclinical oncology research, we anticipate this approach could accelerate the synthesis of azaindoles in high-throughput, library-based formats.
- Buck, Jason R.,Saleh, Sam,Imam Uddin, Md.,Manning, H. Charles
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supporting information; experimental part
p. 4161 - 4165
(2012/08/29)
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- NOVEL PROCESSES FOR THE MANUFACTURE OF PROPANE-1-SULFONIC ACID {3-[5-(4-CHLORO-PHENYL)-1H-PYRROLO[2,3-B]PYRIDINE-3-CARBONYL]-2,4-DIFLUORO-PHENYL}-AMIDE
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According to the present invention there are provided novel processes for the manufacture of the compound of formula (1) as well as novel synthesis routes for key intermediates used in those processes.
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- COMPOUNDS AND METHODS FOR KINASE MODULATION, AND INDICATIONS THEREFOR
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Compounds active on protein kinases are described, as well as methods of using such compounds to treat diseases and conditions associated with aberrant activity of protein kinases.
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Page/Page column 38
(2008/12/06)
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- PYRROLO[2,3-B] PYRIDINE DERIVATIVES AS PROTEIN KINASE INHIBITORS
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Compounds of formula III which are active on protein kinases are described, as well as methods of using such compounds to treat diseases and conditions associated with aberrant activity of protein kinases.
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Page/Page column 124
(2010/11/25)
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