1312941-98-2Relevant academic research and scientific papers
From off-to on-target: New BRAF-inhibitor-template-derived compounds selectively targeting mitogen activated protein kinase kinase 4 (MKK4)
Kl?vekorn, Philip,Pfaffenrot, Bent,Juchum, Michael,Selig, Roland,Albrecht, Wolfgang,Zender, Lars,Laufer, Stefan A.
, (2020/11/20)
The mitogen-activated protein kinase (MAP) kinase 4 (MKK4) was found to be a major regulator of liver regeneration and could be a valuable drug target addressing liver related diseases by restoring its intrinsic regenerative capacity. We report on the synthesis and optimization of novel MKK4 inhibitors following a target-hopping strategy from the FDA-approved BRAFV600E inhibitor PLX4032 (8). Applying an iterative multi-parameter optimization process we carved out essential structural features yielding in compounds with a low nanomolar affinity for MKK4 and excellent selectivity profiles against the main off-targets MKK7 and JNK1, which, upon relevant inhibition, would totally abrogate the pro-regenerative effect of MKK4 inhibition, as well as against the off-targets MAP4K5, ZAK and BRAF with selectivity factors ranging from 40 to 430 for our best-balanced compounds 70 and 73.
Selective CRAF Inhibition Elicits Transactivation
Morgan, Charles W.,Dale, Ian L.,Thomas, Andrew P.,Hunt, James,Chin, Jason W.
, p. 4600 - 4606 (2021/05/04)
Discovering molecules that regulate closely related protein isoforms is challenging, and in many cases the consequences of isoform-specific pharmacological regulation remains unknown. RAF isoforms are commonly mutated oncogenes that serve as effector kinases in MAP kinase signaling. BRAF/CRAF heterodimers are believed to be the primary RAF signaling species, and many RAF inhibitors lead to a "paradoxical activation"of RAF kinase activity through transactivation of the CRAF protomer; this leads to resistance mechanisms and secondary tumors. It has been hypothesized that CRAF-selective inhibition might bypass paradoxical activation, but no CRAF-selective inhibitor has been reported and the consequences of pharmacologically inhibiting CRAF have remained unknown. Here, we use bio-orthogonal ligand tethering (BOLT) to selectively target inhibitors to CRAF. Our results suggest that selective CRAF inhibition promotes paradoxical activation and exemplify how BOLT may be used to triage potential targets for drug discovery before any target-selective small molecules are known.
Design and synthesis of novel pyrrolo[2,3-b]pyridine derivatives targeting V600EBRAF
Abdel-Maksoud, Mohammed S.,Ali, Eslam M. H.,Ammar, Usama M.,Mersal, Karim I.,Oh, Chang-Hyun,Yoo, Kyung Ho
, (2020/04/28)
Several pyrrolo[2,3-b]pyridine-based B-RAF inhibitors are well known and some of them are currently FDA approved as anticancer agents. Based on the structure of these FDA approved V600EB-RAF inhibitors, two series of pyrrolo[2,3-b]pyridine scaffold were designed and synthesized in attempt to develop new potent V600EB-RAF inhibitors. The 38 synthesized compounds were biologically evaluated for their V600EB-RAF inhibitory effect at single dose (10 μM). Compounds with high percent inhibition were tested to determine their IC50 over V600EB-RAF. Compounds 34e and 35 showed the highest inhibitory effect with IC50 values of 0.085 μM and 0.080 μM, respectively. Headed for excessive biological evaluation, the synthesized derivatives were tested over sixty diverse human cancer cell lines. Only compound 35 emerged as a potent cytotoxic agent against different panel of human cancer cell lines.
POLYCYCLIC COMPOUNDS AND METHODS FOR THE TARGETED DEGRADATION OF RAPIDLY ACCELERATED FIBROSARCOMA POLYPEPTIDES
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, (2020/03/29)
The present disclosure relates to bifunctional compounds, ULM— L—PTM, which find utility as modulators of Rapidly Accelerated Fibrosarcoma (RAF, such as c-RAF, A- RAF and/or B-RAF; the target protein). In particular, the present disclosure is directed to bifunctional compounds, which contain on one end a Von Hippel-Lindau, cereblon, Inhibitors of Apotosis Proteins or mouse double-minute homolog 2 ligand which binds to the respective E3 ubiquitin ligase and on the other end a moiety which binds the target protein RAF, such that the target protein is placed in proximity to the ubiquitin ligase to effect degradation (and inhibition) of target protein. The present disclosure exhibits a broad range of pharmacological activities associated with degradation/inhibition of target protein. Diseases or disorders that result from aggregation or accumulation of the target protein, or the constitutive activation of the target protein, are treated or prevented with compounds and compositions of the present disclosure.
FORMULATIONS OF A COMPOUND MODULATING KINASES
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Paragraph 0162, (2019/05/15)
Provided are solid dispersions of Compound I having the formula: wherein Compound I is substantially amorphous, methods of manufacturing said solid dispersions, and methods of using said solid dispersions.
COMPOUNDS AND METHODS FOR THE TARGETED DEGRADATION OF RAPIDLY ACCELERATED FIBROSARCOMA POLYPEPTIDES
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, (2018/07/15)
The present disclosure relates to bifunctional compounds, which find utility as modulators of Rapidly Accelerated Fibrosarcoma (RAF, such as c-RAF, A-RAF and/or B-RAF; the target protein). In particular, the present disclosure is directed to bifunctional compounds, which contain on one end a Von Hippel-Lindau, cereblon, Inhibitors of Apotosis Proteins or mouse double-minute homolog 2 ligand which binds to the respective E3 ubiquitin ligase and on the other end a moiety which binds the target protein RAF, such that the target protein is placed in proximity to the ubiquitin ligase to effect degradation (and inhibition) of target protein. The present disclosure exhibits a broad range of pharmacological activities associated with degradation/inhibition of target protein. Diseases or disorders that result from aggregation or accumulation of the target protein, or the constitutive activation of the target protein, are treated or prevented with compounds and compositions of the present disclosure.
PROTEIN KINASE INHIBITORS FOR PROMOTING LIVER REGENERATION OR REDUCING OR PREVENTING HEPATOCYTE DEATH
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Page/Page column 81, (2018/08/12)
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.
COMPOUNDS AND METHODS FOR KINASE MODULATION, AND INDICATIONS THEREFOR
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, (2017/07/04)
Compounds active on protein kinases are described, as well as methods of making and using such compounds to treat diseases and conditions associated with aberrant activity of protein kinases.
NOVEL INHIBITORS OF PROTEIN KINASES
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, (2017/09/08)
Protein kinases are regulators of cellular signaling and their functional dysregulation is common in carcinogenesis and many other disease states or disorders. The present invention relates to novel chemical entities that have biological activity to modulate mammalian protein kinase enzymes. In particular, compounds of the invention display potent inhibition of breast tumor related kinase (BRK).
SOLID FORMS OF A COMPOUND FOR MODULATING KINASES
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Paragraph 0081, (2016/12/16)
Solid forms of Compound I (and its S-enantiomer, Compound II), active on protein kinases, were prepared and characterized: Also provided are methods of using the solid forms.
