99072-22-7

Upstream product

• 4101-30-8 2-amino-4,5-dimethoxyacetophenone 

Downstream Products

• 879014-17-2 4-bromo-6,7-dimethoxy cinnoline 
• 158631-54-0 C₁₂H₁₂N₂O₅ 

Relevant academic research and scientific papers

Synthesis and in vitro characterization of cinnoline and benzimidazole analogues as phosphodiesterase 10A inhibitors

Fifteen cinnoline analogues and six benzimidazole phosphodiesterase 10A (PDE10A) inhibitors were synthesized as potential PET radiopharmaceuticals and their in vitro activity as PDE10A inhibitors was determined. Nine out of twenty-one compounds were potent inhibitors of PDE10A with IC50 values ranging from 1.5 to 18.6 nM. Notably, the IC50 values of compounds 26a, 26b, and 33c were 1.52 ± 0.18, 2.86 ± 0.10, and 3.73 ± 0.60 nM, respectively; these three compounds also showed high in vitro selectivity (>1000-fold) for PDE10A over PDE 3A/3B, PDE4A/4B. The high potency and selectivity of these three compounds suggests that they could be radiolabeled with PET radionuclides for further evaluation of their in vivo pharmacological behavior and ability to quantify PDE10A in the brain.

Aurora Kinase Modulators and Method of Use

The present invention relates to chemical compounds having a general formula I wherein A1-8, D′, L1, L2, R1, R6-8 and n are defined herein, and synthetic intermediates, which are capable of modulating various protein kinase receptor enzymes and, thereby, influencing various disease states and conditions related to the activities of such kinases. For example, the compounds are capable of modulating Aurora kinase thereby influencing the process of cell cycle and cell proliferation to treat cancer and cancer-related diseases. The invention also includes pharmaceutical compositions, including the compounds, and methods of treating disease states related to the activity of Aurora kinase.

Synthesis and evaluation of vascular endothelial growth factor receptor-2 inhibitory activity of 6,7-dimethoxycinnoline derivatives

A series of 6, 7-Dimethoxycinnoline derivatives was prepared as vascular endothelial growth factor recepto 2 (VEGFR-2) inhibitors and their activity to inhibit VEGFR-2 and epidermal growth factor receptor (EGFR) were evaluated. The structure-activity studies on compounds screening led to the discovery of a novel series of potent and selective VEGFR-2 inhibitors. Compound 6-(6,7-dimethoxycinnolin-4-yloxy)-N-(4-chlorophenyl)naphthalene-1-carboxamide 7a showed potent VEGFR-2 inhibitory activity and good selectivity against EGFR. 2013 Bentham Science Publishers.

Discovery of potent, selective, and metabolically stable 4-(pyridin-3-yl)cinnolines as novel phosphodiesterase 10A (PDE10A) inhibitors

We report the discovery of 6,7-dimethoxy-4-(pyridin-3-yl)cinnolines as novel inhibitors of phosphodiesterase 10A (PDE10A). Systematic examination and analyses of structure-activity-relationships resulted in single digit nM potency against PDE10A. X-ray co-crystal structure revealed the mode of binding in the enzyme's catalytic domain and the source of selectivity against other PDEs. High in vivo clearance in rats was addressed with the help of metabolite identification (ID) studies. These findings combined resulted in compound 39, a promising potent inhibitor of PDE10A with good in vivo metabolic stability in rats and efficacy in a rodent behavioral model.

Rapid identification of a novel small molecule phosphodiesterase 10A (PDE10A) tracer

A radiolabeled tracer for imaging therapeutic targets in the brain is a valuable tool for lead optimization in CNS drug discovery and for dose selection in clinical development. We report the rapid identification of a novel phosphodiesterase 10A (PDE10A) tracer candidate using a LC-MS/MS technology. This structurally distinct PDE10A tracer, AMG-7980 (5), has been shown to have good uptake in the striatum (1.2% ID/g tissue), high specificity (striatum/thalamus ratio of 10), and saturable binding in vivo. The PDE10A affinity (KD) and PDE10A target density (Bmax) were determined to be 0.94 nM and 2.3 pmol/mg protein, respectively, using [ 3H]5 on rat striatum homogenate. Autoradiography on rat brain sections indicated that the tracer signal was consistent with known PDE10A expression pattern. The specific binding of [3H]5 to rat brain was blocked by another structurally distinct, published PDE10A inhibitor, MP-10. Lastly, our tracer was used to measure in vivo PDE10A target occupancy of a PDE10A inhibitor in rats using LC-MS/MS technology.

AURORA KINASE MODULATORS AND METHOD OF USE

The present invention relates to chemical compounds having a general formula I {INSERT STRUCTURE HERE} wherein A1-8, D,, L1, L2, R1, R6-8 and n are defined herein, and synthetic intermediates, which are capable of modulating various protein kinase receptor enzymes and, thereby, influencing various disease states and conditions related to the activities of such kinases. For example, the compounds are capable of modulating Aurora kinase thereby influencing the process of cell cycle and cell proliferation to treat cancer and cancer-related diseases. The invention also includes pharmaceutical compositions, including the compounds, and methods of treating disease states related to the activity of Aurora kinase.

CINNOLINE DERIVATIVES AS PHOSPHODIESTERASE 10 INHIBITORS

The present invention is directed to certain cinnoline compounds of formula (I) that are PDE10 inhibitors, pharmaceutical compositions containing such compounds and process for preparing such compounds. The invention is also directed to methods of treating diseases treatable by modulation of PDE10 enzyme, such as obesity, non-insulin dependent diabetes, schizophrenia, bipolar disorder, obsessive-compulsive disorder, and the like.

4-SUBSTITUTED 4, 6-DIALKOXY-CINNOLINE DERIVATIVES AS PHOSPODIESTERASE 10 INHIBITORS FOR THE TREATMENT OF PSYCHIATRIC OR NEUROLOGICAL SYNDROMS

The present disclosure relates generally to the field of phosphodiesterase 10 (PDE10) enzyme inhibition by cinnoline compounds of Formulas: (I) and (II); wherein R'-R3 and R15-R18 are as defined herein. Still further, the present invention provides methods for synthesizing compounds with such activity and selectivity, as well as methods of and corresponding pharmaceutical compositions for treating a patient, e.g., mammals, including humans, in need of PDE inhibition. Treatment is preferably for a disease state that involves elevated intracellular PDE10 levels or decreased cAMP and/or cGMP levels, e.g., involving neurological or psychiatric syndromes, especially those states associated with psychoses, most especially schizophrenia or bipolar disorder, obsessive-compulsive disorder, and/or Parkinson’s disease. In particular, such psychoses, obsessive-compulsive disorder, and/or Parkinson’s disease are due at least in part to catabolism of intracellular cAMP and/or cGMP levels by PDE10 enzymes or where such an impaired condition can be improved by increasing cAMP and/or cGMP levels.