37649-86-8Relevant academic research and scientific papers
Practical Preparation of a 1,3,5-Trisubstituted Pyridazin-4(1 H)-one Using Selective C1 Unit Insertion and Cyclization
Suzuki, Akihiro,Fukuda, Naohiro,Kajiwara, Takeshi,Ikemoto, Tomomi
, p. 484 - 492 (2019/02/14)
A novel and practical preparation of the selective phosphodiesterase 10A (PDE10A) inhibitor 1 having the core moiety of a 1,3,5-trisubstituted pyridazin-4(1H)-one has been achieved. The facile preparation of 1 in 42% overall yield involves the following key features: (1) the finding that filling the headspace of the reaction vessel with Ar gas and controlling the flow rate of the gas were found to be important to complete the substitution of an aryl iodide with pyrazole; (2) synthesis of a 3-acetyl-5-methoxy-substituted pyridazin-4(1H)-one via regioselective dimethylaminomethylenation of a diazo compound and simultaneous cyclization; and (3) regioselective ring formation of a 1,5-disubstituted pyrazole through reaction of a dimethylaminomethylene group with phenylhydrazine. In addition, an alternative synthesis of 1 via selective alkylation of 1-phenylpyrazole has been discovered.
Imidazopyridazines as potent inhibitors of Plasmodium falciparum calcium-dependent protein kinase 1 (PfCDPK1): Preparation and evaluation of pyrazole linked analogues
Large, Jonathan M.,Osborne, Simon A.,Smiljanic-Hurley, Ela,Ansell, Keith H.,Jones, Hayley M.,Taylor, Debra L.,Clough, Barbara,Green, Judith L.,Holder, Anthony A.
, p. 6019 - 6024 (2013/10/22)
The structural diversity and SAR in a series of imidazopyridazine inhibitors of Plasmodium falciparum calcium dependent protein kinase 1 (PfCDPK1) has been explored and extended. The opportunity to further improve key ADME parameters by means of lowering log D was identified, and this was achieved by replacement of a six-membered (hetero)aromatic linker with a pyrazole. A short SAR study has delivered key examples with useful in vitro activity and ADME profiles, good selectivity against a human kinase panel and improved levels of lipophilic ligand efficiency. These new analogues thus provide a credible additional route to further development of the series.
Synthesis, docking studies, pharmacological activity and toxicity of a novel pyrazole derivative (LQFM 021) - Possible effects on phosphodiesterase
Martins, Daniella Ramos,Pazini, Francine,Alves, Vinicius De Medeiros,De Moura, Soraya Santana,Liao, Luciano Morais,De Magalhaes, Mariana Torquato Quezado,Valadares, Marize Campos,Andrade, Carolina Horta,Menegatti, Ricardo,Rocha, Matheus Lavorenti
, p. 524 - 531 (2013/07/19)
This study describes the synthetic route and molecular computational docking of LQFM 021, as well as examines its biological effects and toxicity. The docking studies revealed strong interaction of LQFM 021 to phosphodiesterase-3 (PDE-3). In isolated arte
Complete assignment of NMR data of 22 phenyl-1H-pyrazoles' derivatives
De Oliveira, Aline Lima,Alves De Oliveira, Carlos Henrique,Mairink, Laura Maia,Pazini, Francine,Menegatti, Ricardo,Liao, Luciano Morais
scheme or table, p. 537 - 542 (2011/10/09)
Complete assignment of 1H and 13C NMR chemical shifts and J(1H/1H and 1H/19F) coupling constants for 22 1-phenyl-1H-pyrazoles' derivates were performed using the concerted application of 1H 1D and 1H, 13C 2D gs-HSQC and gs-HMBC experiments. All 1-phenyl-1H-pyrazoles' derivatives were synthesized as described by Finar and co-workers. The formylated 1-phenyl-1H-pyrazoles' derivatives were performed under Duff's conditions. Copyright
