70404-23-8Relevant academic research and scientific papers
Design, synthesis and in silico insights of new 7,8-disubstituted-1,3-dimethyl-1H-purine-2,6(3H,7H)-dione derivatives with potent anticancer and multi-kinase inhibitory activities
Abdel Gawad, Nagwa M.,El Kerdawy, Ahmed M.,George, Riham F.,Georgey, Hanan H.,Mohamed, Abdalla R.
, (2021/01/04)
Aiming to obtain an efficient anti-proliferative activity, structure- and ligand-based drug design approaches were expanded and utilized to design and refine a small compound library. Subsequently, thirty-two 7,8-disubstituted-1,3-dimethyl-1H-purine-2,6(3H,7H)-dione derivatives were selected for synthesis based on the characteristic pharmacophoric features required for PI3K and B-Raf oncogenes inhibition. All the synthesized compounds were evaluated for their in vitro anticancer activity. Compounds 17 and 22c displayed an acceptable potent activity according to the DTP-NCI and were further evaluated in the NCI five doses assay. To validate our design, compounds with the highest mean growth inhibition percent were screened against the target PI3Kα and B-RafV600E to confirm their multi-kinase activity. The tested compounds showed promising multi-kinase activity. Compounds 17 and 22c anticancer effectiveness and multi-kinase activity against PI3Kα and B-RafV600E were consolidated by the inhibition of B-RafWT, EGFR and VEGFR-2 with IC50 in the sub-micromolar range. Further investigations on the most potent compounds 17 and 22c were carried out by studying their safety on normal cell line, in silico profiling and predicted ADME characteristics.
New 8-aminoalkyl derivatives of purine-2,6-dione with arylalkyl, allyl or propynyl substituents in position 7, their 5-HT1A, 5-HT2A, and 5-HT7 receptor affinity and pharmacological evaluation
Ch?oń-Rzepa, Grazyna,Zmudzki, Pawe?,Sata?a, Grzegorz,Duszyńska, Beata,Partyka, Anna,Wróbel, Dagmara,Jastrz?bska-Wi?sek, Magdalena,Weso?owska, Anna,Bojarski, Andrzej J.,Paw?owski, Maciej,Zajdel, Pawe?
, p. 15 - 29 (2013/06/27)
Background: Our previous studies in a group of arylpiperazine derivatives of 1,3-dimethyl-3,7-dihydro-purine-2,6-diones, aimed at chemical diversification of the purine-2,6-dione by introduction of hydrophobic substituent in a 7- or 8- position or elongation of the linker length between arylpiperazine and purine core, allowed a selection of potent 5-HT1A, 5-HT2A and 5-HT7 receptor ligands displaying anxiolytic and antidepressant properties. Continuing our research in this field, in the present studies we designed a new series of 8-aminoalkylamino (15-35) and 8-arylpiperazinylpropoxy (36-42) derivatives of 7-substituted 1,3-dimethyl-3,7-dihydropurine-2,6-dione as potential 5-HT1A, 5-HT2A and 5-HT7 receptor ligands with potential psychotropic activity. Methods: Radioligand binding assays were employed for determining the affinity and the selectivity profile of the synthesized compounds for native 5-HT1A, 5-HT2A, and cloned 5-HT6 and 5-HT7 receptors. The functional activity of the selected compounds at 5-HT1A and 5-HT2A receptors was tested in the commonly used in vivo models. Antidepressant and anxiolytic properties were evaluated in the forced swim (FST) and the four-plate test (FPT) in mice, respectively. Results: Among the evaluated series, selected 7-benzyl-8-((4-(4-(3-chlorophenyl)piperazin-1-yl)butyl)amino)-1, 3-dimethyl-1H-purine-2,6(3H,7H)-dione (21), a mixed 5-HT1A/5-HT 2A/5-HT7 receptor ligand, produced an antidepressant-like effect in FST, and exerted anxiolytic-like activity in FPT. Another pharmacologically evaluated compound 42 (a mixed 5-HT1A/5-HT 7 ligand) slightly, but non-significantly attenuated the immobility time of mice in FST and was devoid of activity in FPT. Conclusions: Study revealed advantage of mixed 5-HT1A/5-HT2A/5-HT7 receptor ligands over 5-HT1A/5-HT7 agents to display antidepressant-and anxiolytic-like activity. Modification of arylalkyl/allyl substituent in position 7 of purine-2,6-dione opens possibility for designing new 5-HT ligands with preserved p electron system and lower molecular weight. Copyright
Synthesis of 8-substituted xanthine derivatives by Suzuki cross-coupling reaction
Vollmann, Karl,Mueller, Christa E.
, p. 871 - 879 (2007/10/03)
A Suzuki cross-coupling reaction procedure was developed to prepare 8-substituted 3,7-dihydropurine-2,6-dione (xanthine) derivatives. 8-Halogen-substituted xanthines were reacted with phenyl- and styrylboronic acids. The best results were obtained using tetrakis(triphenylphosphine)palladium(0) and tripotassium phosphate in dimethylformamide. The developed procedure allows for a convergent synthesis of pharmacologically active 8-substituted xanthine derivatives.
Design and synthesis of xanthine analogues as potent and selective PDE5 inhibitors
Wang, Yuguang,Chackalamannil, Samuel,Hu, Zhiyong,Boyle, Craig D.,Lankin, Claire M.,Xia, Yan,Xu, Ruo,Asberom, Theodros,Pissarnitski, Dmitri,Stamford, Andrew W.,Greenlee, William J.,Skell, Jeffrey,Kurowski, Stanley,Vemulapalli, Subbarao,Palamanda, Jairam,Chintala, Madhu,Wu, Ping,Myers, Joyce,Wang, Peng
, p. 3149 - 3152 (2007/10/03)
We have discovered potent and selective xanthine PDE5 inhibitors. Compound 25 (PDE5 IC50=0.6 nM, PDE6/PDE5=101) demonstrated similar functional efficacy and PK profile to Sildenafil (PDE5 IC50=3.5 nM, PDE6/PDE5=7).
