5326-80-7Relevant academic research and scientific papers
Regioselective Synthesis of Pyrazolo[3,4-D[Pyrimidine Based Carbocyclic Nucleosides as Possible Antiviral Agent
Kasula, Mohan,Samunuri, Ramakrishnamraju,Chakravarty, Harapriya,Bal, Chandralata,Baba, Masanori,Jha, Ashok Kumar,Sharon, Ashoke
, p. 43 - 52 (2016)
Carbocyclic nucleosides are considered as nucleoside mimetic having high therapeutic potentials, however diverse exploration is still limited due to their synthetic difficulties. The major challenges are associated with the preparation of new base and carbocyclic sugar key intermediates. The modified base may provide conformational advantage to achieve better nucleoside mimetics and may also help in increasing the drug-like properties. In this manuscript, we report the use of acetamidine hydrochloride to synthesize 6-methyl-4-amino-pyrazolo[3,4-d]pyrimidine base and regioselective synthesis of six new carbocyclic nucleosides (6a-f) for antiviral evaluation. Theoretical investigations were carried out on the basis of thermodynamic and kinetic stability using MM based energy optimizations and QM based transition state search for the significant regioselectivity, which was further experimentally analyzed by NOE and UV spectroscopy.
Simple and Clean Photo-induced Methylation of Heteroarenes with MeOH
Liu, Wenbo,Yang, Xiaobo,Zhou, Zhong-Zhen,Li, Chao-Jun
supporting information, p. 688 - 702 (2017/05/15)
Heteroarene methylation utilizing a cheap and safe methylation source without involving transition metals represents an important yet challenging objective. Here, a simple and clean catalyst-free protocol for the methylation of various heteroarenes (including six- and five-membered types) is described under light irradiation. This protocol employs cheap, readily available, and abundant MeOH as both the solvent and the methylation source. It was found that adding dichloromethane (DCM) as a co-solvent could significantly increase the yield of the methylation products. Heteroarenes bearing various functional groups could be methylated and tri-deuteromethylated successfully. Deuterium labeling studies suggested that the newly generated methyl group in the products consisted of two hydrogens from the methyl group and one hydrogen from the OH group in MeOH.
1-PHENYLPYRROLIDIN-2-ONE DERIVATIVES AS PERK INHIBITORS
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Page/Page column 117, (2017/04/11)
The invention is directed to substituted pyrrolidinone and imidazolidinone derivatives. Specifically, the invention is directed to compounds according to Formula I: (I) wherein R1, R2, R3, R4, R5, R6, R7, X and Y are as defined herein. The compounds of the invention are inhibitors of PERK and can be useful in the treatment of cancer, pre-cancerous syndromes and diseases/injuries associated with activated unfolded protein response pathways, such as Alzheimer's disease, neuropathic pain, spinal cord injury, traumatic brain injury, ischemic stroke, stroke, Parkinson's disease, diabetes, metabolic syndrome, metabolic disorders, Huntington's disease, Creutzfeldt- Jakob Disease, fatal familial insomnia, Gerstmann-Str?ussler-Scheinker syndrome, and related prion diseases, amyotrophic lateral sclerosis, progressive supranuclear palsy, myocardial infarction, cardiovascular disease, inflammation, organ fibrosis, chronic and acute diseases of the liver, fatty liver disease, liver steatosis, liver fibrosis, chronic and acute diseases of the lung, lung fibrosis, chronic and acute diseases of the kidney, kidney fibrosis, chronic traumatic encephalopathy (CTE), neurodegeneration, dementias, frontotemporal dementias, tauopathies, Pick's disease, Neimann-Pick's disease, amyloidosis, cognitive impairment, atherosclerosis, ocular diseases, arrhythmias, in organ transplantation and in the transportation of organs for transplantation. Accordingly, the invention is further directed to pharmaceutical compositions comprising a compound of the invention. The invention is still further directed to methods of inhibiting PERK activity and treatment of disorders associated therewith using a compound of the invention or a pharmaceutical composition comprising a compound of the invention.
PYRAZOLO [3, 4-D] PYRIMIDINE DERIVATIVES FOR THE TREATMENT OF INFLAMMATION AND/OR ALLERGIC CONDITIONS
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Page/Page column 40-41, (2009/01/20)
The present invention provides compounds of formula (I): a process for their preparation, pharmaceutical compositions comprising the compounds and the use of the compounds for the manufacture of a medicament for therapeutic treatment, particularly for the treatment of inflammation and/or allergic conditions.
PYRAZOLO-PYRIMIDINE DERIVATIVES AS ANTI-INFLAMMATORY AGENTS
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Page/Page column 31, (2008/06/13)
The present invention is directed to compounds of formula (I): a process for their preparation, to pharmaceutical compositions comprising the compounds and the preparation of said compositions, to intermediates and to use of the compounds for the manufacture of a medicament for therapeutic treatment, particularly for the treatment of inflammation and/or allergic conditions.
