Recent Developments in the Synthesis of Bicyclic Condensed Pyrimidinones

2022 ◽  
Vol 26 ◽  
Author(s):  
Rayees Ahmad Naikoo ◽  
Rupesh Kumar ◽  
Vipan Kumar ◽  
Gaurav Bhargava

Abstract: Functionalized bicyclic pyrimidinones and their derivatives are significant heterocyclic scaffolds being their all-around prevalence in biologically potent compounds. In several attempts to explore the different synthetic methodologies for the construction of bicyclic condensed pyrimidinones, different researchers from all across the globe have reported numerous substantial methods. In the present review, considerable work has been critically compiled on the synthesis of substituted and functionalized bicyclic pyrimidinones from 2000 onwards.

English Today ◽  
2005 ◽  
Vol 21 (4) ◽  
pp. 3-12 ◽  
Author(s):  
abdullah hassan

recent developments in malaysia have brought forth many issues vis-à-vis language planning, notably including the return to english as a medium of instruction. the present review addresses current linguistic issues and their implications for malay as the national official language, bringing together linguistics, sociology, education, psychology, communication, geography, history, politics, finance and management, in a nation which is not only multilingual but also multiethnic, multi-religious and multicultural. to make the matter more complex still, the immigrant population is almost as large as the so-called indigenous ‘majority’.


2019 ◽  
Vol 21 (3) ◽  
pp. 113-123
Author(s):  
Adrianna Ratajska ◽  
Jonathan Zurawski ◽  
Brian Healy ◽  
Bonnie I. Glanz

Abstract Depression is common in multiple sclerosis (MS), affecting up to 50% of patients at some point in their lifetime. Although the rate of depression in MS is higher than that in the general population and that in patients with other chronic medical conditions, depression in MS is underdiagnosed and undertreated. Antidepressant agents are used empirically in the management of MS-related depression, but evidence specifically demonstrating the efficacy of these medications in patients with MS is sparse. Considerable work suggests that psychological interventions such as cognitive behavioral therapy (CBT) may be effective in the management of depression in MS. Recently there has been an expansion of computerized adaptations of CBT, allowing patients to complete therapy sessions remotely via online programs. This article reviews our current understanding of depression in MS and the role of CBT in its management, focusing on recent developments in computerized formats for CBT. Four computerized CBT programs that have been previously tested in patients with MS are described: Deprexis, MoodGYM, Beating the Blues, and MS Invigor8. We conclude that despite challenges inherent to computerized CBT interventions, such platforms have the potential to positively affect mental health care delivery to the MS patient population.


2020 ◽  
Vol 7 (2) ◽  
pp. 411-454 ◽  
Author(s):  
Rakesh Kumar Sharma ◽  
Priya Yadav ◽  
Manavi Yadav ◽  
Radhika Gupta ◽  
Pooja Rana ◽  
...  

The review focuses on recent developments in the synthetic methodologies of COFs and their applications in the field of organocatalysis, electrocatalysis and photocatalysis. Future scope of COFs in the field are also described.


2020 ◽  
Vol 18 (48) ◽  
pp. 9737-9761
Author(s):  
Jay Prakash Soni ◽  
Krishna Sowjanya Chemitikanti ◽  
Swanand Vinayak Joshi ◽  
Nagula Shankaraiah

The present review emphasizes the scope of and recent developments in the microwave-assisted synthesis of various non-(benzo)fused single-nitrogen-containing heterocycles and related applications in the past decade.


2020 ◽  
Vol 49 (24) ◽  
pp. 9121-9153
Author(s):  
Ricardo F. Mendes ◽  
Flávio Figueira ◽  
José P. Leite ◽  
Luís Gales ◽  
Filipe A. Almeida Paz

The present review focuses on the use of Metal–Organic Frameworks, (MOFs) highlighting the most recent developments in the biological field and as bio-sensors.


Author(s):  
Gábor Galbács ◽  
Albert Kéri ◽  
Attila Kohut ◽  
Miklós Veres ◽  
Zsolt Geretovszky

The present review attempts to comprehensively overview the progress in the field of nanoparticle-related analytical laser and plasma spectroscopy research, focusing on the results of the past decade. The discussion...


2018 ◽  
Vol 6 (19) ◽  
pp. 2945-2959 ◽  
Author(s):  
Zahra Sadrearhami ◽  
Thuy-Khanh Nguyen ◽  
Rashin Namivandi-Zangeneh ◽  
Kenward Jung ◽  
Edgar H. H. Wong ◽  
...  

The present review highlights the recent developments in NO-releasing polymeric biomaterials for antimicrobial applications.


2019 ◽  
Vol 18 (30) ◽  
pp. 2599-2613 ◽  
Author(s):  
Rajesh Kotcherlakota ◽  
Syed Tazib Rahaman ◽  
Chitta Ranjan Patra

Autophagy is an intracellular biological catabolic process of mammalian cells to maintain the homeostasis. It plays a wide role in the clearance of damaged cellular organelles, misfolded or aggregated proteins like alpha-synuclein, β-amyloid peptides, Tau proteins and pathogens. Recent studies have clearly demonstrated that dysfunction in autophagy leads to the development of cancer, cardiomyopathy, chronic infection, neurodegenerative and other diseases. Therefore, modulation of autophagy has therapeutic value to cure the diseases including cancer using external stimuli. In this context, various researchers developed small molecules such as chloroquine, rapamycin, etc. for the treatment of cancer through autophagy. However, these molecules possess side effects which limit their use in the clinics. Therefore, nanomedicine approach could stand as an alternative treatment option to induce the autophagy in cancer therapy. Several investigators developed a variety of nanomaterials which themselves act as autophagy inducers or inhibitors. Considering this, the present review article will focus on the recent developments of nanomedicine in the area of autophagy that have been focused on the treatment of cancers. We also summarised the detailed mechanisms of nanoparticles mediated autophagy which could be helpful for developing new strategies to fight against cancer. Also, the present review article covers the current clinical status of nanomedicine and future challenges. Finally, we conclude with the future potential role of nanomedicine for autophagy induction in the cancer treatment.


RSC Advances ◽  
2016 ◽  
Vol 6 (76) ◽  
pp. 71827-71851 ◽  
Author(s):  
Khaled M. Elattar ◽  
Başak Doğru Mert

The present review reports the chemistry and biological importance of pyrido[4,3-d]pyrimidine analogues.


2009 ◽  
Vol 21 (8) ◽  
pp. 992 ◽  
Author(s):  
Heath Ecroyd ◽  
Brett Nixon ◽  
Jean-Louis Dacheux ◽  
Russell C. Jones

The present review examines whether monotremes may help to resolve three questions relating to sperm production in mammals: why the testes descend into a scrotum in most mammals, why spermatozoa are infertile when they leave the testes and require a period of maturation in the specific milieu provided by the epididymides, and why ejaculated spermatozoa cannot immediately fertilise an ovum until they undergo capacitation within the female reproductive tract. Comparisons of monotremes with other mammals indicate that there is a need for considerable work on monotremes. It is hypothesised that testicular descent should be related to epididymal differentiation. Spermatozoa and ova from both groups share many of the proteins that are thought to be involved in gamete interaction, and although epididymal sperm maturation is significant it is probably less complex in monotremes than in other mammals. However, the monotreme epididymis is unique in forming spermatozoa into bundles of 100 with greatly enhanced motility compared with individual spermatozoa. Bundle formation involves a highly organised interaction with epididymal proteins, and the bundles persist during incubation in vitro, except in specialised medium, in which spermatozoa separate after 2–3 h incubation. It is suggested that this represents an early form of capacitation.


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