Results 21 to 30 of about 479 (139)

Skeletal Editing: Interconversion of Arenes and Heteroarenes

Helvetica Chimica Acta, Volume 106, Issue 3, March 2023., 2023
Abstract Skeletal editing involves making specific point‐changes to the core of a molecule through the selective insertion, deletion or exchange of atoms. It thus represents a potentially powerful strategy for the step‐economic modification of complex substrates and is a perfect complement to methods such as C−H functionalization that target the ...
Ben W. Joynson, Liam T. Ball
wiley   +1 more source

Early land plants: Plentiful but neglected nutritional resources for herbivores?

Ecology and Evolution, Volume 12, Issue 12, December 2022., 2022
In this paper, we explore the unknown reason(s) why herbivores rarely seem to attack early land plants like mosses and ferns. Our study, in which we looked at the performance of an arthropod and a gastropod on 15 species of such plants, yields surprising results that disqualify some of the common notions about early land plants.
Audrey Duhin, Ricardo A. R. Machado, Ted C. J. Turlings, Gregory Röder   +3 more
wiley   +1 more source

Methods of isolation and bioactivity of alkaloids obtained from selected species belonging to the Amaryllidaceae and Lycopodiaceae families

Current Issues in Pharmacy and Medical Sciences, 2021
Alkaloids obtained from plants belonging to the Amaryllidaceae and Lycopodiaceae families are of great interest due to their numerous properties. They play a very important role mainly due to their strong antioxidant, anxiolytic and anticholinesterase ...
Dymek Aleksandra, Mroczek Tomasz
doaj   +1 more source

Bioactive Compounds and Their Derivatives: An Insight into Prospective Phytotherapeutic Approach against Alzheimer’s Disease

Oxidative Medicine and Cellular Longevity, Volume 2022, Issue 1, 2022., 2022
Alzheimer’s disease (AD) is a common neurodegenerative brain disorder that causes cellular response alterations, such as impaired cholinergic mechanism, amyloid‐beta (Aβ) AD aggregation, neuroinflammation, and several other pathways. AD is still the most prevalent form of dementia and affects many individuals across the globe.
Fahadul Islam, Jannatul Fardous Khadija, Md. Harun-Or-Rashid, Md. Saidur Rahaman, Mohamed H. Nafady, Md. Rezaul Islam, Aklima Akter, Talha Bin Emran, Polrat Wilairatana, Mohammad S. Mubarak, Sachchida Nand Rai   +10 more
wiley   +1 more source

Biogenic Phytochemicals Modulating Obesity: From Molecular Mechanism to Preventive and Therapeutic Approaches

Evidence-Based Complementary and Alternative Medicine, Volume 2022, Issue 1, 2022., 2022
The incidence of obesity and over bodyweight is emerging as a major health concern. Obesity is a complex metabolic disease with multiple pathophysiological clinical conditions as comorbidities are associated with obesity such as diabetes, hypertension, cardiovascular disorders, sleep apnea, osteoarthritis, some cancers, and inflammation‐based clinical ...
Vikram Kumar, Desh Deepak Singh, Sudarshan Singh Lakhawat, Nusrath Yasmeen, Aishwarya Pandey, Rajeev K. Singla, Gabriel A. Agbor   +6 more
wiley   +1 more source

Oxidation of cadaverine by putrescine oxidase from Rhodococcus erythropolis

Journal of Chemical Technology &Biotechnology, Volume 96, Issue 10, Page 2950-2955, October 2021., 2021
Abstract BACKGROUND Putrescine oxidase (EC 1.4.3.10) is of interest for the microbial production of unsubstituted platform nitrogen (N‐)heterocycles, because it only requires inexpensive oxygen as co‐substrate. Putrescine oxidase from Rhodococcus erythropolis (Re‐PuO) was shown previously to catalyze the oxidation of cadaverine; however, there is ...
Valentine E Anyanwu, Stephen J Hall, Gill Stephens, Anca Pordea   +3 more
wiley   +1 more source

Synthesis of the Core Structure of Palhinine A

European Journal of Organic Chemistry, Volume 2021, Issue 17, Page 2549-2556, May 7, 2021., 2021
An approach to the core structure of the alkaloid palhinine A is presented. Starting with an easily available 2,5‐disubstituted cyclohexanone an allyl group was introduced into the 3‐position by a Grignard addition/oxy‐Cope sequence. A subsequent transannular aldol reaction led to a bicyclo[2.2.2]octanone derivative.
Dominik Gaugele, Martin E. Maier
wiley   +1 more source

Nonconventional Techniques in Plant Alkaloid Extraction: A Decade of Progress (2014-2023). [PDF]

Chem Biodivers
This figure seeks to represent the evolution of the different unconventional approaches that were adopted for the extraction of plant‐derived alkaloids during the decade from 2014 to 2023. ABSTRACT Plant metabolism encompasses primary and secondary pathways, with secondary metabolism yielding diverse natural products crucial for plant adaptation and ...
Sipoloni VM, Bassicheto MC, de Oliveira MV, de Souza ABDS, Alves GM, Veiga TAM.   +5 more
europepmc   +2 more sources

Comparison of 454-ESTs from Huperzia serrata and Phlegmariurus carinatus reveals putative genes involved in lycopodium alkaloid biosynthesis and developmental regulation

BMC Plant Biology, 2010
Background Plants of the Huperziaceae family, which comprise the two genera Huperzia and Phlegmariurus, produce various types of lycopodium alkaloids that are used to treat a number of human ailments, such as contusions, swellings and strains.
Steinmetz André, Sun Yongzhen, Song Jingyuan, Wu Qiong, Sun Chao, Li Ying, Luo Hongmei, Chen Shilin   +7 more
doaj   +1 more source

Quinolizidine alkaloid biosynthesis: recent advances and future prospects

Frontiers in Plant Science, 2012
Lys-derived alkaloids, including piperidine, quinolizidine, indolizidine, and lycopodium alkaloids, are widely distributed throughout the plant kingdom.
Somnuk eBunsupa, Mami eYamazaki, Kazuki eSaito, Kazuki eSaito   +3 more
doaj   +1 more source