ChemInform Abstract: NATURAL PRODUCTS FROM MEDICINAL PLANTS, XXII. ISOLATION AND STRUCTURE ELUCIDATION OF A NEW PICROSIDE FROM PICRORHIZA KURROOA ROYLE AND BENTH

1977 ◽  
Vol 8 (43) ◽  
Author(s):  
K. WEINGES ◽  
K. KUENSTLER
Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 1094
Author(s):  
Melissa M. Cadelis ◽  
Soeren Geese ◽  
Benedict B. Uy ◽  
Daniel R. Mulholland ◽  
Shara J. van de Pas ◽  
...  

Antimicrobial bioassay-guided fractionation of the endophytic fungi Neofusicoccum australe led to the isolation of a new unsymmetrical naphthoquinone dimer, neofusnaphthoquinone B (1), along with four known natural products (2–5). Structure elucidation was conducted by nuclear magnetic resonance (NMR) spectroscopic methods, and the antimicrobial activity of all the natural products was investigated, revealing 1 to be moderately active towards methicillin-resistant Staphylococcus aureus (MRSA) with a minimum inhibitory concentration (MIC) of 16 µg/mL.


Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3235
Author(s):  
Melissa M. Cadelis ◽  
Hugo Gordon ◽  
Alex Grey ◽  
Soeren Geese ◽  
Daniel R. Mulholland ◽  
...  

Fungi have become an invaluable source of bioactive natural products, with more than 5 million species of fungi spanning the globe. Fractionation of crude extract of Neodidymelliopsis sp., led to the isolation of a novel polyketide, (2Z)-cillifuranone (1) and five previously reported natural products, (2E)-cillifuranone (2), taiwapyrone (3), xylariolide D (4), pachybasin (5), and N-(5-hydroxypentyl)acetamide (6). It was discovered that (2Z)-cillifuranone (1) was particularly sensitive to ambient temperature and light resulting in isomerisation to (2E)-cillifuranone (2). Structure elucidation of all the natural products were conducted by NMR spectroscopic techniques. The antimicrobial activity of 2, 3, and 5 were evaluated against a variety of bacterial and fungal pathogens. A sodium [1-13C] acetate labelling study was conducted on Neodidymelliopsis sp. and confirmed that pachybasin is biosynthesised through the acetate polyketide pathway.


2021 ◽  
Vol 22 ◽  
Author(s):  
Harsha Negi ◽  
Meenakshi Gupta ◽  
Ramanpreet Walia ◽  
Moayad Khataibeh ◽  
Maryam Sarwat

: Obesity is a major lifestyle disorder and it is correlated with several ailments. The prevalence of obesity has elevated over the years and it has become a global health problem. The drugs presently used for managing obesity have several side-effects associated with them such as diarrhoea, leakage of oily stools, etc. On the contrary, herbal plants and natural products are considered safe for use because they have lesser side effects. New compounds isolated from medicinal plants are screened and identified to determine their effectiveness and potential in preventing abnormal weight gain. In this review, the medicinal plants and natural materials were surveyed across the literature to cover those that have potential for managing and controlling weight gain, and their mechanism of action, active component, and experimental methodologies are also included. These herbal products can be developed as formulations for therapeutic use in obesity. The herbal plants mentioned in the review are classified based on their mechanism of action: inhibition of pancreatic lipase and appetite suppression activities. The ability to inhibit pancreatic lipase enzyme has been used to determine the effectiveness of herbal products for the prevention of abnormal weight gain because of its action on dietary fat and suppression of appetite. This review is an attempt to summarize the herbal plants and natural products that can be used to develop formulations effective in controlling weight gain and obesity.


2021 ◽  
Vol 20 ◽  
Author(s):  
Choy Ker Woon ◽  
Wong Kah Hui ◽  
Razif Abas ◽  
Muhammad Huzaimi Haron ◽  
Srijit Das ◽  
...  

: Alzheimer's disease (AD) affects the elderly and is characterized by progressive neurodegeneration caused by different pathologies. The most significant challenges in treating AD include the inability of medications to reach the brain because of its poor solubility, low bioavailability, and the presence of the blood-brain barrier (BBB). Additionally, current evidence suggests the disruption of BBB plays an important role in the pathogenesis of AD. One of the critical challenges in treating AD is the ineffective treatments and its severe adverse effects. Nanotechnology offers an alternative approach to facilitate the treatment of AD by overcoming the challenges in drug transport across the BBB. Various nanoparticles (NP) loaded with natural products were reported to aid in drug delivery for the treatment of AD. The nano- sized entities of NP are great platforms for incorporating active materials from natural products into formulations that can be delivered effectively to the intended action site without compromising the material’s bioactivity. The review highlights the applications of medicinal plants, their derived components, and various nanomedicine-based approaches for the treatment of AD. The combination of medicinal plants and nanotechnology may lead to new theragnostic solutions for the treatment of AD in the future.


2015 ◽  
Vol 2015 ◽  
pp. 1-2 ◽  
Author(s):  
Shixin Deng ◽  
Shao-Nong Chen ◽  
Jian Yang

Author(s):  
BodaneArun Kumar

The present work is attempt has been made to compile the some ethno-medicinal plants and eco-friendly natural colors yielding flowering plants their preparations used for cure of diseases and information of flowering plants with the list of plants from B.S.N. Govt. P.G. College campus Shajapur, India. The present study focused on some important plants having medicinal uses and color yielding potential. Now-a-days natural products and herbal medicines have been recommended for the treatment of various diseases. The present study of ethno-medicinal and natural colors yielding flowering plants is helpful for local peoples of Shajapur.


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