scholarly journals Sesquiterpenoids Specially Produced by Fungi: Structures, Biological Activities, Chemical and Biosynthesis (2015–2020)

2021 ◽  
Vol 7 (12) ◽  
pp. 1026
Author(s):  
Quan Dai ◽  
Fa-Lei Zhang ◽  
Tao Feng
Keyword(s):  
Natural Products ◽  
Biological Activities ◽  
Biologically Active ◽  
Structural Variations ◽  
Marine Habitat ◽  
Ecological Functions ◽  
Terrestrial Environment ◽  
Eukaryotic Microbes ◽  
Micro Organisms ◽  
Active Natural

Fungi are widely distributed in the terrestrial environment, freshwater, and marine habitat. Only approximately 100,000 of these have been classified although there are about 5.1 million characteristic fungi all over the world. These eukaryotic microbes produce specialized metabolites and participate in a variety of ecological functions, such as quorum detection, chemical defense, allelopathy, and maintenance of symbiosis. Fungi therefore remain an important resource for the screening and discovery of biologically active natural products. Sesquiterpenoids are arguably the richest natural products from plants and micro-organisms. The rearrangement of the 15 high-ductility carbons gave rise to a large number of different skeletons. At the same time, abundant structural variations lead to a diversification of biological activity. This review examines the isolation, structural determination, bioactivities, and synthesis of sesquiterpenoids that were specially produced by fungi over the past five years (2015‒2020).

scholarly journals Palladium-Catalyzed Coupling Reactions on Functionalized 2-Trifluoromethyl-4-chromenone Scaffolds: Synthesis of Highly Functionalized Trifluoromethyl Heterocycles

Synthesis ◽  
2018 ◽  
Vol 51 (06) ◽  
pp. 1342-1352 ◽  
Author(s):  
Javier Izquierdo ◽  
Atul Jain ◽  
Sarki Abdulkadir ◽  
Gary Schiltz
Keyword(s):  
Natural Products ◽  
Organic Synthesis ◽  
Biological Activities ◽  
Structural Complexity ◽  
Biologically Active ◽  
Coupling Reactions ◽  
Trifluoromethyl Group ◽  
Palladium Catalyzed ◽  
Active Natural

The chromenone core is an ubiquitous group in biologically active natural products and has been extensively used in organic synthesis. Fluorine-derived compounds, including those with a trifluoromethyl group (CF3), have shown enhanced biological activities in numerous pharmaceuticals compared with their non-fluorinated analogues. 2-Trifluoromethylchromenones can be readily functionalized at the 8- and 7-positions, providing chromenones cores of high structural complexity, which are excellent precursors for numerous trifluoromethyl heterocycles.

A comprehensive review on pyranoindole-containing agents

2021 ◽  
Vol 28 ◽  
Author(s):  
Alessia Catalano ◽  
Domenico Iacopetta ◽  
Jessica Ceramella ◽  
Carmela Saturnino ◽  
Maria Stefania Sinicropi
Keyword(s):  
Natural Products ◽  
Heterocyclic Compounds ◽  
Biological Activities ◽  
Therapeutic Agents ◽  
Biologically Active ◽  
Bioactive Molecules ◽  
Structural Motif ◽  
Huge Number ◽  
Naturally Occurring ◽  
Active Natural

: A huge number of nitrogen-containing heterocyclic compounds are ubiquitous in natural products, pharmaceuticals, and bioactive molecules. Among these, the pyranoindole represents an important structural motif, as it constitutes the central subunit in both the biologically active natural products and therapeutic agents. Talathermophilins, notoamides, norgeamides, carneamides, and versicamides are examples of naturally occurring pyranoindoles, while the well-known etodolac and pemedolac are a tetrahydropyrano[3,4-b]indole deriving from synthetic procedures. Besides the well-known antiinflammatory and fibrinolytic activity, molecules comprising the pyranoindole framework have been demonstrated to exhibit various biological activities, such as antiulcer, antidepressant, analgesic, and antiproliferative. Herein, we report the most common natural and synthetic products bearing a pyranoindole nucleus, their syntheses, and biological activities.

scholarly journals Secondary Metabolites from the Marine Sponges of the Genus Petrosia: A Literature Review of 43 Years of Research

Marine Drugs ◽  
2021 ◽  
Vol 19 (3) ◽  
pp. 122
Author(s):  
Yeon-Ju Lee ◽  
Yeonwoo Cho ◽  
Huynh Nguyen Khanh Tran
Keyword(s):  
Natural Products ◽  
Secondary Metabolites ◽  
Literature Review ◽  
Biological Activities ◽  
Marine Sponges ◽  
Biologically Active ◽  
New Drugs ◽  
Chemical Structures ◽  
Active Natural

Sponges are prolific sources of various natural products that have provided the chemical scaffolds for new drugs. The sponges of the genus Petrosia inhabit various regions and contain a variety of biologically active natural products such as polyacetylenes, sterols, meroterpenoids, and alkaloids. This review aims to provide a comprehensive summary of the chemical structures and biological activities of Petrosia metabolites covering a period of more than four decades (between 1978 and 2020). It is also described in this review that the major groups of metabolites from members of the genus Petrosia differed with latitude. The polyacetylenes were identified to be the most predominant metabolites in Petrosia sponges in temperate regions, while tropical Petrosia species were sources of a greater variety of metabolites, such as meroterpenoids, sterols, polyacetylenes, and alkaloids.

scholarly journals Bioprospecting of Microbes for Valuable Compounds to Mankind

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Nurul-Syakima Ab Mutalib ◽  
Sunny Hei Wong ◽  
Hooi-Leng Ser ◽  
Acharaporn Duangjai ◽  
Jodi Woan-Fei Law ◽  
...  
Keyword(s):  
Natural Products ◽  
Pharmaceutical Industry ◽  
Secondary Metabolites ◽  
Ecological Niche ◽  
Chemical Structure ◽  
Biological Activities ◽  
Biologically Active ◽  
Critical Insight ◽  
Valuable Compounds ◽  
Active Natural

The most biological multiplicity on this planet is almost certainly concealed in soils. Many valuable bacteria had been extensively dispersed in soils worldwide, with soils from terrestrial, desserts and Antarctic. Hence, soils become an intensively utilized ecological niche for the inhabitants to generate various useful biologically active natural products such asantibiotics, antifungal, antiviral, antioxidant, neuroprotection, anticancer and other important compounds. Bacteria including Actinobacteria have been exceptionally valuable for the pharmaceutical industry due to their limitless capability to generate secondary metabolites with various biological activities and chemical structure. Therefore, this article aims to provide critical insight of bioprospecting of microbes for valuable compounds to mankind.

Biologically active natural products from Cassine viburnifolia

Planta Medica ◽  
2015 ◽  
Vol 81 (11) ◽  
Author(s):  
T Grkovic ◽  
R Akee ◽  
J Evans ◽  
JM Collins ◽  
B O'Keefe
Keyword(s):  
Natural Products ◽  
Biologically Active ◽  
Active Natural

scholarly journals Natural Products from Tongan Marine Organisms

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4534
Author(s):  
Taitusi Taufa ◽  
Ramesh Subramani ◽  
Peter Northcote ◽  
Robert Keyzers
Keyword(s):  
Natural Products ◽  
Pacific Ocean ◽  
Biological Activities ◽  
Marine Sponges ◽  
Marine Organisms ◽  
Biologically Active ◽  
Geographic Variability ◽  
South Pacific Ocean ◽  
New Novel ◽  
Rich Diversity

The islands of the South Pacific Ocean have been in the limelight for natural product biodiscovery, due to their unique and pristine tropical waters and environment. The Kingdom of Tonga is an archipelago in the central Indo-Pacific Ocean, consisting of 176 islands, 36 of which are inhabited, flourishing with a rich diversity of flora and fauna. Many unique natural products with interesting bioactivities have been reported from Indo-Pacific marine sponges and other invertebrate phyla; however, there have not been any reviews published to date specifically regarding natural products from Tongan marine organisms. This review covers both known and new/novel Marine Natural Products (MNPs) and their biological activities reported from organisms collected within Tongan territorial waters up to December 2020, and includes 109 MNPs in total, the majority from the phylum Porifera. The significant biological activity of these metabolites was dominated by cytotoxicity and, by reviewing these natural products, it is apparent that the bulk of the new and interesting biologically active compounds were from organisms collected from one particular island, emphasizing the geographic variability in the chemistry between these organisms collected at different locations.

Synthetic studies on biologically active natural products by a chemicoenzymatic approach

Tetrahedron ◽  
1984 ◽  
Vol 40 (1) ◽  
pp. 145-152 ◽  
Author(s):  
Masaji Ohno ◽  
Yukishige Ito ◽  
Masafumi Arita ◽  
Tomoyuki Shibata ◽  
Kunitomo Adachi ◽  
...  
Keyword(s):  
Natural Products ◽  
Biologically Active ◽  
Synthetic Studies ◽  
Active Natural

Back to the Roots: Prediction of Biologically Active Natural Products from Ayurveda Traditional Medicine

2011 ◽  
Vol 30 (2-3) ◽  
pp. 181-187 ◽  
Author(s):  
Honey Polur ◽  
Tejal Joshi ◽  
Christopher T. Workman ◽  
Gandhidas Lavekar ◽  
Irene Kouskoumvekaki
Keyword(s):  
Natural Products ◽  
Traditional Medicine ◽  
Biologically Active ◽  
Active Natural

The Exploitation of Enzymatically-Derivedcis-1,2-Dihydrocatechols and Related Compounds in the Synthesis of Biologically Active Natural Products

2017 ◽  
Vol 18 (2) ◽  
pp. 239-264 ◽  
Author(s):  
Ehab S. Taher ◽  
Martin G. Banwell ◽  
Joshua N. Buckler ◽  
Qiao Yan ◽  
Ping Lan
Keyword(s):  
Natural Products ◽  
Biologically Active ◽  
Related Compounds ◽  
Active Natural
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