scholarly journals The Chemistry, Biochemistry and Pharmacology of Marine Natural Products from Leptolyngbya, a Chemically Endowed Genus of Cyanobacteria

Marine Drugs ◽  
2020 ◽  
Vol 18 (10) ◽  
pp. 508
Author(s):  
Yueying Li ◽  
C. Benjamin Naman ◽  
Kelsey L. Alexander ◽  
Huashi Guan ◽  
William H. Gerwick
Keyword(s):  
Nitrogen Fixation ◽  
Drug Discovery ◽  
Secondary Metabolites ◽  
Primary Productivity ◽  
Algal Blooms ◽  
Biological Activities ◽  
Biosynthetic Pathways ◽  
Drug Discovery And Development ◽  
Ecological Habitats ◽  
Product Chemistry

Leptolyngbya, a well-known genus of cyanobacteria, is found in various ecological habitats including marine, fresh water, swamps, and rice fields. Species of this genus are associated with many ecological phenomena such as nitrogen fixation, primary productivity through photosynthesis and algal blooms. As a result, there have been a number of investigations of the ecology, natural product chemistry, and biological characteristics of members of this genus. In general, the secondary metabolites of cyanobacteria are considered to be rich sources for drug discovery and development. In this review, the secondary metabolites reported in marine Leptolyngbya with their associated biological activities or interesting biosynthetic pathways are reviewed, and new insights and perspectives on their metabolic capacities are gained.

scholarly journals Trichoderma: A Treasure House of Structurally Diverse Secondary Metabolites With Medicinal Importance

2021 ◽  
Vol 12 ◽  
Author(s):  
Jian-Long Zhang ◽  
Wen-Li Tang ◽  
Qing-Rong Huang ◽  
You-Zhi Li ◽  
Mao-Lian Wei ◽  
...  
Keyword(s):  
Drug Discovery ◽  
Secondary Metabolites ◽  
Biological Activities ◽  
Foreseeable Future ◽  
Human History ◽  
Comprehensive Overview ◽  
Specialized Metabolites ◽  
Chemical Structures ◽  
Drug Leads ◽  
New Strategies

Fungi play an irreplaceable role in drug discovery in the course of human history, as they possess unique abilities to synthesize diverse specialized metabolites with significant medicinal potential. Trichoderma are well-studied filamentous fungi generally observed in nature, which are widely marketed as biocontrol agents. The secondary metabolites produced by Trichoderma have gained extensive attention since they possess attractive chemical structures with remarkable biological activities. A large number of metabolites have been isolated from Trichoderma species in recent years. A previous review by Reino et al. summarized 186 compounds isolated from Trichoderma as well as their biological activities up to 2008. To update the relevant list of reviews of secondary metabolites produced from Trichoderma sp., we provide a comprehensive overview in regard to the newly described metabolites of Trichoderma from the beginning of 2009 to the end of 2020, with emphasis on their chemistry and various bioactivities. A total of 203 compounds with considerable bioactivities are included in this review, which is worth expecting for the discovery of new drug leads and agrochemicals in the foreseeable future. Moreover, new strategies for discovering secondary metabolites of Trichoderma in recent years are also discussed herein.

scholarly journals SCREENING OF PHYTOCHEMICAL CONSTITUENTS IN SOLVENT EXTRACTS OF ACORUS CALAMUS

10.26524/kr9 ◽  
2014 ◽  
Vol 1 (1) ◽  
pp. 38-41
Author(s):  
Gunavathy N ◽  
Megala N
Keyword(s):  
Drug Discovery ◽  
Medicinal Plants ◽  
Secondary Metabolites ◽  
Screening Tests ◽  
Acorus Calamus ◽  
Therapeutic Effects ◽  
Preliminary Screening ◽  
Drug Discovery And Development ◽  
Chemical Screening ◽  
Phytochemical Constituents

Plants have the ability to synthesize mixtures of structurally diverse bio-active compound, with multiple and mutually potential therapeutic effects. Acorus calamus a medicinal harp is known to be rich in β asarone in its composition. The rhizome of this plant appears to have traditional usage for the treatment ofinsomnia, melancholia, remittent fever, delirium, neurosis, cough etc. The solvent extracts of the drug yielding plants were subjected for preliminary phyto-chemical screening, before evaluation of their biological activity.The curative properties of medicinal plants are perhaps due to the presence of various secondary metabolites such as alkaloids, flavonoids, glycosides, phenols, saponins, sterols etc. The successive extracts of root of Acorus calamus revealed the presence of tannins, flavonoids, steroids, glycosides, alkaloids, proteins and phenols. The preliminary screening tests may be useful in the detection of the bioactive principles and subsequently may lead to the drug discovery and development.

scholarly journals VIRTUAL SCREENING STATEGIES IN DRUG DISCOVERY – A BRIEF OVERVIEW

2021 ◽  
Vol 59 (4) ◽  
pp. 415
Author(s):  
Quan Minh PHAM ◽  
Long Quoc PHAM
Keyword(s):  
Drug Discovery ◽  
Virtual Screening ◽  
Development Process ◽  
Biological Activities ◽  
Computer Aided Drug Design ◽  
Computational Approaches ◽  
Drug Discovery And Development ◽  
Drug Lead ◽  
Lead Identification ◽  
Computer Aided

Computer-aided drug design has now become a compulsory tool in the drug discovery and development process which uses computational approaches to discover potential compounds with expected biological activities. Firstly, this review provides a comprehensive introduction of the virtual screening technique, knowledge and advances in both SBVS and LBVS strategies also presented. Secondly, recent database of compounds provided worldwide and drug-like parameters which are helpful in supporting the VS process will be discussed. These information will provides a good platform to estimate the advance of applying these techniques in the new drug-lead identification and optimization.

scholarly journals Biosynthesis and metabolic engineering of pseudo-oligosaccharides

2018 ◽  
Vol 2 (3) ◽  
pp. 405-417 ◽  
Author(s):  
Abdullah R. Alanzi ◽  
Ananiya A. Demessie ◽  
Taifo Mahmud
Keyword(s):  
Metabolic Engineering ◽  
Secondary Metabolites ◽  
Metabolic Pathways ◽  
Biological Activities ◽  
Economic Value ◽  
Review Article ◽  
Plant Diseases ◽  
Biosynthetic Pathways ◽  
Fermentation Conditions ◽  
Chemical Structures

Pseudo-oligosaccharides are microbial-derived secondary metabolites whose chemical structures contain pseudosugars (glycomimetics). Owing to their high resemblance to the molecules of life (carbohydrates), most pseudo-oligosaccharides show significant biological activities. Some of them have been used as drugs to treat human and plant diseases. Because of their significant economic value, efforts have been put into understanding their biosynthesis, optimizing their fermentation conditions, and engineering their metabolic pathways to obtain better production yields. Many unusual enzymes participating in diverse biosynthetic pathways to pseudo-oligosaccharides have been reported. Various methods and conditions to improve the production yields of the target compounds and eliminate byproducts have also been developed. This review article describes recent studies on the biosynthesis, fermentation optimization, and metabolic engineering of high-value pseudo-oligosaccharides.

scholarly journals Chiral Derivatives of Xanthones with Antimicrobial Activity

Molecules ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 314 ◽  
Author(s):  
Joana Araújo ◽  
Carla Fernandes ◽  
Madalena Pinto ◽  
Maria Tiritan
Keyword(s):  
Antimicrobial Activity ◽  
Natural Products ◽  
Drug Discovery ◽  
Biological Activities ◽  
World Health ◽  
Natural Sources ◽  
Drug Discovery And Development ◽  
The World ◽  
Health Organization ◽  
Derivatives Of

According to the World Health Organization, the exacerbated use of antibiotics worldwide is increasing multi-resistant infections, especially in the last decade. Xanthones are a class of compounds receiving great interest in drug discovery and development that can be found as natural products or obtained by synthesis. Many derivatives of xanthones are chiral and associated with relevant biological activities, including antimicrobial. The aim of this review is to compile information about chiral derivatives of xanthones from natural sources and their synthesized examples with antimicrobial activity.

Marine Actinomycetes-derived Natural Products

2020 ◽  
Vol 19 (31) ◽  
pp. 2868-2918 ◽  
Author(s):  
Chengfang Yang ◽  
Rui Qian ◽  
Yao Xu ◽  
Junxi Yi ◽  
Yiwen Gu ◽  
...  
Keyword(s):  
Natural Products ◽  
Drug Discovery ◽  
Secondary Metabolites ◽  
Metabolic Pathways ◽  
Biological Activities ◽  
Living Environment ◽  
Marine Actinomycetes ◽  
Bioactive Substances ◽  
Lead Compounds

: Actinomycetes is an abundant resource for discovering a large number of lead compounds, which play an important role in microbial drug discovery. Compared to terrestrial microorganisms, marine actinomycetes have unique metabolic pathways because of their special living environment, which has the potential to produce a variety of bioactive substances. In this paper, secondary metabolites isolated from marine actinomycetes are reviewed (2013-2018), most of which exhibited cytotoxic, antibacterial, and antiviral biological activities.

Recent developments of quinoline derivatives and their potential biological activities

2020 ◽  
Vol 17 ◽  
Author(s):  
Mustapha Dib ◽  
Hajiba Ouchetto ◽  
Khadija Ouchetto ◽  
Abderrafia Hafid ◽  
Mostafa Khouili
Keyword(s):  
Drug Discovery ◽  
Organic Synthesis ◽  
Heterocyclic Compounds ◽  
Recent Progress ◽  
Biological Activities ◽  
Quinoline Derivatives ◽  
Quinoline Ring ◽  
Research Groups ◽  
Drug Discovery And Development ◽  
Recent Developments

: Heterocyclic compounds containing the quinoline ring play a significant role in organic synthesis and therapeutic chemistry. Polyfunctionalized quinolines have attracted the attention of many research groups, especially those who work on the drug discovery and development. These derivatives have been widely explored by the research biochemists and are reported to possess wide biological activities. This review focuses on the recent progress in the synthesis of heterocyclic compounds based-quinoline and their potential biological activities.

scholarly journals Exploring Chemical Diversity of Phorbas Sponges as a Source of Novel Lead Compounds in Drug Discovery

2021 ◽  
Author(s):  
Alessia Caso ◽  
Fernanda Barbosa da Silva ◽  
Germana Esposito ◽  
Roberta Teta ◽  
Gerardo Della Sala ◽  
...  
Keyword(s):  
Natural Products ◽  
Drug Discovery ◽  
Secondary Metabolites ◽  
Marine Natural Products ◽  
Biological Activities ◽  
Great Majority ◽  
Marine Sponges ◽  
Chemical Diversity ◽  
Lead Compounds ◽  
Anti Inflammatory

Porifera, commonly referred to as marine sponges, have stood out as major producers of marine natural products (MNPs). Sponges of the genus Phorbas have attracted much attention along years. They are widespread in all continents, and several structurally unique compounds have been identified from species of this genus. Terpenes, mainly sesterterpenoids, represent the great majority of secondary metabolites isolated from Phorbas species, even though several alkaloids and steroids have also been reported. Many of these compounds have shown a variety of biological activities. Particularly, Phorbas sponges have been demonstrated to be a source of cytotoxic metabolites. In addition, MNPs exhibiting cytostatic, antimicrobial and anti-inflammatory activities, have been isolated and structurally characterized. This work brings an overview of Phorbas secondary metabolites reported since the first study published in 1993 until 2020, and their biological activities.

scholarly journals Exploring Chemical Diversity of Phorbas Sponges as a Source of Novel Lead Compounds in Drug Discovery

Marine Drugs ◽  
2021 ◽  
Vol 19 (12) ◽  
pp. 667
Author(s):  
Alessia Caso ◽  
Fernanda Barbosa da Silva ◽  
Germana Esposito ◽  
Roberta Teta ◽  
Gerardo Della Sala ◽  
...  
Keyword(s):  
Natural Products ◽  
Drug Discovery ◽  
Secondary Metabolites ◽  
Marine Natural Products ◽  
Biological Activities ◽  
Marine Sponges ◽  
Chemical Diversity ◽  
Lead Compounds ◽  
Synthetic Routes ◽  
Anti Inflammatory

Porifera, commonly referred to as marine sponges, are acknowledged as major producers of marine natural products (MNPs). Sponges of the genus Phorbas have attracted much attention over the years. They are widespread in all continents, and several structurally unique compounds have been identified from this species. Terpenes, mainly sesterterpenoids, are the major secondary metabolites isolated from Phorbas species, even though several alkaloids and steroids have also been reported. Many of these compounds have presented interesting biological activities. Particularly, Phorbas sponges have been demonstrated to be a source of cytotoxic metabolites. In addition, MNPs exhibiting cytostatic, antimicrobial, and anti-inflammatory activities have been isolated and structurally characterized. This review provides an overview of almost 130 secondary metabolites from Phorbas sponges and their biological activities, and it covers the literature since the first study published in 1993 until November 2021, including approximately 60 records. The synthetic routes to the most interesting compounds are briefly outlined.

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