Isolation, Synthesis and Medicinal Significance of Marine Pyridoacridine Alkaloids

2019 ◽  
Vol 23 (13) ◽  
pp. 1469-1495
Author(s):  
Saqlain Haider ◽  
Amar G. Chittiboyina ◽  
Ikhlas A. Khan

Pyridoacridine alkaloids, distributed in marine organisms have emerged as an important class of compounds due to their uniqure chemical architecture, diversity and medicinal significance. These alkaloids are reported to exhibit a wide array of biological activities like anti-cancer, anti-bacterial, ant-viral, anti-fungal and anti-parasitic activities. The present review highlights the isolation, synthesis and medicinal significance of this important class of pyridoacridine alkaloids.

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
C Nirmala ◽  
M Sridevi

Abstract Background In modern therapeutics, various human pathological disturbances were treated with the plant-based products. Waltheria indica Linn, a perennial herb, was commonly used in traditional medicine worldwide against various ailments such as cough, dysentery, diarrhea, bladder disorder, hemoptysis, inflammations, neuralgia, wounds, and ulcers. Main body The shrub was majorly distributed in tropical, subtropical regions and exists in many distinct local forms. Both the crude extracts and purified compounds from the whole plant and its parts showed wide pharmacological properties like antioxidant, analgesic, sedative, anti-bacterial, anti-fungal, and anti-parasitic. The phytochemical profile and traditional usage highlight the potency of the plant in the treatment of microbial infections and inflammatory diseases. Yet, additional studies are required for the confirmations of its traditional uses against other diseases. More detailed understanding of anti-cataract, anti-diabetics, asthma, anemia, and anti-cancer mechanism has to be explored. Though many research articles on the proposed plant are available, there has been a rising concern in the therapeutic property, especially on the alkaloids and flavonoids from this plant for drug design. Conclusion This article aims in a systematic and updated review on distribution, botany, traditional uses, phytocompounds, and relevant biological activities from each part of the plant. The information was collected from databases like PubMed, ScienceDirect, Web of Science, Google Scholar, books, dissertation, and reports via academic libraries that included more than 100 articles published since 1937. This ethnopharmacological study of the plant may create new insight into drug discovery to develop important novel leads against various biological targets.


Author(s):  
Iqra Sarfraz ◽  
Azhar Rasul ◽  
Ghulam Hussain ◽  
Muhammad Ajmal Shah ◽  
Bushra Nageen ◽  
...  

: Oxalis corniculata (Oxalidaceae) is a small decumbent and delicate appearing medicinal herb flourishing in warm temperate and tropical domains such as Pakistan and India. Main bioactive chemical constituents of Oxalis plant include several alkaloids, flavonoids, terpenoids, cardiac glycosides, saponins, phlobatannins along with steroids. Due to its polyphenolic, glycosides and flavonoid profile, it is proved to be protective in numerous ailments and exhibit various biological activities such as anti-fungal, anti-cancer, anti-oxidant, anti-bacterial, anti-diabetic, and cardioprotective. Moreover, bioactive phytochemicals from this plant possess significant wound healing potential. Our current effort intends to emphasize on the immense significance of this plant species, which have not been the subject matter of clinical trials and effective pharmacological studies, even though its favored usage has been stated. This review proposes that Oxalis corniculata possess potential for the cure of various diseases, however, further researches on isolation and characterization of bioactive compounds along with pre-clinical trials are compulsory to figure out its pharmacological applications.


Author(s):  
Rukhsana Tabassum ◽  
Muhammad Ashfaq ◽  
Hiroyuki Oku

Abstract:: Quinoline derivatives are considered as broad spectrum pharmacological compounds that exhibit wide range of biological activities. Integration of quinoline moiety can improve its physical and chemical properties and also pharmacological behavior. Due to its wide range of pharmaceutical applications it is very popular compound to design new drugs for treatment of multiple diseases like cancer, dengue fever, malaria, tuberculosis, fungal infections, AIDS, Alzheimer’s disease and diabetes . In this review our major focus is to pay attention on biological activities of quinoline compounds in treatment of these diseases such as, anti-viral, anti-cancer, anti-malarial, anti-bacterial, anti-fungal, anti-tubercular and anti-diabetic.


Author(s):  
Madhwi Ojha ◽  
Divya Yadav ◽  
Avinash Kumar ◽  
Suman Dasgupta ◽  
Rakesh Yadav

: 1, 8- Naphthyridine nucleus belongs to significant nitrogen-containing heterocyclic compounds which have garnered the interest of researchers due to its versatile biological activities. It is known to be used as an antimicrobial, anti-psychotic, anti-depressant, anti-convulsant, anti-Alzheimer’s, anti-cancer, analgesic, anti-inflammatory, antioxidant, anti-viral, anti-hypertensive, anti-malarial, pesticides, anti-platelets, and CB2 receptor agonist, etc. The present review highlights the framework of biological properties of synthesized 1, 8-naphthyridine derivatives developed by various research groups across the globe.


2020 ◽  
Vol 17 ◽  
Author(s):  
Zia Ul Haq Khan ◽  
Noor Samad Shah ◽  
Nawshad Muhammad ◽  
Arif Ullah Khan ◽  
Jibran Iqbal ◽  
...  

Abstract: In fact, electrochemical method (EC) is a specific and eco-friendly technique with several advantages over common organic synthesis methods. During EC no as such external catalysts are required to initiate the reaction, the current potential in itself acts as a catalyst. Most of the inactive organic compounds can be converted to active species by EC method. This method results in the synthesis of compounds with high yield and purity. This method is also good to be applied for the synthesis of thermally sensitive organic compounds. Such synthesis has significant selectivity and reactivity which enable the synthesis of such compounds that are not feasible while using the conventional methods. This review provides insight into the utilization of EC method in the synthesis of organic compounds and their derivatives. Various prerequisites for such synthesis have been highlighted. The EC method application for preparation of derivatives of benzofuran, and benzoxazole, oxidation of N, N, N’, N’tetramethyl-1,4-phenylenediamine, 5-diethoxy-4-morpholinoaniline, organic compounds containing C=N, benzyl alcohol to benzaldehyde and tetratomic Thioethers have been discussed in detail. In addition, the electrochemical synthesis of biomedical important compounds has been presented. The compounds synthesized through EC methods shows potential antimicrobial activity. Deferent researchers work to study the potential biological application of organic compounds synthesized through EC process. The anti-cancer, anti-bacterial, anti-fungal and other important biological activities has been investigated.


Author(s):  
Smriti Sahu ◽  
Prabhat Kumar Upadhyay ◽  
Pradeep Mishra

Aims: This assessment is all about to get imminent into 4-thiazolidinones and comprehensively reviewing this molecule. 4-Thiazolidinones are known for their wide-ranging biological activities. 4 - Thiazolidinones contains thiazolidine ring having carbonyl group in the 4-position. The chemistry of thiazolidinones has drawn scientific interest through the years because this particular ring system is the core structure in a variety of synthetic compounds with a broad spectrum of biological activities such as anti-bacterial, anti-fungal, insecticidal, anti-epileptic, anti-mycobacterial, anti- inflammatory, anti-parasitic, hypnotic and anti-cancer. Structural modifications on the 4-thiazolidinone moiety, either by replacing the aryl group with the heteroaryl scaffold or by incorporating different groups and moieties (A&B) on –CH– group of nucleus paving a new pathway for the future research. It necessitates to widely reviewing the structure, chemistry and pharmacological aspects of 4-thiazolidinones.


Author(s):  
Abiche Ekalu ◽  
Rachael Gbekele-Oluwa Ayo ◽  
James D. Habila ◽  
Ibrahim Hamisu

The medicinal herb Brachystelma togoense schtlr (Apocynaceae) is used traditionally for treatment of ailments.   The secondary metabolites, phaeophytin a, α-amyrin and lupeol were isolated from the CH2Cl2 and MeOH extracts of Brachystelma togoense.  The structures were elucidated using 1H, 13C and 2D NMR. These phytochemicals have previously being reported to have various biological activities such as anti-inflammatory, anti-fungal and anti-cancer. The presence of phaeophytin a, α-amyrin and lupeol in Brachystelma togoense justified the use of the plant for medicinal purpose in Nigeria.


Molecules ◽  
2018 ◽  
Vol 23 (8) ◽  
pp. 1976 ◽  
Author(s):  
Maria Marcotullio ◽  
Massimo Curini ◽  
Judith Becerra

The genus Bursera belongs to the family Burseraceae and has been used in traditional Mexican medicine for treating various pathophysiological disorders. The most representative phytochemicals isolated from this genus are terpenoids and lignans. Lignans are phenolic metabolites known for their antioxidant, apoptotic, anti-cancer, anti-inflammatory, anti-bacterial, anti-viral, anti-fungal, and anti-protozoal properties. Though the genus includes more than 100 species, we have attempted to summarize the biological activities of the 34 lignans isolated from selected Mexican Bursera plants.


2021 ◽  
Vol 8 (5) ◽  
pp. 365-378
Author(s):  
V. S. Anjana ◽  
P. Manoj Kumar

Benzotriazole (BTA) is a nitrogen containing heterocyclic derivative containing three nitrogen atoms at 1st, 2nd and 3rd positions with chemical formula C6H5N3. Benzotriazole and its derivatives have great significance in medicinal chemistry and these derivatives were used by several chemists for therapeutic conditions because it possessing a wide spectrum of pharmacological activities including anti bacterial, anti fungal, anti viral, anti inflammatory, anti hyperglycemic, anti hypertensive, anti cancer and analgesic activity. In this review, different synthetic methods for the preparation of benzotriazole, importance of benzotriazole derivatives in biomedical research, highlighting its biological behavior, versatile activities and Structure Activity Relationship (SAR) studies are described. This review will help the researchers to understand the structure activity relationships and improvise the concepts in their research field. Keywords: Benzotriazole, Anti microbial, Anthelmintic, Analgesic, Anti mycobacterial, Anti viral, Anti oxidative, Anti tumor, Anti inflammatory, Anti hyperglycemia, Anti fungal, Anticonvulsant activity.


2014 ◽  
pp. 98-101
Author(s):  
Thi Bich Hien Le ◽  
Viet Duc Ho ◽  
Thi Hoai Nguyen

Nowadays, cancer treatment has been a big challenge to healthcare systems. Most of clinical anti-cancer therapies are toxic and cause adverse effects to human body. Therefore, current trend in science is seeking and screening of natural compounds which possess antineoplastic activities to utilize in treatment. Uvaria L. - Annonaceae includes approximately 175 species spreading over tropical areas of Asia, Australia, Africa and America. Studies on chemical compositions and pharmacological effects of Uvaria showed that several compound classes in this genus such as alkaloid, flavonoid, cyclohexen derivaties, acetogenin, steroid, terpenoid, etc. indicate considerable biological activities, for example anti-tumor, anti-cancer, antibacterial, antifungal, antioxidant, etc. Specifically, anti-cancer activity of fractions of extract and pure isolated compounds stands out for cytotoxicity against many cancer cell lines. This study provides an overview of anti-cancer activity of Uvaria and suggests a potential for further studies on seeking and developing novel anti-cancer compounds. Key words: Anti-cancer, Uvaria.


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