Recent progress in andrographolide derivatization: structural modification and biological activity

2021 ◽  
Vol 21 ◽  
Author(s):  
Wang Wang ◽  
Yueying Yang ◽  
Yang Liu ◽  
Dejuan Sun ◽  
Hua Li ◽  
...  
Keyword(s):  
Biological Activity ◽  
Chemical Modification ◽  
Structural Modification ◽  
Recent Progress ◽  
Biological Activities ◽  
Structural Diversity ◽  
Traditional Chinese Medicines ◽  
Chinese Medicines ◽  
Novel Drugs ◽  
Labdane Diterpenoid

: Natural products have remarkable structural diversity and biological characteristics, providing researchers with more possibilities to develop novel drugs for disease therapeutics. Andrographolide, an ent-labdane diterpenoid from traditional Chinese medicines, Andrographis paniculata, exhibits a broad range of biological activities, which has been a hot area of research for several years. Up to now, lots of its derivatives with multiple bioactivities have been prepared through chemical modification. This review summarizes andrographolide derivatives prepared in the last ten years (2006-present), classifies them by different biological activities, and provides some discussion about the design of novel and potent derivatives.

Chemical Constituents, Quality Control, and Bioactivity of Epimedii Folium (Yinyanghuo)

2015 ◽  
Vol 43 (05) ◽  
pp. 783-834 ◽  
Author(s):  
Xiao-Jia Chen ◽  
Zheng-Hai Tang ◽  
Xi-Wen Li ◽  
Cai-Xiang Xie ◽  
Jin-Jian Lu ◽  
...  
Keyword(s):  
Quality Control ◽  
Nervous System ◽  
Cardiovascular Diseases ◽  
Bone Formation ◽  
Biological Activities ◽  
Chemical Constituents ◽  
Traditional Chinese Medicines ◽  
Active Components ◽  
Chinese Medicines ◽  
Anticancer Effects

Epimedii Folium (Yinyanghuo in Chinese) is one of the most commonly used traditional Chinese medicines. Its main active components are flavonoids, which exhibit multiple biological activities, such as promotion of bone formation and sexual function, protection of the nervous system, and prevention of cardiovascular diseases. Flavonoids also show anti-inflammatory and anticancer effects. Various effective methods, including genetic and chemical approaches, have been developed for the quality control of Yinyanghuo. In this review, the studies conducted in the last decade about the chemical constituents, quality control, and bioactivity of Yinyanghuo are summarized and discussed.

scholarly journals Monoterpenes and Their Derivatives—Recent Development in Biological and Medical Applications

2020 ◽  
Vol 21 (19) ◽  
pp. 7078
Author(s):  
Mariola Zielińska-Błajet ◽  
Joanna Feder-Kubis
Keyword(s):  
Biological Activity ◽  
Secondary Metabolites ◽  
Essential Oils ◽  
Structural Modification ◽  
Biological Activities ◽  
Plant Secondary Metabolites ◽  
Biologically Active ◽  
Pivotal Role ◽  
Medical Applications ◽  
Biological And Medical Applications

Monoterpenes, comprising hydrocarbons, are the largest class of plant secondary metabolites and are commonly found in essential oils. Monoterpenes and their derivatives are key ingredients in the design and production of new biologically active compounds. This review focuses on selected aliphatic, monocyclic, and bicyclic monoterpenes like geraniol, thymol, myrtenal, pinene, camphor, borneol, and their modified structures. The compounds in question play a pivotal role in biological and medical applications. The review also discusses anti-inflammatory, antimicrobial, anticonvulsant, analgesic, antiviral, anticancer, antituberculosis, and antioxidant biological activities exhibited by monoterpenes and their derivatives. Particular attention is paid to the link between biological activity and the effect of structural modification of monoterpenes and monoterpenoids, as well as the introduction of various functionalized moieties into the molecules in question.

scholarly journals Strategies to Improve the Efficiency of Transplantation with Mesenchymal Stem Cells for the Treatment of Ischemic Stroke: A Review of Recent Progress

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Yongchang Li ◽  
Wei Zhong ◽  
Xiangqi Tang
Keyword(s):  
Ischemic Stroke ◽  
Cerebral Ischemia ◽  
Poor Prognosis ◽  
Recent Progress ◽  
Traditional Chinese Medicines ◽  
Key Factors ◽  
Chinese Medicines ◽  
New Methods ◽  
Chemical Agents ◽  
Significant Burden

Cerebral ischemia is a common global disease that is characterized by a loss of neurological function and a poor prognosis in many patients. However, only a limited number of treatments are available for this condition at present. Given that the efficacies of these treatments tend to be poor, cerebral ischemia can create a significant burden on patients, families, and society. Mesenchymal stem cell (MSC) transplantation treatment has shown significant potential in animal models of ischemic stroke; however, the specific mechanisms underlying this effect have yet to be elucidated. Furthermore, clinical trials have yet to yield promising results. Consequently, there is an urgent need to identify new methods to improve the efficiency of MSC transplantation as an optimal treatment for ischemic stroke. In this review, we provide an overview of recent scientific reports concerning novel strategies that promote MSC transplantation as an effective therapeutic approach, including physical approaches, chemical agents, traditional Chinese medicines and extracts, and genetic modification. Our analyses showed that two key factors need to be considered if we are to improve the efficacy of MSC transplantation treatments: survival ability and homing ability. We also highlight the importance of other significant mechanisms, including the enhanced activation of MSCs to promote neurogenesis and angiogenesis, and the regulation of permeability in the blood-brain barrier. Further in-depth investigations of the specific mechanisms underlying MSC transplantation treatment will help us to identify effective methods that improve the efficiency of MSC transplantation for ischemic stroke. The development of safer and more effective methods will facilitate the application of MSC transplantation as a promising adjuvant therapy for the treatment of poststroke brain damage.

Recent Progress in Oleanolic Acid: Structural Modification and Biological Activity

2021 ◽  
Vol 21 ◽  
Author(s):  
Wang Wang ◽  
Yutong Li ◽  
Yan Li ◽  
Dejuan Sun ◽  
Hua Li ◽  
...  
Keyword(s):  
Oleanolic Acid ◽  
Structural Modification ◽  
Recent Progress ◽  
Biological Activities ◽  
Biological Effects ◽  
Biologically Active ◽  
In Vivo Models ◽  
Action Mechanisms

: Natural products have been proven as the main source of biologically active compounds, which are potentially useful for drug development. As one of the most studied pentacyclic triterpenes, oleanolic acid (OA) exhibits a broad range of biological activities and serves as a good scaffold for the development of novel derivatives that could be vital in drug discovery for various ailments. Up to now, many of its derivatives with multiple bioactivities have been prepared through chemical modification. This review summarizes the recent reports of OA derivatives (2016-present) and their biological effects and action mechanisms in vitro and in vivo models, and discusses the design of novel and potent derivatives.

scholarly journals Recent Progress of Propolis for Its Biological and Chemical Compositions and Its Botanical Origin

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
Viviane Cristina Toreti ◽  
Helia Harumi Sato ◽  
Glaucia Maria Pastore ◽  
Yong Kun Park
Keyword(s):  
Biological Activity ◽  
Chemical Composition ◽  
Phenolic Compounds ◽  
Recent Progress ◽  
Biological Activities ◽  
Folk Medicine ◽  
Chemical Compounds ◽  
Biological Properties ◽  
Chemical Compositions ◽  
Botanical Origin

Propolis is the generic name given to the product obtained from resinous substances, which is gummy and balsamic and which is collected by bees from flowers, buds, and exudates of plants. It is a popular folk medicine possessing a broad spectrum of biological activities. These biological properties are related to its chemical composition and more specifically to the phenolic compounds that vary in their structure and concentration depending on the region of production, availability of sources to collect plant resins, genetic variability of the queen bee, the technique used for production, and the season in which propolis is produced. Many scientific articles are published every year in different international journal, and several groups of researchers have focused their attention on the chemical compounds and biological activity of propolis. This paper presents a review on the publications on propolis and patents of applications and biological constituents of propolis.

scholarly journals Synthesis, Physical Characterization and Biological Activity of Some Schiff Base Complexes

2008 ◽  
Vol 5 (3) ◽  
pp. 620-626 ◽  
Author(s):  
R. Rajavel ◽  
M. Senthil Vadivu ◽  
C. Anitha
Keyword(s):  
Antimicrobial Activity ◽  
Biological Activity ◽  
Schiff Base ◽  
Organic Molecule ◽  
Structural Modification ◽  
Antimicrobial Agents ◽  
Biological Activities ◽  
Molar Conductance ◽  
Molar Conductivity ◽  
Schiff Base Complexes

Structural modification of organic molecule has considerable biological relevance. Further, coordination of a biomolecules to the metal ions significantly alters the effectiveness of the biomolecules. In view of the antimicrobial activity ligand [bis-(2-aminobenzaldehyde)] malonoyl dihydrazone], metal complexes with Cu(II), Ni(II), Zn(II) and oxovanadium(IV) have been synthesized and found to be potential antimicrobial agents. An attempt is also made to correlate the biological activities with geometry of the complexes. The complexes have been characterized by elemental analysis, molar conductance, spectra and cyclicvoltammetric measurements. The structural assessment of the complexes has been carried out based on electronic, infrared and molar conductivity values.

scholarly journals An Update on Oligosaccharides and Their Esters from Traditional Chinese Medicines: Chemical Structures and Biological Activities

2015 ◽  
Vol 2015 ◽  
pp. 1-23 ◽  
Author(s):  
Xiang-Yang Chen ◽  
Ru-Feng Wang ◽  
Bin Liu
Keyword(s):  
Medicinal Plants ◽  
Biological Activities ◽  
Traditional Chinese Medicines ◽  
Chinese Medicines ◽  
Chemical Structures ◽  
Naturally Occurring ◽  
Prevention And Treatment ◽  
Chinese Medicinal Plants

A great number of naturally occurring oligosaccharides and oligosaccharide esters have been isolated from traditional Chinese medicinal plants, which are used widely in Asia and show prominent curative effects in the prevention and treatment of kinds of diseases. Numerousin vitroandin vivoexperiments have revealed that oligosaccharides and their esters exhibited various activities, including antioxidant, antidepressant, cytotoxic, antineoplastic, anti-inflammatory, neuroprotective, cerebral protective, antidiabetic, plant growth-regulatory, and immunopotentiating activities. This review summarizes the investigations on the distribution, chemical structures, and bioactivities of natural oligosaccharides and their esters from traditional Chinese medicines between 2003 and 2013.

Bioactive Flavonoids from Verbenaceae

2020 ◽  
Vol 17 (6) ◽  
pp. 754-766
Author(s):  
Kui-Wu Wang ◽  
Ting-Ting Zhang
Keyword(s):  
Biological Activity ◽  
Biological Activities ◽  
Structural Diversity ◽  
Plant Kingdom ◽  
Anti Oxidant ◽  
Anti Inflammatory

Flavonoids are widely distributed in the plant kingdom and possess a variety of biological activities, such as anti-oxidant, anti-inflammatory, and anti-viral activities. Due to the structural diversity and biological activity, flavonoid derivatives isolated from Verbenaceae family have received a lot of attention by the research scholars. In this paper, a total of 150 natural flavonoids isolated from Verbenaceae and their bioactivities were summarized.

scholarly journals Polysaccharides from Traditional Chinese Medicines: Extraction, Purification, Modification, and Biological Activity

Molecules ◽  
2016 ◽  
Vol 21 (12) ◽  
pp. 1705 ◽  
Author(s):  
Yun Chen ◽  
Fangke Yao ◽  
Ke Ming ◽  
Deyun Wang ◽  
Yuanliang Hu ◽  
...  
Keyword(s):  
Biological Activity ◽  
Traditional Chinese Medicines ◽  
Chinese Medicines
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