Synthesis and Anti-Tumour Activity Evaluation of Bergenin Derivatives

The traditional uses, phytochemistry, pharmacology and toxicology of Bergenia purparescens: A review comments and suggestions

Bergenia purpurascens (B. purpurascens, Saxifragaceae) has been used to treat several diseases in different countries, such as lung diseases, stomach problems, rheumatic pains, boosting immunity etc. However, the information on phytochemistry, pharmacology and toxicology of this plant has rarely been comprehensively and critically reported. This paper aims to study and evaluate its therapeutic potential, including the traditional uses and all the latest information of phytochemistry, pharmacology and toxicology. The main components of this plant are phenols compounds and the characteristic substance is bergenin.The results about modern pharmacology have shown that its pharmacological effects include antibacterial, antiviral, cough relieving, anti-inflammatory and so on. In addition, it could inhibit diabetic neuropathy, restore insulin secretion, treat cancer, protect liver and prevent Alzheimer's disease (AD). Thus, its therapeutic fields may be cancer, diabetic and AD in the future. The information will help to further update and study pharmacologic effect and action mechanism of this herb, which is more widely, effectively, and safely used in clinic.

Application of triazoles in the structural modification of natural products

Nature products have been extensively used in the discovery and development of new drugs, as the most important source of drugs. The triazole ring is one of main pharmacophore of the nitrogen-containing heterocycles. Thus, a new class of triazole-containing natural product conjugates has been synthesised. These compounds reportedly exert anticancer, anti-inflammatory, antimicrobial, antiparasitic, antiviral, antioxidant, anti-Alzheimer, and enzyme inhibitory effects. This review summarises the research progress of triazole-containing natural product derivatives involved in medicinal chemistry in the past six years. This review provides insights and perspectives that will help scientists in the fields of organic synthesis, medicinal chemistry, phytochemistry, and pharmacology.

Click Chemistry in Natural Product Modification

Click chemistry is perhaps the most powerful synthetic toolbox that can efficiently access the molecular diversity and unique functions of complex natural products up to now. It enables the ready synthesis of diverse sets of natural product derivatives either for the optimization of their drawbacks or for the construction of natural product-like drug screening libraries. This paper showcases the state-of-the-art development of click chemistry in natural product modification and summarizes the pharmacological activities of the active derivatives as well as the mechanism of action. The aim of this paper is to gain a deep understanding of the fruitful achievements and to provide perspectives, trends, and directions regarding further research in natural product medicinal chemistry.