Bioactive Glycosides in Medicinal Plants

Bioactive glycosides are a diverse class of natural products in which a sugar moiety is covalently linked to a non‐sugar aglycone. They are ubiquitous in medicinal plants and contribute to a wide spectrum of therapeutic activities, including cardiotonic, anti‐inflammatory, antioxidant and metabolic regulatory effects. The structural diversity arises from variation in sugar identity, linkage position and the nature of the aglycone core, which may be a steroid, flavonoid, terpenoid or phenolic compound. Biosynthesis is catalysed by glycosyltransferases, enzymes that transfer activated sugar donors to acceptor molecules, thereby modulating solubility, stability and bioavailability. Ethnobotanical traditions worldwide have long harnessed glycoside‐rich extracts for treatment of heart disease, diabetes and infectious conditions. Modern analytical techniques such as high‐performance liquid chromatography coupled with mass spectrometry have greatly expanded the catalogue of plant glycosides, enabling structure–activity studies and the identification of lead compounds for drug development. Recent advances have also begun to unravel the genetic and enzymatic networks governing glycoside assembly, offering routes to enhanced production through metabolic engineering.

Research from Nature Portfolio

Recent studies have employed comprehensive metabolomic profiling to elucidate glycoside accumulation during root development of a key medicinal herb. Untargeted liquid chromatography–mass spectrometry analysis revealed over 400 distinct metabolites, including numerous glycosides with stage‐specific expression patterns. Mapping these compounds onto metabolic pathways identified clusters of glycosylated flavonoids and phenylethanoid glycosides that increase during maturation. Network analysis highlighted candidate glycosyltransferases and associated enzymatic cascades responsible for the final assembly of complex glycosides. These findings provide a systems‐level view of how medicinal plants regulate glycoside biosynthesis in relation to developmental cues and quality control metrics for herbal preparations.

Bioactive Glycosides in Medicinal Plants publication trend

The graph below shows the total number of articles in bioactive glycosides in medicinal plants across all publications each year (not limited to Nature Index journals).

Technical terms

Glycoside: A molecule in which a sugar is bonded to a non‐sugar aglycone, influencing its solubility and bioactivity.

Aglycone: The non‐sugar component of a glycoside that often determines pharmacological activity.

Glycosyltransferase: An enzyme that transfers activated sugars to aglycones, forming glycosidic bonds.

LC-MS: Liquid chromatography–mass spectrometry, an analytical technique for separating and identifying small molecules in complex mixtures.

AMPK: AMP-activated protein kinase, a cellular energy sensor that regulates metabolic pathways and is a target for antidiabetic therapies.

References

1. Identification of Bioactive Compounds from the Roots of Rehmannia glutinosa and Their In Silico and In Vitro AMPK Activation Potential. Molecules (2024).
2. Metabolite accumulation and metabolic network in developing roots of Rehmannia glutinosa reveals its root developmental mechanism and quality. Scientific Reports (2018).
3. A New Ionone Glycoside and Three New Rhemaneolignans from the Roots of Rehmannia glutinosa. Molecules (2015).