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Related Experiment Video

Updated: Jul 12, 2026

Evaluation of Antioxidant and Anthelmintic Properties of Tithonia diversifolia Extracts Against Gastrointestinal Nematode Eggs Using In Vitro Assays

Evaluation of Antioxidant and Anthelmintic Properties of Tithonia diversifolia Extracts Against Gastrointestinal Nematode Eggs Using In Vitro Assays

Published on: August 1, 2025

Withanolides from Jaborosa kurtzii.

Natalia S Ramacciotti¹, Viviana E Nicotra

¹Departamento de Química Orgánica and Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciencias Químicas II, Ciudad Universitaria, Córdoba CP 5000, Argentina.

Journal of Natural Products

|August 23, 2007

Summary

Two new withanolides, jaborosalactone 43 and 44, were identified from Jaborosa kurtzii. Jaborosalactone 43 demonstrated selective phytotoxicity against lettuce, indicating potential herbicidal properties.

Related Experiment Videos

Last Updated: Jul 12, 2026

Evaluation of Antioxidant and Anthelmintic Properties of Tithonia diversifolia Extracts Against Gastrointestinal Nematode Eggs Using In Vitro Assays

Evaluation of Antioxidant and Anthelmintic Properties of Tithonia diversifolia Extracts Against Gastrointestinal Nematode Eggs Using In Vitro Assays

Published on: August 1, 2025

Area of Science:

Phytochemistry
Natural Products Chemistry
Plant Biochemistry

Background:

Jaborosa kurtzii is a plant species known for its potential chemical constituents.
Withanolides are a class of steroidal lactones with diverse biological activities.
Understanding the chemical diversity of plant secondary metabolites is crucial for discovering new bioactive compounds.

Purpose of the Study:

To isolate and characterize novel withanolides from the aerial parts of Jaborosa kurtzii.
To investigate the potential phytotoxic effects of the isolated compounds.

Main Methods:

Isolation of compounds using chromatographic techniques.
Structure elucidation through comprehensive spectroscopic methods (NMR, MS).
Bioassay for phytotoxicity against Lactuca sativa.

Main Results:

Two new withanolides, jaborosalactone 43 (1) and jaborosalactone 44 (2), were identified.
Jaborosalactone 44 (2) is a 12-oxowithanolide and a potential biosynthetic precursor to jaborosalactone 43 (1).
Jaborosalactone 43 (1) exhibited selective phytotoxicity against Lactuca sativa (lettuce).

Conclusions:

The study successfully identified two new withanolides from Jaborosa kurtzii.
The phytotoxic activity of jaborosalactone 43 suggests its potential application in weed management.
Further research into the biosynthetic pathways and broader biological activities of these compounds is warranted.