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New Ecdysteroids from Serratula tinctoria.

D Rudel¹, M Bathori, J Gharbi

¹Ecole Normale Supérieure, Département de Biologie, Laboratoire de Biochimie et Physiologie du Développement, CNRS URA 686, 46 rue d'Ulm, F-75230 Paris Cedex 05, France.

|August 1, 1992

Summary

Six new ecdysteroids were identified in Serratula tinctoria, alongside known compounds. This discovery expands the known diversity of ecdysteroids in this plant species.

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Area of Science:

Phytochemistry
Natural Products Chemistry
Endocrinology

Background:

Ecdysteroids are insect molting hormones with potential pharmaceutical applications.
Serratula tinctoria is a plant species known to contain various bioactive compounds.

Purpose of the Study:

To isolate and identify novel ecdysteroids from Serratula tinctoria.
To characterize the ecdysteroid profile of this plant.

Main Methods:

Isolation using multiple chromatographic techniques including liquid chromatography on alumina, DCCC, and HPLC.
Identification via mass spectrometry and 2D (1)H-NMR spectroscopy.

Main Results:

Six new ecdysteroids were discovered: 2,22- and 3,22-diacetates of 20-hydroxyecdysone, 5beta-hydroxyrubrosterone, 3-epi-poststerone, 3-epi-rubrosterone, and 22-oxo-20-hydroxyecdysone.

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These were found with 11 known ecdysteroids, including 20-hydroxyecdysone and its derivatives.

Conclusions:

Serratula tinctoria is a rich source of diverse ecdysteroids.
The identified compounds contribute to the understanding of plant-derived steroid chemistry.