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Updated: Mar 31, 2026

Screening and Isolation of C-Glycoside-Cleaving Intestinal Bacteria
Published on: February 28, 2025
ent-Kaurene Glycosides from Ageratina cylindrica
Celia Bustos-Brito1, Mariano Sánchez-Castellanos1, Baldomero Esquivel1
1Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria , México, D.F. 04510, México.
Abstract:
The aqueous extract of the leaves of Ageratina cylindrica afforded six new ent-kaurenoic acid glycosides together with the known diterpenoid paniculoside V, the flavonoid astragalin, chlorogenic acid, and L-chiro-inositol. The structures were elucidated mainly by NMR and MS methods, and the absolute configuration was established by vibrational circular dichroism spectroscopy. The new compounds showed moderate antiprotozoal activity against Entamoeba histolytica and Giardia lamblia trophozoites.
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