ISSN 2169-303X
International Journal of Medicinal Plants Research ISSN 2169-303X Vol. 15 (1), pp. 001-005, January, 2026. Available online at www.internationalscholarsjournals.org © International Scholars Journals
Full Length Research Paper
Ceratoside: A Novel Acylated Flavonol Glycoside Isolated from Ceratonia siliqua Seeds
A. Gohar*, S. R. Gedara and H. N. Baraka
Pharmacognosy Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.
Accepted 7 September, 2025
New flavonol glycoside, 4`-p-hydroxybenzoylisorhamnetin-3-O-a-L-rhamnopyranoside named cerato- side (5), together with the known kaempferol-3-O-a-L-rhamnopyranoside (afzelin) (3), quercetin-3-O-a-L- arabinofuranoside (auriculain) (4) quercetin-3-O-a-L-rhamnopyranoside (6), β-sitosterol (1) and β- sitosterol-3-O-b-D-glucoside (2) were isolated for the first time from Ceratonia siliqua L. seeds. The identity of these compounds was established through UV, IR, MS and NMR spectral data. The antioxidant activity of the organic solvent fractions together with some isolated compounds were carried out and showed significant results.
Key words: Ceratonia siliqua, carob, flavonol glycosides, antioxidants