Flavonol Oligosaccharides from the Seeds of Aesculus hippocastanum

Abstract

Nine flavonol oligosides of quercetin and kaempferol with glucose, xylose, and rhamnose as sugars were isolated from the seeds of Aesculus hippocastanum L. (Hippocastanaceae). Five of them are new compounds (2 trisaccharides, 1 bisdesmoside, a nicotinic and a indolinone hydroxyacetic acid ester of the bisdesmoside). Their structures were elucidated mainly using ¹H- and ¹³C-NMR techniques.

Aesculus hippocastanum L. - Hippocastanaceae - seeds - flavonol oligosides - bisdesmosides - nicotinoyl ester - indolin-2-one-3-hydroxy-3-acetyl ester - ¹³C-NMR - ¹H-NMR