quercetin-3--o-beta-d-glucopyranoside and hippeastrine

A phytochemical investigation of the bulbs and flowers of Hymenocallis littoralis SALISB., cultivated in Egypt, was carried out, which resulted in the isolation of four alkaloids, lycorine (1), hippeastrine (2), 11-hydroxyvittatine (3), and (+)-8-O-demethylmaritidine (4), and of two flavonoids, quercetin 3'-O-glucoside (5), and rutin (6). The volatile constituents of the plant flowers were analyzed for the first time by GC/MS, which led to the identification of 26 known compounds (Table 1). Finally, the antimicrobial activity of the petroleum ether extract of the flowers of H. littoralis was investigated.

Topics: Amaryllidaceae Alkaloids; Anti-Bacterial Agents; Dose-Response Relationship, Drug; Flavonoids; Flowers; Glucosides; Magnoliopsida; Microbial Sensitivity Tests; Molecular Conformation; Phenanthridines; Plant Roots; Pseudomonas aeruginosa; Quercetin; Rutin; Staphylococcus aureus; Stereoisomerism; Structure-Activity Relationship