Flavonol Glycosides from Leaves of Allium microdictyon

The composition of flavonoids from leaves of Allium microdictyon Prokh. (Amaryllidaceae) was studied for the first time and included 14 compounds including two new flavonol glycosides 1 and 2. UV, IR, and NMR spectroscopic and mass spectrometric data determined that 1 was quercetin-3-O-(2 '' -O-alpha-Lrhamnopyranosyl)-beta-D-glucopyranoside-7-O-beta-D-glucuronopyranoside (quercetin-3-O-neohesperidoside-7-O-glucuronide). Compound 2 had the structure kaempferol-3-O-(2 ''-O-alpha-L-rhamnopyranosyl)-beta-Dglucopyranoside-7-O-beta-D-glucuronopyranoside (kaempferol-3-O-neohesperidoside-7-O-glucuronide).