Two new phenylpropane glycosides from Allium tuberosum Rottler.

A phytochemical investigation of Allium tuberosum Rottler afforded two new phenylpropane glycosides, named tuberonoid A (1) and B (2), along with four known flavonoids, kaempferol 3-O-β-sophoroside (3), 3-O-β-D-(2-O-feruloyl)-glucosyl-7,4'-di-O-β-D-glucosylkaempferol (4), 3-O-β-sophorosyl-7-O-β-D-(2-O-feruloyl)glucosyl kaempferol (5), kaempferol 3,4'-di-O-β-D-glucoside (6). The identification and structural elucidation of the new compounds were carried out based on spectral data analyses ((1)H and (13)C NMR, (1)H-(1)H COSY, HMQC) and HR-MS.