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-beta-sophoroside (3), 3-O-beta-d-(2-O-feruloyl)-glucosyl-7,4'-di-O-beta-d-glucosylkaempferol (4), 3-O-beta-sophorosyl-7-O-beta-d-(2-O-feruloyl)glucosyl kaempferol (5), kaempferol 3,4'-di-O-beta-d-glucoside (6). The identification and structural elucidation of the new compounds were carried out based on spectral data analyses (H-1 and C-13 NMR, H-1-H-1 COSY, HMQC) and HR-MS.