Three new flavonoid glycosides from the aerial parts of Allium sativum L. and their anti-platelet aggregation assessment.

Three new flavonoid glycosides, Dasuanxinoside F-H (), were isolated from the aerial parts of , together with eight known compounds which were firstly reported in this plant, including three flavonoid glycosides () and five phenylethanoid glycosides (). Their structures were identified by UV-vis, IR, 1D and 2D NMR spectra, as well as HR-ESI-MS analyses. The inhibitory effect of the isolated compounds on platelet aggregation induced by adenosine diphosphate (ADP) was evaluated . The results showed that most compounds displayed different degrees of inhibition. Among them, , , and exhibited the strongest activity on platelet aggregation.