In order to isolate the active constituents in Chuanlongshuyu,various chromatographic techniques were performed.Five compounds were isolated and identified with IR,NMR and MS data and physical-chemical properties.They were dioscin,protodioscin,trillin methylprotodioscin and gracillin.
A RP-HPLC method had been established for the fingerprint analysis of Dioscorea.The separation was achieved on a Shim-pack VP-ODS column(250 mm×4.6 mm,5μm)using acetonitrile-water as the mobile phase,208 mn as the detectio...