Objective: To study the chemical constituents of Dioscorea bulbifera.
Method: Column chromatography with silica gel was employed for the isolation and purification of constituents. The structures were elucidated by UV, IR, MS, 1H NMR and 13C NMR analyses.
Result: Three compounds were obtained and elucidated as 3,7-dimethoxy-5,4'-dihydroxyflavone; 3,7-dimethoxy-5,3',4'-trihydroxyflavone and emodin.
Conclusion: These compounds were separated from D. bulbifera for the first time.