摘要
Three new biflavonoids, umcephabiflovin A ( 1 ), umcephabiflovin B ( 2 ), and S -taiwanhomoflavone-B ( 3 ), together with seven known flavonoids ( 4–10 ) and seven known alkaloids ( 11 – 17 ), were isolated from the twigs of Cephalotaxus oliveri Mast. The flavonoids were found to inhibit α-glucosidase activity.
危险品化学品经营许可证（带存储）