Age-related osteoblast dysfunction is the main cause of age-related bone loss in both men and women. In the present study, the effect of sciadopitysin, a type of biflavonoids, on osteoblast function was investigated in osteoblastic MC3T3-E1 cells. Sciadopitysin caused a significant elevation of
Six amentoflavone-type biflavonoids, bilobetin (1), ginkgetin (2), 4',7''-di-O-methyl-amentoflavone (3), 7-O-methyl-isoginkgetin (4), sciadopitysin (5), and 7,4',7'',4'''-O-methyl-amentoflavone (6), were isolated from the EtOAc fraction of Cephalotaxus koreana Nakai (Cephalotaxaceae) by