supported by the National Natural Science Foundation of China(No.30470193).
A new biflavonoid, 2,3-dihydro-5,5″,7,7,4′-pentahydroxy-6,6"-dimethyl-[3′-O-4″]-biflavone 1 and two known biflavonoids 2,3"-dihydroochnaflavone 2 and 2″,3″-dihydro-3′,3-biapigenin 3 were isolated from the her...