Abstract: | 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 herb of Selaginella labordei Hieron. ex Christ. Their structures were elucidated by spectroscopic methods. |