A 9,10-DIHYDROPHENANTHRENE DERIVATE FROM EPIMEDIUM-KOREANUM

A new 9,10-dihydrophenanthrene derivative named epimedoicarisoside A was isolated from the aerial parts of Epimedium koreanum along with ten known flavonoids. The structure of this compound was determined on the basis of spectral analysis (FAB-Mass spectrometry, H-1-H-1 COSY, H-1-C-13 COSY, DEFT, and H-1-C-13 long range COSY, etc.) as 2-hydroxy-3,4,6,7-tetramethoxy-9,10-dihydrophenanthrene-2-O-beta-D-glucopyranoside. The known compounds were identified as icariin, epimedoside C, icarisid I, baohuoside I, diphylloside A, baohuoside II, 2''-O-rhamnosylicarisid II, sagittatoside A, hyperoside and icaritin-3-O-rhamnopyranoside.