To comprehensively develop and utilize Camellia semiser- rata resources, compounds of ethanol extract of Camellia semise- rrata Chi. cake were separated and identified. Five purified compounds were achieved by HPLC preparation from 4 fractions in- cluding XVII, XXVI, XXVIII and XXXIV by ethyl acetate extraction and silica gel column chromatography. The analysis of compound 4 has been reported in another paper, Four compounds were identified as protocatecholc acid ( 1 ), apigenin-6 C-β-D-gluco-pyranoside ( 2 ), kaempferol-3-O-[α-L-rhamnopy...