separation of the immunosuppressive principles from rehmanniae radix was done by monitoring hemolytic plaque-forming cells ( hpfc ) inhibitory activity to give two new phenethyl alcohol glycosides : jionosides a ( 1 ) ( 4 ) and b ( 1 ) ( 5 ) , along with six known compounds : acetoside , isoacteoside , purpureaside c , echinacoside , and cistanosides a and f .
C0011389
plaque
C0016327
f