Objective: To seperate and identify the chemicals from the antitumor fraction of Cordyceps taii mycelia powder.Methods: The mycelia of Cordyceps taii were prepared by the submerged fermentation technique.Chemical entities in the antitumor fraction of Cordyceps taii were isolated and purified by using different column chromatographies(silica gel,Sephadex LH-20 and MCI),and semi-preparative HPLC method.Theirs chemical structures were then identified by different spectrum techniques such as EI,ESI and 1D /2D-N...