Four new compounds isolated from the rhizomes of (L.) 't Hart.

One new coumarin, one new flavonoid, two new distinctive compounds with characteristics of an iriflophene unit and a flavonoid unit connecting a furan ring, together with five known compounds were isolated from the rhizomes of (L.) 't Hart. Their structures were elucidated on the basis of spectroscopic analysis. Compounds , and increased the survival rate of H9c2 cells induced by doxorubicin , which was capable of further drug exploration.