Abstract: From the dried roots of the Chinese drug " Zhong-dian Qian-hu" (Peuce-danum sp., Umbelliferae) , a new coumarin d-laserpitin (1), together with four known coumarins silinidin (2), pteryxin (3), bergapten (4), ammijin (5), as well as (3-sitosterol have been isolated. On the basis of spectroscopic data, the structure of the new coumarin d-laserpitin (1) has been elucidated as 3'(S)-hydroxy -4' (S) -angeloyoxy-dihydroseseHn.

Key words: Peucedanum sp.