苦碟子中的新倍半萜内酯

A new compound,3 hydroxy 1(10),3 guaiadiene 12,6 olide 2 one,was isolated from Ixeris sonchifolia (Bge.)Hance.This compound was identified by 1H NMR, 13 C NMR, 1H 1HCOSY,HMQC,HMBC,EI MS.