Dihydrobenzofurans and Propynylthiophenes From the Roots of Eupatorium heterophyllum

Seven new dihydrobenzofurans and 2 propynyl thiophenes were isolated from the roots of Eupatorium heterophyllum together with 13 known compounds. The compounds characterized using spectroscopic methods including 2D NMR, infrared, mass spectrometric techniques. Aerial parts this plant have been to contain various sesquiterpenoids displayed high chemical diversity (several and/or identified) among their constituents depending on collection site. Nevertheless, we found that in was lower than aerial parts.