Secondary Metabolites from Chromolaena sinuata var. viscigerum

Abstract

Two new labdane-type diterpenoids (1, 2) have been isolated from the aerial parts of Chromolaena sinuata var. viscigerum (Asteraceae), along with six other known secondary metabolites. The new structures were elucidated using spectroscopic and spectrometric data analyses, including 1D and 2D NMR, and by comparison with known spectral data.