Two new constituents camarolide (1) and lancamaric acid (4) along with two
known compounds oleanonic acid (2) and ursonic acid (3) have been isolated
from the aerial parts of Lantana camara Linn. Structures of the new compoun
ds have been established as 3-keto-urs-11-en-13 beta(28)-olide (1) and 3,25
-epoxy-3 alpha-ethoxy-olean-12-en-28-oic acid (4) through spectral studies
including 1D (H-1-, C-13-NMR) and 2D (COSY-45, NOESY, J-resolved, HMQC and
HMBC) NMR.