This work describes the isolation and structural identification of six triterpenes (a-amyrin acetate, cycloartenone,3²,19±,23-trihydroxyurs-12-ene,andursolic,3-²-O-²-D-glucopyranosylquinovic, 3²,6²,19±,23-tetrahydroxyurs-12-en-28-oic acids), beside a phytosteroid (sitostenone) from leaves, stem barks and stems of Guettarda grazielae (Rubiaceae). All isolated compounds, except 3-²-O-²-D-glucopyranosylquinovic acid, are being described for the first time in the genus Guettarda and were identified on basis of the spectral NMR data, including APT and DEPT, as well as by comparison with data of the literature.
Guettarda grazielae; Rubiaceae; triterpenes
