Nortriterpenoids from Chukrasia tabularis var. velutina

Five new limonoids, tabularisins E–I (1–5), and a new dinorcycloartane, (24R)-28,29-dinor-cycloartane-3β,24,25-triol (6), together with three known compounds, were isolated from the twigs and leaves of Chukrasia tabularis var. velutina. Their structures were elucidated primarily on the basis of spectroscopic methods.