Triterpene acids from Toddalia asiatica

Four new triterpene acids,2#alpha#,3#alpha#, 19#alpha#-trihydroxy-11-oxo-urs-12-en-28-oic acid(1) ,2#alpha#,3#alpha#, 11#alpha#, 19#alpha#-tetrahydroxy-urs12-en-28-oic acid(2), 2#alpha#, 3#alpha#-dihydroxy-19-oxo-18, 19-seco-urs-11, 13 ( 18)-dien-28-oic acid(3) and 2#alpha#, 3#beta#, 19#alpha#-trihydroxyolean-11, 13( 18)-dien-28-olic acid(4)were isolated from the stem of Toddalia asiatica, along with the known compounds euscaphic acid (5), arjunic acid(6), toddaculin, toddalolactone and #beta#-sitosterol. Their structures were elucidated on the basis of spectral evidence.