Phytochemical investigation of aerial parts of Pluchea lanceolata C.B.Clarke

摘要

Six new chemical constituents, a seco-ursane-type triterpene, two sesquiterpenic esters, an alkyl #delta#-lactone, a cyclohexyl substituted alkanoic acid and a sesterterpenic ester have been isolated from the aerial parts of Pluchea lanceolata and their structures were established as 14, 15-seco-urs-18#beta#H-20 (30)-en-3#beta#-yl acetate 1, 4, 8-dimethyldodeca-7Z-en-yl-9'#alpha#, 10'#alpha#-dihydroxy undecan-1'-oate 2, #alpha#-dotriaconta-29, 32-olide 3, 4'#alpha#- (2"-ketobutyl cyclohexyl)-20#alpha#-eincosan-14#alpha#-ol-1-oic acid 4, 5, 9, 13, 17-tetramethyl-18-en-8#alpha#-ol nonadecanoic acid octanyl ester 5 and 3, 7, 11-trimethyl dodeca-10-en-yl-n-hexadecan-9'#alpha#-ol-1'-oate 6 by spectral data analyses and chemical evidences.