A novel triterpene, 9,19-cyclolanost-20(21)-en-24-ol-3-one, named neri
ifolione, and cycloartenol were isolated from the latex of Euphorbia n
eriifolia. Their structures were elucidated with the help of chemical
and physical data (H-1 NMR, C-13 NMR, IR and-mass spectra). (C) 1998 E
lsevier Science Ltd. All rights reserved.