Chemical constituents from the Jasminum lanceolarium Roxb.

Twelve compounds (1-12) are isolated from Jasminum lanceolarium Roxb. Among them, compounds 5, 7, 8, 11 and 12 are reported here for the first time from J. lanceolarium, and compounds 6, 9, 10 are firstly isolated from Jasminum genus. The existence of iridoids and lignanoids might be regarded as valuable chemotaxonomic markers for further classification and subdivision of the genus of Jasminum.