New secoiridoid glucosides from Jasminum lanceolarium.

Two new secoiridoid glucosides, the trans-P-coumaroyl and trans-feruloyl esters of 10-hydroxyoleoside, jaslanceosides A (2) and B (3), were isolated from the leaves and stems of Jasminum lanceolarium (Oleaceae) in addition to jasminoside (1) and 10-hydroxyoleoside dimethyl ester (8). The structures of these compounds have been elucidated on the basis of spectral and chemical methods.