Five novel tetrahydroisoquinoline-monoterpene glycosides, 6'-O-β-D-glucopyranosylalangiside, 3'-O-β-D-glucopyranosylalangiside, 6'-O-α-D-glucopyranosylalangiside, 6'-O-α-D-glucopyranosyl-3-O-demethyl-2-O-methylalangiside and 6'-O-α-D-xylopyranosylalangiside, were isolated from dried fruits of Alangium lamarckii. The structures of these new compounds were determined by spectroscopic means. © 1997 Elsevier Science Ltd