TETRAHYDROISOQUINOLINE-MONOTERPENE GLUCOSIDES FROM ALANGIUM-LAMARCKIIAND CEPHAELIS-IPECACUANHA

From the dried fruits of Alangium lamarckii, a novel tetrahydroisoquin oline-monoterpene glucoside, 3-O-demethyl-2-O-methylalangiside, was is olated along with alangiside. Re-examination of the constituents of th e roots of Cephaelis ipecacuanha led to the isolation and identificati on of this same compound, as well as alangiside and that of another ne w glucoside, 7-O-methylipecoside. The structures of these two new gluc osides were determined by spectroscopic and chemical means.