Abstract
A new lignan glucoside named nortracheloside (IV), C26H32O12·H2O, mp 95-100°, was isolated from the stems of Trachelospermum asiaticum NAKAI var. intermedium NAKAI (Apocynaceae). The lignan derivatives were prepared from tracheloside (III) and nortracheloside (IV). From the discussion of mass spectra of the lignan derivatives, the structures of III and IV were established as 8(S), 8'(S)-4', 8'-dihydroxy-3, 4, 3'-trimethoxy-lignan-olid(9, 9')4'-β-D-glucopyranoside and 8(S), 8'(S)-4, 4', 8'-trihydroxy-3, 3'-dimethoxy-lignan-olid(9, 9')4'-β-D-glucopyranoside, respectively.
