Morinlongosides A–C, Two New Naphthalene Glycoside and a New Iridoid Glycoside from the Roots of Morinda longissima

Abstract

Two new naphthalene glycosides, morinlongosides A and B (1, 2) and a new iridoid glycoside, morinlongoside C (3), together with four known ones, geniposidic acid (4), (3R)-3-O-[β-D-xylopyranosyl-(1→6)-β-D-glucopyranosyl]-l-octen-3-ol (5), lucidin-3-O-β-primeveroside (6), and morindone-6-O-β-gentiobioside (7), were isolated from the roots of Morinda longissima Y. Z. RUAN. The structures of all isolated compounds (1–7) were elucidated on the basis of spectroscopic data (high resolution (HR)-MS, one and two dimensional (1/2D)-NMR).