Two new neolignan glycosides from Pteris multifida Poir

Abstract

Two new neolignan glycosides, named as multifidoside A 1 and B 2, together with four known compounds have been isolated from the roots of Pteris multifida Poir. The structures of multifidoside A and B have been characterized by spectroscopic and chemical means as (7S, 8S)-Δ^7′-2,9′-dihydroxy-5′-methoxy-7,3′-dioxy-8,4′-neolignan-4-O-β-D-apiofuranosyl-(1→6)-β-D-gluco¬pyranoside and (7S, 8S)-Δ^7′-2,9,9′-trihydroxy-7,3′-dioxy-8,4′-neolignan-4-O-β-D-apiofuranosyl-(1→6)-β-D-glucopyranoside. The known compounds are identified by comparing their spectral data with those of authentic samples or data reported in the literature.