Steroidal Saponins from the Seeds of Trigonella Hamosa L

Abstract

Two new furostane saponins named hamoside A and B were isolated from the 80% ethanolic extract of the defatted seeds of Trigonella hamosa L. On the basis of chemical evidence and spectral analysis (IR, ¹H NMR, ¹³C NMR, HSQC, HMBC and positive ion MS), hamoside A (1) was established as (22ξ)-2α, 3β, 26-triol-3-O-β-D-galactopyranosyl-(1→4)-O-β-D-glucopyranosyl-(1→2)-O-α-rhamnopyranosyl-(1→4)-O-β-D-xylopyranoside-furost-5-ene, and hamoside B (2) as (22ξ)-2α, 3β, 26-triol-3-O-β-D-galactopyranosyl-(1→4)-O-β-D-glucopyranosyl-(1→4)-O-β-D-xylopyranoside-furost-5-ene.