Two New Saponins from Zygophyllum atriplicoides

Abstract

Phytochemicals investigation of the whole plant of Zygophyllum atriplicoides resulted in the isolation of two new triterpenoidal saponins together with a known compound. The structure of the new compounds atriplicosaponin A (1) and atriplicosaponin B (2) were established as 3-O-[α-D-glucopyranosyl-(1→2)-β-D-xylopyranosyl]hederagenin and 27α-hydroxyurs-12-ene-3-O-[β-D-glucopyranosyl(1→4)(2-O-sulpho)-β-D-quinovopyranoside] and known compound was identified as 3-O-[β-D-glucopyranosyl]-β-sitosterol. The structure elucidations of the compounds were based primarily on 1D and 2D-NMR analysis, including COSY, HMBC and HMQC correlations.