Two New Phenolic Glycosides from Hypoxis aurea Lour

摘要

Plants of the genus Hypoxidaceae are widely distributed in Torrid Zone in the world, and previous studies of the genus by our group revealed that it mainly contain phenolic glycosides. Hypoxis aurea Lour, belongs to the genus Hypoxidaceae, called as 'xiao jin mei' to treat hernia and warm kidney in China and mainly distributed over the southern of China, south east of Asia and Japan. Chemical investigation of the rhizomes of H. aurea toward potentially bioactive secondary metabolites from this genus leading to the isolation of two new phenolic glycosides, aureaside A (1) and aureaside B (2), together with seven known compounds, curculigoside I (3), orcinol glucoside (4), curcapital (5), cimifugin prim-O-β-D-glucopyranoside (6), 2-O-β-D-apiofuranosyl (1β6)-O-β-D-glucopyranoside (7), (2R,5S)-bomane-2,5-diol-2-O→-D-glucopyranoside (8), and bornyl 7-O-β-D-apio-D-furanosyl (1→6)-O-β-D-glucopyranoside (9) as shown in Figure 1. Their structures were elucidated on the basis of spectroscopic analysis and comparing spectral data with those known compounds reported in literatures. All these compounds were found in this plant for the first time. In this paper we reported the isolation and structural elucidation of two new compounds from H. aurea Lour.