New steroidal erythrityl triesters from the heat processed roots of Panax ginseng

Two new compounds stigmasta-3α-ol-3α-(2′r,3′s)- butane-1′,2′,3′,4′-tetraolyl-2′,3′-dioctadec-9″/9‴-enoyl-4′- octadec-9′‴,12′‴-dienoate (1) and stigmasta-5-en-3β-ol-3β-(2′r,3′s)-butane-1′,2′,3′,4′-tetraolyl-2′,3′-dioctadec-9 ″/9‴-enoyl-4′-octadec-9 ′,12′-dienoate (2) along with β-sitosterol-β-d-glucoside were isolated and identified from the heat processed roots of panax ginseng. the structures of the new compounds were elucidated by 1d and 2d nmr (cosy,hsqc,and hmbc) spectroscopic techniques aided by fab-ms,esi ft/ms,and ir spectra. © 2013 ill-min chung et al.