Esters of new oleanane-type triterpenoid saponins from Schefflera kwangsiensis

Two new penterpenoid saponins and a new diterpenoid glycoside from Hemsleya chinensis

“…On the basis of the comparison their chemical shift values with literature data, one glucuropyranosyl (GlcUA), one arabinopyranosyl (Ara), and two glucopyranosyl (Glc) units were identified (Kasai et al, 1990;Noté et al, 2013). The anomeric protons of glucuropyranosyl, arabinopyranosyl, glucopyranosyl (Glc-1), glucopyranosyl (Glc-2) were deduced to have the b-orientation, b-orientation, b-orientation (Glc-1), b-orientation (Glc-2) based on their relatively large 3 J H-1,H-2 values of 8.0 Hz, 7.0 Hz, 8.1 Hz, 7.8 Hz, respectively (Noté et al, 2013;Phat et al, 2015;Tene et al, 2011;Wang et al, 2015).…”