A New Cerebroside from the Roots of Gynura procumbens

new cerebroside ( 1 ), along with three known steroidal compounds, β -sitosterol ( 2 ), daucosterol ( 3 ), and stigmasterol ( 4 ), were isolated from the roots of Gynura procumbens (Lour.) Merr. The structure of 1 was determined to be 1- O - β -D-glucopyranosyl-(2 R ,6 E ,9 R ,12 E )2-[(2′ R )-2′-hydroxypentacosaneoyl-amino]-6,12-heptadecene-1,9-diol on the basis of chemical and spectroscopic evidence.