Chemical constituents of Rheum ribes L.

Chemical investigation of the dichloromethane extract of Rheum ribes has led to the isolation of β-sitosteryl-3β-glucopyranoside-6'-O-fatty acid esters (1), β-sitosterol (2), phytyl fatty acid esters (3), triacylglycerols (4) and chlorophyllide a (5). The structures of 1-5 were identified by comparison of their NMR data with literature data.