Abstract A chemical examination of Chinese rhubarb has led to the isolation of two new chromone glucosides. On the basis of chemical and spectroscopic evidence, their structures were established as aloesone 7- O -β- d -glucopyranoside and 2-methyl-5-(2′-oxo-4′-hydroxypentyl)-7-hydroxychromone 7- O -β- d -glucopyranoside.