Allose gallates from Euphorbia fischeriana

Abstract A chemical investigation of the roots of Euphorbia fischeriana has led to the isolation of three novel gallotannins, 1,3,6-tri- O -, 1,2,6-tri- O - and 1,2,3,6-tetra- O -galloyl-β- d -allopyranoses, together with ellagitannins (corilagin, sanguiin H-5 and tercatain) and 3,4,6-tri- O -galloyl- d -glucose. The structures of these compounds were established from spectroscopic and chemical evidence.