1,5-Dihydroxyanthraquinones and an Anthrone from Roots of Rumex Crispus

Abstract

From the roots of Rumex crispus, two known anthraquinones and a new one together with a new anthrone were isolated and the structures of compounds 1 - 4 were elucidated by spectroscopic means. The singlet oxygen generation capacity was tested with 1,3-diphenylisobenzofuran (DPBF) for compounds 1 - 4 .