NATURAL PRODUCT LETTERS, vol.16, no.1, pp.65-70, 2002 (SCI-Expanded)
From the roots of Ruinex 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.