Photoinduced color change of natural dyhydroxyanthraquinones solutions isolated from Heterophyllaes lycioides

J. DIMMER; L. R. COMINI; F. E. MORAN VIEYRA; R.A. MIGNONE; J. L. CABRERA; S. C. NÚÑEZ MONTOYA; C.D. BORSARELLI

Villa Carlos Paz

Congreso; XIII ENCUENTRO LATINOAMERICANO DE FOTOQUIMICA Y FOTOBIOLOGIA; 2017

UNSE-UNLP-UNC

Chemical study of H. lycioides allowed the isolation of seven anthraquinones, three of them reported as a novel for this family of compounds [1]. It was demonstrated that five of them: soranjidiol (sor), 5-chlorosoranjidiol (5-clsor), bisoranjidiol (bis), lycionine (lyc) and 7-chlorobisoranjidiol (7-clbis) (Fig. 1) are potential photosensitizers compounds to be applied in Photodynamic Therapy (PDT) [1,2]. Nevertheless, photoinduced color changes (either by degradation or molecular rearrangements) of photosensitizer solutions is one of the critical requirements necessary for efficient PDT. Hence, in this report, we compare the UV-Vis spectral changes of the following natural monomeric and dimeric dihydroxyanthraquinones compounds DHAQs