9,12-Dibenzothiazolylhypericin and 10,11-Dibenzothiazolyl-10,11-didemethylhypericin: Photochemical Properties of Hypericin Derivatives Depending on the Substitution Site |
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| Authors: | Mario Waser Yulita Popova Christian W Klampfl and Heinz Falk |
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| Institution: | (1) Department of Chemistry, Bar-Ilan University, Ramat Gan, Israel;(2) Institute for Physical and Theoretical Chemistry, University of Technology, Graz, Austria;(3) Faculty of Agriculture, The Hebrew University of Jerusalem, POB 12, 76100 Rehovot, Israel;(4) Department of Organic Chemistry, Weizmann Institute of Science, 76100 Rehovot, Israel; |
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| Abstract: | Investigating the properties of similar but regioselectively differently substituted hypericin derivatives, 9,12-dibenzothiazolylhypericin
was synthesized and compared with the recently prepared 10,11-analogue. A significant difference in the ability to generate
singlet oxygen and/or reactive oxygen species and different absorption spectra of these two derivatives were observed. |
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