Synthesis and ESR investigation of hypocrellin glycoside
β Scribed by Yu-Ying He; Jing-Yi An; Li-Jin Jiang
- Book ID
- 104259449
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- French
- Weight
- 229 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0040-4039
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## Abstract Our research group is currently exploring the use of hypocrellins as potential photosensitizers for photodynamic therapy (PDT). The purpose of this study is to investigate the synthesis and biodistribution of ^14^Cβlabelled Hypocrellin B. Radiolabelled hypocrellinβB (HB) with the ^14^C
A series of phenanthrenesemiquinone-diphenylthallium complexes were prepared in solution from the corresponding quinones. ESR, ENDOR and TRIPLE spectra provided the proton coupling constants and the unambiguous assignment to distinct molecular positions. The thallium splitting becomes considerably l