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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 25, Number 8
BKCSDE 25(8)
August 20, 2004

Title	Facile Synthesis and Radioiodine Labeling of Hypericin
Author	Sang Wook Kim, Jeong Hoon Park, Seung Dae Yang, Min Goo Hur, Yu-Seok Kim, Jong-Seo Chai, Young Soon Kim, Kook Hyun Yu*
Keywords	Hypericin, 2-[123I]iodohypericin, 2-[124I]iodohypericin, Protein kinase C (PKC) inhibitor, Malignant glioma
Abstract	Hypericin (1,3,4,6,8,13-hexahydroxy-10,11-dimethylphenanthro[1,10,9,8-opqra]perylene-7,14-dione), an antidepressant which is also known to be a potent protein kinase C (PKC) inhibitor was synthesized as a precursor for radioiodine labeling via two step reactions. Malignant glioma cells express higher PKC activity compared to untransformed glial cell. Here we report the synthesis and radioiodine labeling of hypericin as a potential brain tumor imaging radiopharmaceutical. The reference compound, 2-iodohypericin, and its radiolabelled analogues, 2-[123I]iodohypericin and 2-[124I]iodohypericin have been prepared by the reaction of hypericin with NaI or [123I]NaI or [124I]NaI. The labeling yield was 60-65% for each analogue and the optimal reaction time was 10 min. The purification and isolation of the labelled products were achieved by a reversedphase HPLC.
Page	1147 - 1150
Full Text	PDF

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