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Synthesis and biodistribution of 14C-radiolabelled hypocrellin B

✍ Scribed by Jixiang Liu; Gerald G. Miller; Liren Huang; Zhenjun Diwu; J. William Lown; Kevin Brown; Ronald B. Moore; John Tulip; Malcolm S. McPhee


Publisher
John Wiley and Sons
Year
1995
Tongue
French
Weight
395 KB
Volume
36
Category
Article
ISSN
0022-2135

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✦ Synopsis


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^C‐labelled Hypocrellin B. Radiolabelled hypocrellin‐B (HB) with the ^14^C atom incorporated in either or both the 4‐ and 13‐methoxy groups was synthesized with a specific activity of 2.11 mCi per mmol. The purified, ^14^C‐HB, prototype photodynamic therapy photosensitizer was used to determine the kinetics of uptake in EMT6/Ed cells in monolayer culture, and the kinetics of tumor and tissue distribution in Balb/c mice bearing the EMT6/Ed tumor.


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