Abstract
We have attached the antiviral drug acyclovir (ACV) to a xanthone photolabile protecting group (or photocage) through the O6 position of acyclovir, a procedure designed for the treatment of ocular herpes simplex virus infections. Acyclovir is photoreleased from the photocage, under physiological conditions, with a quantum yield (ΦACV release) of 0.1–0.3 and an uncaging cross section (Φ·ε) of 450–1350 M cm-1. We demonstrate that this photorelease method outcompetes alternative reaction pathways, such as protonation. Furthermore, complete release of the drug is theoretically possible given a sufficient dose of light. Surprisingly the acyclovir photocage, also showed some antiviral activity towards HSV-1.
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Blake, J.A., Bareiss, B., Jimenez, L. et al. Design of xanthone propionate photolabile protecting group releasing acyclovir for the treatment of ocular herpes simplex virus. Photochem Photobiol Sci 11, 539–547 (2012). https://doi.org/10.1039/c2pp05311j
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DOI: https://doi.org/10.1039/c2pp05311j