A model for light-triggered porphyrin anticancer prodrug 1 was designed and synthesized. Upon photolysis, prodrug 1 can efficiently liberate the anticancer drug tegafur. The MTT assay demonstrates that prodrug 1 is significantly less toxic than its parent drug tegafur, and 1 can release tegafur upon photoactivation in vitro. The light-triggered porphyrin anti-

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A dibutylstannylene acetal in the presence of CsF efficiently cleaves both aromatic and aliphatic acetates in a short time to give the deprotected alcohols in good to excellent yields. The cyclic stannane is prepared in situ. A non-radical transesterification mechanism via a highly reactive fluoride-generated tin-based alkoxide is assumed. -(LIN*, W.; LONG, L.; PENG, D.; GUO, C.; J.