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- W2080742761 abstract "Thiol- or acid-promoted additions of silyl radicals to camptothecin are reported. At 105 degrees C, mixtures of 7-silyl (favored) and 12-silyl camptothecins are formed alongside substantial amounts of recovered camptothecin. At 160 degrees C, 12-silyl isomers are formed preferentially, but the total mass balance is substantially reduced. The silyl radical addition is featured in short semi-syntheses of DB-67 (7-tert-butyldimethylsilyl-10-hydroxy camptothecin) from both camptothecin and 10-hydroxycamptothecin." @default.
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- W2080742761 date "2003-02-06" @default.
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- W2080742761 title "Semisynthesis of DB-67 and other silatecans from camptothecin by thiol-promoted addition of silyl radicals" @default.
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- W2080742761 doi "https://doi.org/10.1016/s0968-0896(02)00437-6" @default.
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