20-Deoxy-20-fluorocamptothecin: Design and Synthesis of Camptothecin Isostere
- 20 October 2004
- journal article
- letter
- Published by Georg Thieme Verlag KG in Synlett
- Vol. 2004 (14) , 2509-2512
- https://doi.org/10.1055/s-2004-834810
Abstract
20-Deoxy-20-fluorocamptothecin (2) has been synthesized as an isosteric analogue of camptothecin (1). The use of selectfluor or N-fluorobenzenesulfonimide for the electrophilic fluorination of 20-deoxycamptothecin (3) yields the target compound. Enantioselective fluorination of 3 was also achieved using our previously described cinchona alkaloids/selectfluor combination to provide both enantiomers of 2 with 88% ee and 81% ee, respectively.Keywords
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