ArticleRSC advances2024
Efficient convergent synthesis of 1,3-diazepinone nucleosides by ring-closing metathesis and direct glycosylation.
Article in RSC advances, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
A new and highly efficient ring-closing metathesis-based strategy was developed for the synthesis of the cyclic urea 1,3-diazepinone, presenting significant improvement upon previous methods. Using a direct glycosylation approach, analogues of the potent cytidine deaminase (CDA) inhibitor diazepinone riboside were then synthesized including 2'-deoxyribo-, 2'-deoxy-2'-fluoroarabino-, and 2'-deoxy-2',2'-difluoro-diazepinone nucleosides, all with moderate to good yield and excellent anomeric selectivity. Crucially, in contrast to the previous multistep linear synthesis of 2'-deoxyribo- and 2'-deoxy-2'-fluoroarabino-diazepinone nucleosides, this is the first report of direct glycosylation to access these nucleosides. Overall, we report efficient convergent routes to multiple 2'-modified-diazepinone nucleosides for further evaluation as CDA and potential APOBEC3 inhibitors.
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