New tetracyclic 1,4-oxazepines constructed via practically simple tandem condensation strategy from readily available synthons
Autor: | Stanislav Kalinin, Alexey V. Smirnov, Mikhail V. Dorogov, Alexander Sapegin, Mikhail Krasavin |
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Rok vydání: | 2014 |
Předmět: | |
Zdroj: | Tetrahedron. 70:1077-1083 |
ISSN: | 0040-4020 |
DOI: | 10.1016/j.tet.2013.12.026 |
Popis: | A streamlined synthetic methodology towards novel tetracyclic 1,4-oxazepines from readily available precursors is described. The compounds, designed as more soluble version of the earlier described, poorly soluble dibenzo[b,f][1,4]oxazepines, were obtained in high yields and as a single regioisomer as a result of three tandem chemical events—nucleophilic aromatic substitution, Smiles rearrangement and denitrocyclization. |
Databáze: | OpenAIRE |
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