Allenyloxime—a new source of heterocyclizations to stable cyclic nitrones
摘要:
A variety of conditions including reductive and/or basic reagents in aqueous or alcoholic solution was applied to 2,2-dimethylpenta-3,4-dienal oxime. Formation of various five-membered heterocycles with excellent chemical selectivity was observed. Most of the reactions yielded cyclic nitrones with stable dipolar structure and unique functionalities present. All products of cyclization were isolated and fully characterized. (C) 2008 Elsevier Ltd. All rights reserved.
A new approach to five-membered cyclicnitrones connected with the incorporation of a planar aromatic ring system into the structure is described. This procedure is based on an allenyloxime one-pot domino transformation under simple base catalysis in alcoholic and aqueous solvents. The structure of obtained nitrones was studied by X-ray analysis and the reactivity of products in 1,3-dipolar cycloadditions
Novel approach to functionalized polycyclic aromatic hydrocarbons (PAHs) is presented. Incorporation of cyclic nitrone framework into the structure of PAHs was studied with respect to their anti-proliferative activities and interaction with double stranded DNA. Theoretical docking studies and UV titration methods were used for preliminary evaluation of binding of new PAH derivatives to DNA structure. (C) 2013 Elsevier Ltd. All rights reserved.