Regio- and stereoselective synthesis of spirooxindole 1'-nitro pyrrolizidines with five concurrent stereocenters under aqueous medium and their bioprospection using the zebrafish (Danio rerio) embryo model.

Abstract excerpt

A highly regio- and stereoselective method has been developed and expanded for the synthesis of a 20-membered library of spirooxindole 1'-nitro pyrrolizidines via 1,3-dipolar cycloaddition of azomethine ylides, generated in situ by a decarboxylative route from a common set of diverse isatins and L-proline derivatives, with substituted β-nitrostyrenes under aqueous medium. Among various reaction conditions, water...

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