Articles with "oxindole bis" as a keyword



Regio- and stereoselective synthesis of spiropyrrolidine-oxindole and bis-spiropyrrolizidine-oxindole grafted macrocycles through [3 + 2] cycloaddition of azomethine ylides

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Published in 2020 at "RSC Advances"

DOI: 10.1039/c9ra10463a

Abstract: A convenient and efficient method for the regioselective macrocyclization of triazole bridged spiropyrrolidine-oxindole, and bis-spiropyrrolizidine-oxindole derivatives was accomplished through intra and self-intermolecular [3 + 2] cycloaddition of azomethine ylides. The chalcone isatin precursors 9a–i required… read more here.

Keywords: oxindole; spiropyrrolidine oxindole; spiropyrrolizidine oxindole; cycloaddition azomethine ... See more keywords