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Solvent and catalyst free route to 3-indolyl glycoconjugates: synthesis of sugar tethered isoxazolines and isoxazoles from 3-indolyl nitroalkanes†
R. Senthil Kumar,P. Dheenkumar,Paramasivan T. Perumal
RSC Advances Pub Date : 06/05/2014 00:00:00 , DOI:10.1039/C4RA02825B
Abstract

An expedient, solvent and catalyst free strategy for the synthesis of sugar based bis(indolyl)methanes and indolyl nitroalkanes has been developed. The protocol works well within a wide range of substrates, and tolerates various N/O protecting groups. The sugar tethered nitroalkanes were converted to the corresponding nitrile oxides, and subsequently transformed to novel isoxazolines and isoxazoles by cycloaddition with appropriate dipolarophiles.

Graphical abstract: Solvent and catalyst free route to 3-indolyl glycoconjugates: synthesis of sugar tethered isoxazolines and isoxazoles from 3-indolyl nitroalkanes
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