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Synthesis of enantiopure cyclopropyl esters from (−)-levoglucosenone

Synthesis of enantiopure cyclopropyl esters from (−)-levoglucosenone The biorenewable chiral synthon (−)-levoglucosenone has been converted to enantiopure cyclopropyl esters using the base-promoted carbocyclisation of 4,5-epoxyvalerates. This protocol was applied to the enantiospecific synthesis of the GABAc receptor agonist (1R,2R)-trans-2-aminomethylcyclopropanecarboxylic acid ((−)-TAMP) and its enantiomer. The process was also extended to generate 1,1,2- and 1,2,3-trisubstituted cyclopropanes resulting in a formal synthesis of the selective glutamate receptor antagonist PCCG-4. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Organic & Biomolecular Chemistry Royal Society of Chemistry

Synthesis of enantiopure cyclopropyl esters from (−)-levoglucosenone

Royal Society of Chemistry — Aug 3, 2016

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Royal Society of Chemistry
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Abstract

The biorenewable chiral synthon (−)-levoglucosenone has been converted to enantiopure cyclopropyl esters using the base-promoted carbocyclisation of 4,5-epoxyvalerates. This protocol was applied to the enantiospecific synthesis of the GABAc receptor agonist (1R,2R)-trans-2-aminomethylcyclopropanecarboxylic acid ((−)-TAMP) and its enantiomer. The process was also extended to generate 1,1,2- and 1,2,3-trisubstituted cyclopropanes resulting in a formal synthesis of the selective glutamate receptor antagonist PCCG-4.

Journal

Organic & Biomolecular ChemistryRoyal Society of Chemistry

Published: Aug 3, 2016

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