Syntheses of Carbamate Derivatives of Quercetin by Reaction with Amino Acid Ester Isocyanates

X.      Wu; L.      Cheng; D.      Xiang; Y.      Wei

doi:10.2174/1570178054640796

Abstract

Synthesis of amino acid carbamate derivatives of quercetin from partly protected quercetin and amino acid esters utilizing triphosgene as an auxiliary reagent was studied. A series of quercetin derivatives were obtained regioselectively by reaction with amino acid ester isocyanates under mild conditions and in high yields.

Keywords: quercetin, flavonoid, tirphosgene, carbamate, isocyanate

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Letters in Organic Chemistry

Title: Syntheses of Carbamate Derivatives of Quercetin by Reaction with Amino Acid Ester Isocyanates

Volume: 2 Issue: 6

Author(s): X. Wu, L. Cheng, D. Xiang and Y. Wei

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Keywords: quercetin, flavonoid, tirphosgene, carbamate, isocyanate

Abstract: Synthesis of amino acid carbamate derivatives of quercetin from partly protected quercetin and amino acid esters utilizing triphosgene as an auxiliary reagent was studied. A series of quercetin derivatives were obtained regioselectively by reaction with amino acid ester isocyanates under mild conditions and in high yields.

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Wu X., Cheng L., Xiang D. and Wei Y., Syntheses of Carbamate Derivatives of Quercetin by Reaction with Amino Acid Ester Isocyanates, Letters in Organic Chemistry 2005; 2 (6) . https://dx.doi.org/10.2174/1570178054640796