Volume 130, Issue 19 pp. 5565-5569
Zuschrift

Synthesis of Branched-Chain Sugars with a DHAP-Dependent Aldolase: Ketones are Electrophile Substrates of Rhamnulose-1-phosphate Aldolases

Victor Laurent

Victor Laurent

Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, 63000 Clermont-Ferrand, France

Search for more papers by this author
Dr. Ekaterina Darii

Dr. Ekaterina Darii

Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Univ Paris-Saclay, 91057 Evry, France

Search for more papers by this author
Angelina Aujon

Angelina Aujon

Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, 63000 Clermont-Ferrand, France

Search for more papers by this author
Marine Debacker

Marine Debacker

Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, 63000 Clermont-Ferrand, France

Search for more papers by this author
Jean-Louis Petit

Jean-Louis Petit

Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Univ Paris-Saclay, 91057 Evry, France

Search for more papers by this author
Dr. Virgil Hélaine

Dr. Virgil Hélaine

Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, 63000 Clermont-Ferrand, France

Search for more papers by this author
Dr. Tibor Liptaj

Dr. Tibor Liptaj

Slovak University of Technology, Faculty of Chemical and Food Technology, Radlinského 9, 81237 Bratislava, Slovakia

Search for more papers by this author
Martin Breza

Martin Breza

Slovak University of Technology, Faculty of Chemical and Food Technology, Radlinského 9, 81237 Bratislava, Slovakia

Search for more papers by this author
Aline Mariage

Aline Mariage

Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Univ Paris-Saclay, 91057 Evry, France

Search for more papers by this author
Lionel Nauton

Lionel Nauton

Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, 63000 Clermont-Ferrand, France

Search for more papers by this author
Dr. Mounir Traïkia

Dr. Mounir Traïkia

Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, 63000 Clermont-Ferrand, France

Search for more papers by this author
Dr. Marcel Salanoubat

Dr. Marcel Salanoubat

Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Univ Paris-Saclay, 91057 Evry, France

These authors contributed equally to this work.

Search for more papers by this author
Prof. Dr. Marielle Lemaire

Prof. Dr. Marielle Lemaire

Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, 63000 Clermont-Ferrand, France

These authors contributed equally to this work.

Search for more papers by this author
Dr. Christine Guérard-Hélaine

Corresponding Author

Dr. Christine Guérard-Hélaine

Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, 63000 Clermont-Ferrand, France

These authors contributed equally to this work.

Search for more papers by this author
Dr. Véronique de Berardinis

Corresponding Author

Dr. Véronique de Berardinis

Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Univ Paris-Saclay, 91057 Evry, France

These authors contributed equally to this work.

Search for more papers by this author
First published: 15 March 2018
Citations: 10

Abstract

Dihydroxyacetone phosphate (DHAP)-dependent rhamnulose aldolases display an unprecedented versatility for ketones as electrophile substrates. We selected and characterized a rhamnulose aldolase from Bacteroides thetaiotaomicron (RhuABthet) to provide a proof of concept. DHAP was added as a nucleophile to several α-hydroxylated ketones used as electrophiles. This aldol addition was stereoselective and produced branched-chain monosaccharide adducts with a tertiary alcohol moiety. Several aldols were readily obtained in good to excellent yields (from 76 to 95 %). These results contradict the general view that aldehydes are the only electrophile substrates for DHAP-dependent aldolases and provide a new C−C bond-forming enzyme for stereoselective synthesis of tertiary alcohols.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.