Volume 2014, Issue 3 p. 631-638
Full Paper

Synthesis of GABOB and GABOB-Based Chiral Units Possessing Distinct Protecting Groups

Trpimir Ivšić

Trpimir Ivšić

Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, P. O. Box 180, 10002 Zagreb, Croatia, http://www.irb.hr/eng/People/Trpimir-Ivsic http://www.irb.hr/eng/Research/Divisions-and-Centers/ Division-of-Organic-Chemistry-and-Biochemistry/Laboratory-for-stereoselective-catalysis-and-biocatalysis

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Irena Dokli

Irena Dokli

Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, P. O. Box 180, 10002 Zagreb, Croatia, http://www.irb.hr/eng/People/Trpimir-Ivsic http://www.irb.hr/eng/Research/Divisions-and-Centers/ Division-of-Organic-Chemistry-and-Biochemistry/Laboratory-for-stereoselective-catalysis-and-biocatalysis

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Ana Rimac

Ana Rimac

Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, P. O. Box 180, 10002 Zagreb, Croatia, http://www.irb.hr/eng/People/Trpimir-Ivsic http://www.irb.hr/eng/Research/Divisions-and-Centers/ Division-of-Organic-Chemistry-and-Biochemistry/Laboratory-for-stereoselective-catalysis-and-biocatalysis

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Zdenko Hameršak

Zdenko Hameršak

Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, P. O. Box 180, 10002 Zagreb, Croatia, http://www.irb.hr/eng/People/Trpimir-Ivsic http://www.irb.hr/eng/Research/Divisions-and-Centers/ Division-of-Organic-Chemistry-and-Biochemistry/Laboratory-for-stereoselective-catalysis-and-biocatalysis

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First published: 25 November 2013
Citations: 5

Graphical Abstract

A stereoselective route to GABOB (4-amino-3-hydroxybutanoic acid) derivatives with three different protecting groups is presented. Selective deprotection produced diprotected chiral building blocks with a free carboxylic acid or hydroxy group. Removal of all the protecting groups allowed GABOB to be isolated.

Abstract

In addition to the varied biological activity of GABOB (4-amino-3-hydroxybutanoic acid), the structure of its protected derivatives makes them interesting chiral intermediates for the synthesis of more complex compounds. A stereoselective route to GABOB derivatives with three different protecting groups is presented, using anhydride desymmetrization as a chirality-inducing step. Selective removal of the protecting groups gave compounds with a free carboxylic acid or hydroxy group. Removal of all of the protecting groups allowed GABOB to be isolated in good yield and with excellent ee.