Synthesis 2012; 44(13): 1951-1963
DOI: 10.1055/s-0031-1290373
short review
© Georg Thieme Verlag Stuttgart · New York

Syntheses of Isoxazoline-Based Amino Acids by Cycloaddition of Nitrile Oxides and Their Conversion into Highly Functionalized Bioactive Amino Acid Derivatives

Loránd Kiss
a   Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary, Fax: 3662545705   Email: fulop@pharm.u-szeged.hu
,
Melinda Nonn
a   Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary, Fax: 3662545705   Email: fulop@pharm.u-szeged.hu
b   Stereochemistry Research Group of the Hungarian Academy of Sciences, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary
,
Ferenc Fülöp*
a   Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary, Fax: 3662545705   Email: fulop@pharm.u-szeged.hu
b   Stereochemistry Research Group of the Hungarian Academy of Sciences, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary
› Author Affiliations
Further Information

Publication History

Received: 12 April 2012

Accepted after revision: 08 May 2012

Publication Date:
05 June 2012 (online)


Abstract

The present account illustrates the syntheses of isoxazoline-based amino acids by the cycloaddition of 1,3-dipolar nitrile oxides to the C–C double bond of unsaturated amino acid derivatives, with focus on the regio- and stereoselectivities of the transformations. Emphasis is also placed on the syntheses of highly functionalized amino acids by means of isoxazoline ring opening. The syntheses of various pharmacologically active compounds and their analogues via the above strategies are described.

1 Introduction

2 1,3-Dipolar Cycloadditions of Nitrile Oxides

3 Syntheses of Isoxazoline-Based Amino Acids

3.1 Syntheses of Isoxazoline α-Amino Acids

3.2 Syntheses of Isoxazoline γ-Amino Acids and Their Transformation into Bioactive Derivatives

3.3 Syntheses of Isoxazoline β-Amino Acids

3.3.1 Syntheses of Highly Functionalized Cyclic β-Amino Acids by 1,3-Dipolar Cycloaddition of Nitrile Oxides

4 Cycloaddition of Nitrile Oxides to Amino Acid Precursors

5 Summary and Outlook