Regioselective Enzymatic Halogenation of Substituted Tryptophan Derivatives using the FAD-Dependent Halogenase RebH

Frese M, Guzowska PH, Voss H, Sewald N (2014)
ChemCatChem 6(5): 1270-1276.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Frese, MarcelUniBi; Guzowska, Paulina H.; Voss, Hauke; Sewald, NorbertUniBi
Abstract / Bemerkung
Regioselective methods to establish carbon-halide bonds are still rare, although halogenation is considered as a commonly used methodology for the functionalization of organic compounds. The incorporation of halogen substituents by organic synthesis usually requires hazardous conditions, shows poor regioselectivity and results in the formation of unwanted byproducts. In addition, halogenation by electrophilic aromatic substitution (SEAr) obeys distinct rules depending on electron-withdrawing or -donating groups already present in the aromatic ring. We employed the tryptophan-7-halogenase RebH for regioselective enzymatic halogenation to overcome these limitations. In combination with a tryptophan synthase, an array of C5- and C6-substituted tryptophan derivatives was synthesized and halogenated by RebH. The halogenase is able override these directing effects and halogenates at the electronically unfavored C7-meta-position, even in presence of ortho/para-directing groups.
Stichworte
tryptophan; regioselectivity; halogenase; biocatalysis; enzymes
Erscheinungsjahr
2014
Zeitschriftentitel
ChemCatChem
Band
6
Ausgabe
5
Seite(n)
1270-1276
ISSN
1867-3880
Page URI
https://pub.uni-bielefeld.de/record/2681745

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Frese M, Guzowska PH, Voss H, Sewald N. Regioselective Enzymatic Halogenation of Substituted Tryptophan Derivatives using the FAD-Dependent Halogenase RebH. ChemCatChem. 2014;6(5):1270-1276.
Frese, M., Guzowska, P. H., Voss, H., & Sewald, N. (2014). Regioselective Enzymatic Halogenation of Substituted Tryptophan Derivatives using the FAD-Dependent Halogenase RebH. ChemCatChem, 6(5), 1270-1276. doi:10.1002/cctc.201301090
Frese, M., Guzowska, P. H., Voss, H., and Sewald, N. (2014). Regioselective Enzymatic Halogenation of Substituted Tryptophan Derivatives using the FAD-Dependent Halogenase RebH. ChemCatChem 6, 1270-1276.
Frese, M., et al., 2014. Regioselective Enzymatic Halogenation of Substituted Tryptophan Derivatives using the FAD-Dependent Halogenase RebH. ChemCatChem, 6(5), p 1270-1276.
M. Frese, et al., “Regioselective Enzymatic Halogenation of Substituted Tryptophan Derivatives using the FAD-Dependent Halogenase RebH”, ChemCatChem, vol. 6, 2014, pp. 1270-1276.
Frese, M., Guzowska, P.H., Voss, H., Sewald, N.: Regioselective Enzymatic Halogenation of Substituted Tryptophan Derivatives using the FAD-Dependent Halogenase RebH. ChemCatChem. 6, 1270-1276 (2014).
Frese, Marcel, Guzowska, Paulina H., Voss, Hauke, and Sewald, Norbert. “Regioselective Enzymatic Halogenation of Substituted Tryptophan Derivatives using the FAD-Dependent Halogenase RebH”. ChemCatChem 6.5 (2014): 1270-1276.

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