Enantioselective toluene dioxygenase catalysed di- and tri-hydroxylation of monosubstituted benzenes
作者:Derek R. Boyd、Narain D. Sharma、Nigel I. Bowers、John Duffy、John S. Harrison、Howard Dalton
DOI:10.1039/b000753f
日期:——
Asymmetric cis-dihydroxylation to yield diols 2A–2G and sequential benzylic monohydroxylation–cis-dihydroxylation to yield triols 4A–4G (trihydroxylation), occurred during biotransformation of a series of monosubstituted alkylbenzene substrates 1A–1G using toluene dioxygenase, a biocatalyst present in Pseudomonasputida UV4. Dioxygenase-catalysed cis-dihydroxylation of the R and S benzylic alcohol
A study of substrate specificity of toluene dioxygenase in processing aromatic compounds containing benzylic and/or remote chiral centers
作者:Vu P. Bui、Trond Vidar Hansen、Yngve Stenstrøm、Tomas Hudlicky、Douglas W. Ribbons
DOI:10.1039/b006545p
日期:——
A series of substituted arenes containing remote chiral centers were screened as substrates for toluene dioxygenase (TDO). The absolute stereochemistry of the new metabolites was determined by chemical and spectroscopic correlation with synthetic standards. There was no evidence for kinetic resolution; enantiomers were indiscriminately processed by the enzyme to diastereomeric pairs, which were separable
Toluene dioxygenase-mediated oxidation of aromatic substrates with remote chiral centers
作者:Vu Bui、Trond Vidar Hansen、Yngve Stenstrøm、Douglas W. Ribbons、Tomas Hudlicky
DOI:10.1039/b002143l
日期:——
Several aromatic substrates containing remote chiral centers were subjected to toluene and naphthalene dioxygenase expressed in blocked mutants and recombinant organisms yielding cis-diol metabolites with little or no kinetic resolution.
Medium-Scale Preparation of Useful Metabolites of Aromatic Compounds via Whole-Cell Fermentation with Recombinant Organisms
作者:Mary Ann Endoma、Vu P. Bui、Jeff Hansen、Tomas Hudlicky
DOI:10.1021/op020013s
日期:2002.7.1
The whole-cell fermentation of aromatic coumpounds with Escherichia coli JM109 (pDTG601) on a medium scale (10-15 L) produces enantiopure cyclohexadienediols. A detailed procedure for the fermentation is described, and yields for several metabolites are provided. A similar procedure using E. coli JM109 (pDTG602) affords catechols. The dienediols are useful for asymmetric synthesis, and several important targets originating from these metabolites are tabulated.
Tandem enzyme-catalysed oxidations of alkyl phenyl sulfides and alkyl benzenes: enantiocomplementary routes to chiral phenols
作者:Derek R. Boyd、Narain D. Sharma、Vera Ljubez、Breige E. Byrne、Steven D. Shepherd、Christopher C. R. Allen、Leonid A. Kulakov、Michael J. Larkin、Howard Dalton
DOI:10.1039/b205903g
日期:2002.8.21
Dioxygenase-catalysed trioxygenation of alkylphenylsulfides and alkyl benzenes yields enantiopure cis-dihydrodiol sulfoxides and triols respectively; naphthalene cis-dihydrodiol dehydrogenase-catalysed aromatisation of these diastereoisomers gives enantiopure catechols of either configuration.