Toluene Dioxygenase-Catalyzed Synthesis and Reactions of cis-Diol Metabolites Derived from 2- and 3-Methoxyphenols
| Autor: | Christopher C. R. Allen, Amit Gohil, Colin McRoberts, Peter B. A. McIntyre, Peter N. Horton, Paul J. Stevenson, John F. Malone, Narain D. Sharma, Simon J. Coles, Stewart Floyd, Derek R. Boyd |
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| Rok vydání: | 2015 |
| Předmět: |
Models
Molecular Ketone Stereochemistry Metabolite Diol Cyclohexanone Toluene dioxygenase Naphthalenes Crystallography X-Ray chemistry.chemical_compound Phenols Cyclohexenone polycyclic compounds Organic chemistry Biotransformation chemistry.chemical_classification Molecular Structure Cyclohexanones organic chemicals Organic Chemistry Aromatization Stereoisomerism Ketones chemistry Biocatalysis Oxygenases Oxidation-Reduction |
| Zdroj: | ResearcherID |
| ISSN: | 1520-6904 0022-3263 |
| Popis: | Using toluene dioxygenase as biocatalyst, enantiopure cis-dihydrodiol and cis-tetrahydrodiol metabolites, isolated as their ketone tautomers, were obtained from meta and ortho methoxyphenols. Although these isomeric phenol substrates are structurally similar, the major bioproducts from each of these biotransformations were found at different oxidation levels. The relatively stable cyclohexenone cis-diol metabolite from meta methoxyphenol was isolated, while the corresponding metabolite from ortho methoxyphenol was rapidly bioreduced to a cyclohexanone cis-diol. The chemistry of the 3-methoxycyclohexenone cis-diol product was investigated and elimination, aromatization, hydrogenation, regioselective O-exchange, Stork-Danheiser transposition and O-methylation reactions were observed. An offshoot of this technology provided a two-step chemoenzymatic synthesis, from meta methoxyphenol, of a recently reported chiral fungal metabolite; this synthesis also established the previously unassigned absolute configuration. |
| Databáze: | OpenAIRE |
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