Chemistry of sulfoxides and related compounds. XXXIV. Mechanism of sulfonium ylide reactions. Synthesis of cyclopropanes and oxiranes of high optical purity
A click chemistry approach based on the reaction between alkynylflavins and mono(6-azido-6-deoxy)-β-cyclodextrin has proven to be a useful tool for the synthesis of flavin-cyclodextrin conjugates studied as monooxygenase mimics in enantioselective sulfoxidations.
frontier in the development of chiral stationary phases for chromatographic enantioseparation involves homochiral metal–organic frameworks (MOFs). Using enantiopure (R)-2,2′-dihydroxy-1,1′-binaphthalene-6,6′-dicarboxylic acid as a starting material, we prepared three homochiral MOFs that were further used as chiral stationary phases for high-performanceliquidchromatography to separate the enantiomers
Chloroperoxidaseoxidation of sulphides affords the corresponding sulphoxides having the (R) absolute configuration in up to 92% enantiomeric excess (e.e.).
硫化物的氯过氧化物酶氧化得到相应的具有(R)绝对构型的亚砜,其对映体过量最多为92%(ee)。
Enzymatic Synthesis of Novel Chiral Sulfoxides Employing Baeyer-Villiger Monooxygenases
作者:Ana Rioz-Martínez、Gonzalo de Gonzalo、Daniel E. Torres Pazmiño、Marco W. Fraaije、Vicente Gotor
DOI:10.1002/ejoc.201000890
日期:2010.11
Optically active sulfoxides are compounds of high interest in organic chemistry. Herein, we report the preparation of a set of chiral heteroaryl alkyl, cyclohexyl alkyl, and alkyl alkyl sulfoxides by using enantioselective sulfoxidation reactions employing three Baeyer-Villigermonooxygenases (BVMOs). Careful selection of the reaction conditions, starting sulfide, and biocatalyst can be used to achieve
Exploring the biocatalytic scope of a bacterial flavin-containing monooxygenase
作者:Ana Rioz-Martínez、Malgorzata Kopacz、Gonzalo de Gonzalo、Daniel E. Torres Pazmiño、Vicente Gotor、Marco W. Fraaije
DOI:10.1039/c0ob00988a
日期:——
A bacterial flavin-containing monooxygenase (FMO), fused to phosphite dehydrogenase, has been used to explore its biocatalytic potential. The bifunctional biocatalyst could be expressed in high amounts in Escherichia coli and was able to oxidize indole and indole derivatives into a variety of indigo compounds. The monooxygenase also performs the sulfoxidation of a wide range of prochiral sulfides, showing moderate to good enantioselectivities in forming chiral sulfoxides.