Synthesis of tetrahydrofuran-based natural products and their carba analogs via stereoselective enzyme mediated Baeyer–Villiger oxidation
摘要:
In this work we present efficient formal syntheses of several biologically interesting natural products (showdomycin, goniofufurone, tratts-kumausyne) and their novel carba analogs by applying different Baeyer-Villiger monooxygenases. This strategy provides access to tetrahydrofuran-based natural products, C-nucleosides and both antipodes of the corresponding carba analogs in high optical purities (up to >95% ee) starting from simple achiral and commercially available building blocks (tetrabromoacetone, furan and cyclopentadiene). The striking key features of this chemo-enzymatic approach are the introduction of four stereogenic centers in as few as three reaction steps within a desymmetrization approach and the short-cut of several reaction sequences by the implementation of a biocatalytic step. (C) 2015 Elsevier Ltd. All rights reserved.
Synthesis of tetrahydrofuran-based natural products and their carba analogs via stereoselective enzyme mediated Baeyer–Villiger oxidation
摘要:
In this work we present efficient formal syntheses of several biologically interesting natural products (showdomycin, goniofufurone, tratts-kumausyne) and their novel carba analogs by applying different Baeyer-Villiger monooxygenases. This strategy provides access to tetrahydrofuran-based natural products, C-nucleosides and both antipodes of the corresponding carba analogs in high optical purities (up to >95% ee) starting from simple achiral and commercially available building blocks (tetrabromoacetone, furan and cyclopentadiene). The striking key features of this chemo-enzymatic approach are the introduction of four stereogenic centers in as few as three reaction steps within a desymmetrization approach and the short-cut of several reaction sequences by the implementation of a biocatalytic step. (C) 2015 Elsevier Ltd. All rights reserved.
Accessing tetrahydrofuran-based natural products by microbial Baeyer–Villiger biooxidation
作者:Marko D. Mihovilovic、Dario A. Bianchi、Florian Rudroff
DOI:10.1039/b606633j
日期:——
A heterobicyclic lactone obtained by stereoselective BaeyerâVilliger biooxidation with recombinant whole-cells expressing cyclopentanone monooxygenase from Comamonas sp. NCIMB 9872 was used for formal total syntheses of various natural products containing a tetrahydrofuran structural motif.
Optimizing Fermentation Conditions of Recombinant <i>Escherichia coli</i> Expressing Cyclopentanone Monooxygenase
作者:Florian Rudroff、Véronique Alphand、Roland Furstoss、Marko D. Mihovilovic
DOI:10.1021/op0502654
日期:2006.5.1
Microbial Baeyer-Villiger oxidation of different substrates with cyclopentanone monooxygenase (CPMO) from Comamonas NCIMB 9872 was up-scaled to benchtop fermenter scale. Conditions for cell growth and biocatalyst production were optimized, and a convenient, environmentally friendly and applicable methodology for the preparation of chiral building blocks for natural product and bioactive compound synthesis was developed by applying a resin based on the concept of in situ "substrate feeding-product removal" (SFPR). Three different ketones (4-methylcyclohexanone, rac-3-methylcyclohexanone, and 8-oxabicyclo[3.2.1] oct-6-en-3-one) were converted in 5-15 g/L scale in a conventional bioreactor, with a volumetric productivity of up to 1 g L-1 h(-1) in good to excellent yield and enantiomeric purity.
Synthesis of tetrahydrofuran-based natural products and their carba analogs via stereoselective enzyme mediated Baeyer–Villiger oxidation
作者:Florian Rudroff、Dario A. Bianchi、Roberto Moran-Ramallal、Naseem Iqbal、Dominik Dreier、Marko D. Mihovilovic
DOI:10.1016/j.tet.2015.11.048
日期:2016.11
In this work we present efficient formal syntheses of several biologically interesting natural products (showdomycin, goniofufurone, tratts-kumausyne) and their novel carba analogs by applying different Baeyer-Villiger monooxygenases. This strategy provides access to tetrahydrofuran-based natural products, C-nucleosides and both antipodes of the corresponding carba analogs in high optical purities (up to >95% ee) starting from simple achiral and commercially available building blocks (tetrabromoacetone, furan and cyclopentadiene). The striking key features of this chemo-enzymatic approach are the introduction of four stereogenic centers in as few as three reaction steps within a desymmetrization approach and the short-cut of several reaction sequences by the implementation of a biocatalytic step. (C) 2015 Elsevier Ltd. All rights reserved.