C3 and C6 Modification-Specific OYE Biotransformations of Synthetic Carvones and Sequential BVMO Chemoenzymatic Synthesis of Chiral Caprolactones
作者:Issa S. Issa、Helen S. Toogood、Linus O. Johannissen、James Raftery、Nigel S. Scrutton、John M. Gardiner
DOI:10.1002/chem.201805219
日期:2019.2.26
with additional substituents at C3 or C6, or both C3 and C6, using three types of OYEs (OYE2, PETNR and OYE3) shows significant impact of both regio‐substitution and the substrate diastereomer. Bioreduction of (−)‐carvone derivatives substituted with a Me and/or OH group at C6 is highly dependent on the diastereomer of the substrate. Derivatives bearing C6 substituents larger than methyl moieties are not
Enantioselective Synthesis of Functionalised Decalones by Robinson Annulation of Substituted Cyclohexanones, Derived from R-(−)-Carvone
作者:Ben J.M Jansen、Cindy C.J Hendrikx、Nikolai Masalov、Gerrit A Stork、Tommi M Meulemans、Fliur Z Macaev、Aede de Groot
DOI:10.1016/s0040-4020(00)00110-1
日期:2000.3
catalysed conjugate addition of methyl magnesium iodide to cyclohexenones and trapping of the enolate as its trimethylsilyl enol ether, followed by a trityl hexachloroantimonate (TrSbCl6) catalysed Mukaiyama-reaction, was applied to R-(−)-carvone. This proved to be an efficient method for the preparation of C-2, C-3 functionalised chiral cyclohexanones. These compounds were converted into their α-cyano ketones