Enzymatic kinetic resolution of chiral sulfoxides – an enantiocomplementary approach
作者:Vladimír Nosek、Jiří Míšek
DOI:10.1039/c9cc05470g
日期:——
A new enzymatic assay for the preparation of chiral sulfoxides that is enantiocomplementary to the known (S)-enantiomer-reducing activity of methionine sulfoxide reductase A (MsrA) is described. To this end, we have utilized the enzyme DMSO reductase (DmsABC), recently discovered by us being highly upregulated in stationary phase E. coli bacteria.
Chiral non-racemic α-substitutedsulfoxides were reacted with O-silylatedketeneacetal in the presence of a catalytic amount of ZnI2 in THF to give chiral non-racemic α-siloxysulfides in >99% ee. This is the highest enantioselectivity reported to date for the Pummerer reaction.