Enantioselective cooperative triple catalysis: unique roles of Au(<scp>i</scp>)/amine/chiral Brønsted acid catalysts in the addition/cycloisomerization/transfer hydrogenation cascade
作者:Nitin T. Patil、Vivek S. Raut、Ramesh Babu Tella
DOI:10.1039/c2cc37623g
日期:——
An enantioselective cooperative process involving the concerted/simultaneous action of three different catalysts i.e. Au(I)/amine/chiral Bronsted acid catalysts has been realized for the synthesis of 2-substituted tetrahydroquinolines from 2-aminobenzaldehydes and terminal alkynes.
Deracemization of Phenyl-Substituted 2-Methyl-1,2,3,4-Tetrahydroquinolines by a Recombinant Monoamine Oxidase from <i>Pseudomonas monteilii</i>
ZMU-T01
A monoamineoxidase (MAO5) fromPseudomonasmonteilii ZMU‐T01 was first heterologously expressed in Escherichia coli BL21(DE3) and then used as a biocatalyst for the deracemization of racemic 2‐methyl‐1,2,3,4‐tetrahdroquinoline derivatives to yield the unreacted R enantiomer with up to >99 % ee. Sequence alignment revealed that MAO5 shared 14.7 % identity toward the well‐studied monoamineoxidase (MAO‐N)