Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 91523-50-1, is researched, SMILESS is OC(=O)C1NCCC2=C1C=CC(O)=C2, Molecular C10H11NO3Journal, Green Chemistry called A biocatalytic redox cascade approach for one-pot deracemization of carboxyl-substituted tetrahydroisoquinolines by stereoinversion, Author is Ju, Shuyun; Qian, Mingxin; Li, Jing; Xu, Gang; Yang, Lirong; Wu, Jianping, the main research direction is enzymic redox cascade deracemization tetrahydroisoquinolinecarboxylate.COA of Formula: C10H11NO3.
Optically pure 1,2,3,4-tetrahydroisoquinoline carboxylic acids are important chiral building blocks in the pharmaceutical and fine chem. industries. However, the existing chemo-enzymic deracemization method employing D-amino acid oxidase from Fusarium solani M-0718 (FsDAAO) suffers from the requirement for a large excess of a nonselective chem. reducing agent. To explore an alternative method, we envisaged a concurrent biocatalytic oxidation and reduction cascade in one pot. Herein, we report a novel biocatalytic route for the asym. reduction of 3,4-dihydroisoquinoline-1-carboxylic acids employing Δ1-piperidine-2-carboxylate/Δ1-pyrrolidine-2-carboxylate reductase from Pseudomonas putida KT2440 (PpDpkA) as a biocatalyst, yielding the corresponding (S)-1-carboxyl-substituted tetrahydroisoquinolines with high conversions and enantiomeric excess (>99% ee). By combining FsDAAO and PpDpkA in one pot, a fully biocatalytic method was demonstrated for the deracemization of a range of racemic 1-carboxyl substituted tetrahydroisoquinolines to produce the corresponding (S)-enantiomers with >99% conversions and >99% ee. Furthermore, preparative-scale biotransformation of racemic 1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid gave the (S)-enantiomer with 89% isolated yield and >99% ee. Taken together, we provide an enantioselective biocatalytic redox cascade method for the one-pot synthesis of enantiopure 1,2,3,4-tetrahydroisoquinoline carboxylic acids.
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Reference:
1,8-Naphthyridine – Wikipedia,
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