Catalytic Asymmetric Hydrogenation of Tetrasubstituted Unsaturated Lactams: An Efficient Approach to Enantioenriched 3,4-Disubstituted Piperidines

2022 ◽  
Author(s):  
Congcong Yin ◽  
Yingmin Pan ◽  
Xumu Zhang ◽  
Qin Yin
Synthesis ◽  
2017 ◽  
Vol 50 (02) ◽  
pp. 211-226 ◽  
Author(s):  
Perla Ramesh ◽  
Devatha Suman ◽  
Koti Reddy

Baclofen is an antispastic drug used as a muscle relaxant in the treatment of the paroxysmal pain of trigeminal neuralgia, spasticity of the spinal cord and cerebral origin. Baclofen resides biological activity exclusively in its (R)-(–)-enantiomer. In this review, various asymmetric synthetic strategies for (R)-(–)-baclofen are described.1 Introduction2 Resolution Synthetic Approaches2.1 Chemical Resolution2.2 Biocatalytic Resolution3 Asymmetric Desymmetrization3.1 Catalytic Enantioselective Desymmetrization3.2 Enzymatic Desymmetrization4 Chiral Auxiliary Induced Asymmetric Synthesis4.1 Asymmetric Michael Addition4.2 Asymmetric Aldol Addition4.3 Asymmetric Nucleophilic Substitution5 Asymmetric Reduction5.1 Catalytic Asymmetric Hydrogenation5.2 Bioreduction6 Catalytic Asymmetric Conjugate Addition7 Conclusion


2015 ◽  
Vol 2015 (9) ◽  
pp. 1887-1893 ◽  
Author(s):  
Piotr Gajewski ◽  
Marc Renom-Carrasco ◽  
Sofia Vailati Facchini ◽  
Luca Pignataro ◽  
Laurent Lefort ◽  
...  

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