Subscribe to RSS
DOI: 10.1055/s-0036-1590938
Asymmetric Synthetic Strategies of (R)-(–)-Baclofen: An Antispastic Drug
D.S. and K.S.N.R. thank the Council of Scientific and Industrial Research, New Delhi for financial assistance in the form of a fellowship. P. R. thanks the Council of Scientific and Industrial Research, Ministry of Science and Technology, New Delhi, for funding the project ORIGIN (CSC-0108).Publication History
Received: 11 July 2017
Accepted after revision: 26 September 2017
Publication Date:
20 October 2017 (online)


Dedicated to Dr. Nitin W. Fadnavis, Natural Products Chemistry Division, IICT, Hyderabad on the occasion of his 63rd birthday
Abstract
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 Introduction
2 Resolution Synthetic Approaches
2.1 Chemical Resolution
2.2 Biocatalytic Resolution
3 Asymmetric Desymmetrization
3.1 Catalytic Enantioselective Desymmetrization
3.2 Enzymatic Desymmetrization
4 Chiral Auxiliary Induced Asymmetric Synthesis
4.1 Asymmetric Michael Addition
4.2 Asymmetric Aldol Addition
4.3 Asymmetric Nucleophilic Substitution
5 Asymmetric Reduction
5.1 Catalytic Asymmetric Hydrogenation
5.2 Bioreduction
6 Catalytic Asymmetric Conjugate Addition
7 Conclusion