| abstract |
An optically active compound of a cyclic amino acid such as (3S, 4S)-(1-aminomethyl-3,4-dimethyl-cyclopentyl) -acetic acid or a pharmaceutically acceptable salt thereof, a compound thereof or a pharmaceutical thereof Of methods and materials for the preparation of the opposite enantiomer of an acceptable salt. Corresponding cyano compounds, such as 2-((3S, 4S) -1-cyano-3,4-dimethylcyclopentyl) acetic acid or its opposite enantiomer or its salt or its opposite enantiomer Reducing the cyano moiety to an amino moiety. [Selection figure] None |