| 摘要 |
The present invention relates to novel processes for the preparation of optically active 3-aminocarboxylic acids and their esters, in particular processes for the preparation of optically active compounds of the formula IA or IB as free bases or as acid addition salts thereof, in which the radicals are as defined in the description; in particular using the catalytic hydrogenation of olefinic precursors in the presence of platinum on alumina as a catalyst and the removal of chiral auxiliary groups from salt precursors; and novel process sections in the route for their synthesis, and processes for the preparation of biologically, in particular pharmacologically, active compounds, which comprise the novel processes.
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