| 摘要 |
Method for preparing a "syn" derivative of propanamide of forumula (I) by the action of a derivative of camphosultam of general formula (II) or (III) on aldehyde of formula (IV) in the presence of a Lewis acid and an organic base. In formulae (I) to (IV), X is a halogen atom, R is an alkyl, aryl or heteroaryl radical, R1 is the residue of one or other of the camphosultam enantiomers. The products obtained by the method may be used in the preparation of therapeutically active products.
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