PROBLEM TO BE SOLVED: To provide a new cyclic amino acid derivative useful as a synthetic intermediate for drugs and agricultural chemicals, its intermediate, and a method of manufacturing the compound having high general-purpose properties which can be applied to 4- to 6-membered rings and can obtain a target product with an extremely high optical selectivity.
SOLUTION: The optically active amino acid derivative represented by formula (1) is obtained by derivatizing an optically active amino acid represented by formula (3) as a raw material to an N-haloalkylamino acid derivative represented by formula (2) and reacting the compound with a base.
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