Abstract:
An optically active ketone represented by the following formula (2): wherein, Ar 1 represents a furyl group, a thienyl group or a C 6-20 aryl group; X 1 represents a halogen atom, and * indicates an asymmetric carbon atom, is produced by stereoselectively reducing an enone compound represented by the following formula (1) : wherein, Ar 1 and X 1 represent the same as the above.
Abstract translation:由下式表示的光学活性酮(2):其中,Ar 1表示呋喃基,噻吩基或C 6-20芳基; X 1 darstellt卤原子,和*表示不对称碳原子上,通过立体选择地还原到烯酮由下述式(1)表示的化合物制备:worin中,Ar 1和X 1表示与上述相同。
Abstract:
PROBLEM TO BE SOLVED: To provide an efficient method for producing an optically active 2,6-dimethylphenylalanine derivative used as an intermediate of μ/δ-opioid receptor modulator medicine.SOLUTION: This optically active 2,6-dimethylphenylalanine derivative is produced by a method including a step of obtaining 3,5-dimethyl-4-halo-cyanobenzene by performing a halogenation and cyanization reaction to 3,5-dimethylaniline.
Abstract:
PROBLEM TO BE SOLVED: To provide a process of simply producing an optically active aryloxycarboxylic acid derivative useful as an intermediate of drugs from an inexpensive raw material. SOLUTION: The optically active aryloxycarboxylic acid derivative can be obtained by the acid hydrolysis of an optically active aryloxycarboxylic acid ester derivative represented by formula (3). The optically active aryloxycarboxylic acid ester derivative represented by formula (3) can be obtained by reacting an α-bromocarboxylic acid ester derivative represented by formula (1) with an aryloxy derivative represented by formula (2). COPYRIGHT: (C)2009,JPO&INPIT