| abstract |
A production method of an acetamidopyrrolidine derivative or a salt thereof comprising the reaction steps represented by the following formula: n n nwherein R 1 represents a hydrogen atom or a C 1 -C 6 alkyl group; R 13 , R 14 , R 15 and R 16 each represent independently a hydrogen atom, a halogen atom, a C 1 -C 6 alkyl group, a C 1 -C 6 alkoxy group, a hydroxyl group, a C 1 -C 6 haloalkyl group or a C 1 -C 6 haloalkoxy group; and R 21 represents an ester-type protecting group. |