A process for the preparation of a compound represented by formula (7) (7) or a salt thereof including reacting a compound or a salt thereof the compound being obtained by a step of removing a R group and a R group from a compound represented by formula (5) (In formula (5) R1 and R2 are a hydrogen atom.) (5) or a salt thereof with a compound represented by formula (d) (d)or a salt thereof under the presence of a base. This is a process for the preparation of a 1 2 dihydroquinoline derivative with glucocorticoid receptor binding activity or a salt thereof which does not require a purification step by column chromatography and is suitable for industrial production.
