INDOLINE DERIVATIVE AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a new synthetic intermediate for producing an indoline derivative having an excellent acyl-CoA-cholesterol acyltransferase(ACAT) inhibitory activity, and to provide a method for producing the synthetic intermediate. SOLUTION: The synthetic intermediate is a compound represented by formula (I) (wherein, R<1> denotes a protective group of amino group; R<2> and R<3> are each the same or different and denote each a lower alkyl group) or its salt or an amide thereof.