| 摘要 |
The present invention provides an industrially useful method for synthesizing a cyclic diamine derivative (4) or a salt thereof which serves as an ACAT inhibitor. A 2-hydroxyacetylaminopyridine compound represented by formula (1), and a method for producing a cyclic diamine derivative represented by formula (4) or a salt thereof from compound (1) through 1) Step A-1, 2) Steps B-1 and B-2, or 3) Steps B-1, B-3, and B-4.
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