A method for producing mugineic acids, which is represented by the following scheme:
(wherein R
1
and R
2
represent a hydrogen atom or a hydroxyl group, R
3
represents a hydroxyl group or an amino group, R
4
and R
7
represent a hydrogen atom or a protecting group of a carboxyl group, R
5
represents a protecting group of an amino group, R
6
represents a protecting group of a carboxyl group, and R
8
represents —OR
9
(wherein R
9
represents a protecting group of a hydroxyl group) or —NHR
15
(wherein R
10
represents a protecting group of an amino group)).