A method for producing a compound represented by general formula: [wherein, R 1 is optionally substituted C 1 -C 6 alkyl, optionally substituted C 3 -C 8 cycloalkyl, optionally substituted aralkyl, or optionally substituted heteroaralkyl, R 2 is C 1 -C 6 alkyl or an amino protecting group, R 4 is a carboxyl protecting group, L 1 is a single bond or -CH 2 -, L 2 is a single bond or -CH 2 -, and n is 1 or 2, with the proviso that when L 1 is -CH 2 -, L 2 is a single bond, and when L 2 is -CH 2 -, L 1 is a single bond], its chemically acceptable salt, or a solvate thereof, the method comprising the following steps: Step A: reacting a compound represented by general formula: [wherein, R 2, R 4, L 1, L 2, and n are synonymous with those described above], its chemically acceptable salt, or a solvate thereof with a cyclization reagent to obtain a compound represented by general formula: [wherein, R 2, R 4, L 1, L 2, and n are synonymous with those described above], its chemically acceptable salt, or a solvate thereof, Step B: reacting the compound represented by general formula, its chemically acceptable salt, or a solvate thereof with an oxidizing agent to obtain a compound represented by general formula: [wherein, R 2, R 4, L 1, L 2, and n are synonymous with those described above], its chemically acceptable salt, or a solvate thereof, and Step C: reacting the compound represented by general formula, its chemically acceptable salt, or a solvate thereof with R 1 OH (wherein, R 1 is synonymous with those described above) to obtain the compound represented by general formula, its chemically acceptable salt, or a solvate thereof. R 1 is optionally substituted C 1 -C 6 alkyl, optionally substituted C 3 -C 8 cycloalkyl, optionally substituted aralkyl, or optionally substituted heteroaralkyl, R 2 is C 1 -C 6 alkyl or an amino protecting group, R 4 is a carboxyl protecting group, L 1 is a single bond or -CH 2 -, L 2 is a single bond or -CH 2 -, and n is 1 or 2, with the proviso that when L 1 is -CH 2 -, L 2 is a single bond, and when L 2 is -CH 2 -, L 1 is a single bond], its chemically acceptable salt, or a solvate thereof, the method comprising the following steps: Step A: reacting a compound represented by general formula: [wherein, R 2, R 4, L 1, L 2, and n are synonymous with those described above], its chemically acceptable salt, or a solvate thereof with a cyclization reagent to obtain a compound represented by general formula: [wherein, R 2, R 4, L 1, L 2, and n are synonymous with those described above], its chemically acceptable salt, or a solvate thereof, Step B: reacting the compound represented by general formula, its chemically acceptable salt, or a solvate thereof with an oxidizing agent to obtain a compound represented by general formula: [wherein, R 2, R 4, L 1, L 2, and n are synonymous with those described above], its chemically acceptable salt, or a solvate thereof, and Step C: reacting the compound represented by general formula, its chemically acceptable salt, or a solvate thereof with R 1 OH (wherein, R 1 is synonymous with those described above) to obtain the compound represented by general formula, its chemically acceptable salt, or a solvate thereof. Step A: reacting a compound represented by general formula: [wherein, R 2, R 4, L 1, L 2, and n are synonymous with those described above], its chemically acceptable salt, or a solvate thereof with a cyclization reagent to obtain a compound represented by general formula: [wherein, R 2, R 4, L 1, L 2, and n are synonymous with those described above], its chemically acceptable salt, or a solvate thereof, [wherein, R 2, R 4, L 1, L 2, and n are synonymous with those described above], its chemically acceptable salt, or a solvate thereof with a cyclization reagent to obtain a compound represented by general formula: [wherein, R 2, R 4, L 1, L 2, and n are synonymous with those described above], its chemically acceptable salt, or a solvate thereof, Step B: reacting the compound represented by general formula, its chemically acceptable salt, or a solvate thereof with an oxidizing agent to obtain a compound represented by general formula: [wherein, R 2, R 4, L 1, L 2, and n are synonymous with those described above], its chemically acceptable salt, or a solvate thereof, and [wherein, R 2, R 4, L 1, L 2, and n are synonymous with those described above], its chemically acceptable salt, or a solvate thereof, and Step C: reacting the compound represented by general formula, its chemically acceptable salt, or a solvate thereof with R 1 OH (wherein, R 1 is synonymous with those described above) to obtain the compound represented by general formula, its chemically acceptable salt, or a solvate thereof.