1-Benzoylpiperazine hydrochloride

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2-Methylsulfanyl-5,6,7,8-tetrahydro-3H-quinazolin-4-one (100 mg; 0.51 mmol), phenylpiperazin-1-ylmethanone hydrochloride (115.5 mg; 0.51 mmol) and triethylamine (141.3 μl; 1.02 mmol) are reacted in isoamyl alcohol (1 ml) in accordance with the procedure for Example 9 (reaction time 6 h) and worked up. The crystals obtained after purification by column chromatography are dissolved in acetonitrile and water and freeze-dried; yield: 47 mg (27%), crystals; The crystals obtained after purification by column chromatography are dissolved in acetonitrile water and freeze-dried

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The amination reaction was performed in the same manner as in Example 16-(3) using 6-(methanesulfonyloxymethyl)-5-(((tert-butyl(dimethyl)silyl)oxy)methyl)-N-(1,2,4-thiadiazol-5-yl)pyridin-2-amine and 1-benzoylpiperazine hydrochloride obtained in the same manner as in Reference Example 1. Then, the deprotection reaction was performed in the same manner as in Example 5-(3) to give the title compound. The amination reaction obtained in the same manner as in Reference Example 1 Then, the deprotection reaction

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The amination reaction was performed in the same manner as in Example 16-(3) using 6-(methanesulfonyloxymethyl)-5-(((tert-butyl(dimethyl)silyl)oxy)methyl)-N-(1,2,4-thiadiazol-5-yl)pyridin-2-amine and 1-benzoylpiperazine hydrochloride obtained in the same manner as in Reference Example 1. Then, the deprotection reaction was performed in the same manner as in Example 5-(3) to give the title compound. The amination reaction obtained in the same manner as in Reference Example 1 Then, the deprotection reaction

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2-Methylsulfanyl-5,6,7,8-tetrahydro-3H-quinazolin-4-one (100 mg; 0.51 mmol), phenylpiperazin-1-ylmethanone hydrochloride (115.5 mg; 0.51 mmol) and triethylamine (141.3 μl; 1.02 mmol) are reacted in isoamyl alcohol (1 ml) in accordance with the procedure for Example 9 (reaction time 6 h) and worked up. The crystals obtained after purification by column chromatography are dissolved in acetonitrile and water and freeze-dried; yield: 47 mg (27%), crystals; The crystals obtained after purification by column chromatography are dissolved in acetonitrile water and freeze-dried