Cl.C(N=C=NCCCN(C)C)C.[NH2:13][C:14]1[C:15]([NH:24][S:25]([CH2:28][CH3:29])(=[O:27])=[O:26])=[N:16][CH:17]=[C:18]([C:20]([F:23])([F:22])[F:21])[CH:19]=1.[CH:30]1([C:36](O)=[O:37])[CH2:35][CH2:34][CH2:33][CH2:32][CH2:31]1>C(Cl)Cl>[CH2:28]([S:25]([NH:24][C:15]1[C:14]([NH:13][C:36]([CH:30]2[CH2:35][CH2:34][CH2:33][CH2:32][CH2:31]2)=[O:37])=[CH:19][C:18]([C:20]([F:23])([F:21])[F:22])=[CH:17][N:16]=1)(=[O:27])=[O:26])[CH3:29]An alternative process will be described. In 20 ml of methylene chloride, 0.5 g of 4-diemthylaminopyridine was dissolved, and 0.78 g of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride was added and dissolved. Then, 1 g of N-(3-amino-5-trifluoromethyl-2-pyridyl)ethanesulfonamide was added thereto, and 30 minutes later, 0.52 g of cyclohexanecarboxylic acid was added thereto, and stirring was conducted for 10 hours. After completion of the reaction, 40 ml of methylene chloride was added to the reaction product, and the reaction product was washed with 10% hydrochloric acid and then washed with an aqueous sodium chloride solution and then dried over anhydrous sodium sulfate. From the extract layer, solvent was distilled off and the obtained residue was purified by silica gel column chromatography to obtain 0.88 g of the desired product.
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