5-[3-(1H-Tetrazol-5-yl)phenyl]-1,5,8,9,10,11-hexahydronaphtho[1,2-b][1,4]diazepine-2,4-dione sodium salt 、
5-[3-(1-methyl-1H-tetrazol-5-yl)phenyl]-1,5,8,9,10,11-hexahydronaphtho[1,2-b][1,4]diazepine-2,4-dione 在
crystal 作用下,
以to give 5-[3-(2-methyl-2H-tetrazol-5-yl)phenyl]-1,5,8,9,10,11-hexahydronaphtho[1,2-b][1,4]diazepine-2,4-dione as slightly brown crystal (18 mg, yield 46%) and 5-[3-(1-methyl-1H-tetrazol-5-yl)phenyl]-1,5,8,9,10,11-hexahydronaphtho[1,2-b][1,4]diazepine-2,4-dione as slightly brown crystal (3 mg, yield 8%)的产率得到5-[3-(2-methyl-2H-tetrazol-5-yl)phenyl]-1,5,8,9,10,11-hexahydronaphtho[1,2-b][1,4]diazepine-2,4-dione