反应详情

A solution of 2-(2-formamidothiazol-4-yl)-2-carbamoylmethoxyiminoacetic acid (syn isomer, 1.35 g.), N,N-dimethylformamide (0.814 g.) and phosphoryl chloride (1.71 g.) in tetrahydrofuran (13.4 ml.) and a solution of 7-amino-3-(1-n-hexyl-1H-tetrazol-5-yl)thiomethyl-3-cephem-4-carboxylic acid (1.95 g.) in 50% aqueous acetone (20 ml.) were treated in a similar manner to that of Example 9-(1) to give 7-[2-(2-formamidothiazol-4-yl)-2-cyanomethoxyiminoacetamido]-3-(1-n-hexyl-1H-tetrazol-5-yl)thiomethyl-3-cephem-4-carboxylic acid (syn isomer, 1.2 g.).