p-methoxybenzyl (6R,7R)-7-[(Z)-2-fluoromethoxyimino-2-(5-tritylamino-1,2,4-thiadiazol-3-yl)acetamido]-3-[2-(imidazo[5,1-b]thiazol-3-yl)vinyl]-3-cephem-4-carboxylate 以83%的产率得到p-methoxybenzyl (6R,7R)-7-[(Z)-2-fluoromethoxyimino-2-(5-tritylamino-1,2,4-thiadiazol-3-yl)acetamido]-3-[2-(6-methylimidazo[5,1-b]thiazolium-3-yl)vinyl]-3-cephem-4-carboxylate iodide