7-Chloro-7,8-dihydro-7-oxo-pyrido[2,3]-d]pyrimidine-6-carboxylic acid derivatives are intermediates useful for the production of 7,8-dihydro-2,5,8-trisubstituted-7-oxo-pyrido[2,3-d]-pyrimidine-6-carboxyl ic acid derivatives which in turn are gastric anti-secretory agents for treatment of peptic ulcer disease and generally anti-allergic agents useful in the treatment of atopic immediate hypersensitivity reactions.
7-
氯-7,8-二氢-7-氧基-
吡啶[2,3-d]
嘧啶-6-
羧酸衍
生物是用于生产7,8-二氢-2,5,8-三取代-7-氧基-
吡啶[2,3-d]
嘧啶-6-
羧酸衍
生物的中间体,而这些衍
生物则是治疗消化性溃疡疾病的胃抗分泌药物,通常也是治疗过敏反应的抗过敏药物,对于特应性即时过敏反应尤其有用。