2 -Alkylsulphonyl-7,8-dihydro-5-hydroxy-7-oxo-pyrido[2,3-d]pyrim

Organic compounds -- part of the class 532-570 series – Organic compounds – Nitrogen attached directly or indirectly to the purine ring...


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42424855, 424251, 544117, 544255, C07D47104, A61K 31505




2-Alkylsulfonyl-7,8-dihydro-5-hydroxy-7-oxo-pyrido[2,3-d]pyrimidine-6-carbo xylic acid derivatives are intermediates useful in the production of 7,8-dihydro-2-amino or alkoxy-7-oxo-pyrido[2,3-d]pyrimidine-6-carboxylic acid derivatives which 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.

patent: 3950338 (1976-04-01), Pesson
patent: 3992380 (1976-11-01), Lesher et al.


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