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Synthesis and properties of amides of 1-benzyl-3-methyl- and 1-butyl-3-phenyl-7-methyl-4-oxo-2-thioxo (2,4-dioxo) -1,2,3,4-tetrahydropyrido-[2,3-d]pyrimidine-6-carboxy lic acids

Sladowska, H.; Zawisza, T.

Il Farmaco; Edizione Scientifica 41(12): 954-963

1986

ISSN/ISBN: 0430-0920
PMID: 3556569
Document Number: 283172
Amides of 1-benzyl-3,7-dimethyl-4-oxo-2-thioxo-1,2,3,4- tetrahydropyrido[2,3]pyrimidine-6-carboxylic acid were obtained by the condensation of ammonia, primary and secondary cyclic amines with the corresponding acid chloride. As by - products amides of 1-benzyl-3,7-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrido[2,3-d]pyr imidine-6- carboxylic acid were isolated as a result of desulfuration. The same reaction performed with chloride of 1-butyl-7-methyl-3-phenyl-4-oxo-2-thioxo-1,2,3,4-tetrahydropyri do[2,3- d]pyrimidine-6-carboxylic acid gave mainly the corresponding 2,4-dioxo-amides.

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