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US 7,119,199 B2Granted
Process for the preparation of pyridopyrimidones
AssigneeScios, Inc.
InventorsSarvajit Chakravarty, Sundeep Dugar, Richland Tester, Aurelia Conte
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Abstract
The present invention is directed to a method for producing a pyridopyrimidone of the formula wherein X is N or CH and R is an aryl, heteroaryl or alkyl group, said method comprising the step of reacting an acid derivative of the formula: wherein X is N or CH; Y is an appropriate leaving group; Z is a halogen, OR1, NHR1, or SR1; and R1 is a lower alkyl; and the amidine derivative is wherein R is an aryl, heteroaryl or alkyl group.
Claims3
A method for producing a pyridopyrimidone of the formula
- wherein X is N or CH and R is an aryl, heteroaryl or alkyl group, said method comprising the step of:
- reacting an acid derivative of the formula:
- wherein X is N or CH;
- Y is an appropriate leaving group;
- Z is a halogen, OR1, NHR1, or SR1;
- and
- R1 is a lower alkyl
- with an amidine derivative of the formula
- where R is defined as above whereby said pyridopyrimidone is produced.
6 more elements
Dependencies are inferred from the claim text.