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Class Information
Number: 514/264.11
Name: Drug, bio-affecting and body treating compositions > Designated organic active ingredient containing (doai) > Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., o,s,se or te) or nitrogen as the only ring hetero atoms doai > Hetero ring is six-membered consisting of two nitrogens and four carbon atoms (e.g., pyridazines, etc.) > 1,3-diazines (e.g., pyrimidines, etc.) > Polycyclo ring system having 1,3-diazine as one of the cyclos > Bicyclo ring system having the 1,3-diazine as one of the cyclos > The other cyclo in the bicyclo ring system is a pyridine ring (including hydrogenated) (e.g., pyrido[2,3-d]pyrimidine, etc.) > Nitrogen bonded directly to ring carbon of the 1,3-diazine ring of the bicyclo ring system
Description: Subject matter wherein a ring carbon of the 1,3-diazine ring of the bicyclo ring system is directly bonded to nitrogen.

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
4831037 4 (3H)-oxo-5,6,7,8-tetrahydropyrido-(2,3-d)pyrimidine derivatives May. 16, 1989
4797403 Quinazolinediones and pyridopyrimidinediones Jan. 10, 1989
4684653 Pyrido(2,3-d)pyrimidine derivatives Aug. 4, 1987
4661490 Treatment with dialkoxy pyridopyrimidines Apr. 28, 1987
4621082 Pyridopyrimidines, pharmaceutical compositions and use Nov. 4, 1986
4532241 8,10-Dideazaminopterins Jul. 30, 1985
4512992 Treatment with dialkoxy pyridopyrimidine compounds Apr. 23, 1985
4460591 8,10-Dideazaminopterins Jul. 17, 1984
4372957 Treatment with dialkoxy pyridopyrimidines Feb. 8, 1983
3981999 Fish disease treatment Sep. 21, 1976
3939268 2,4-Diamino substituted pyridol(3,2-d)pyrimidine as antithrombotic agents Feb. 17, 1976

1 2 3 4

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