Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Bacterium or component thereof or substance produced by said...
Patent
1977-11-23
1979-09-11
Berch, Mark L.
Drug, bio-affecting and body treating compositions
Antigen, epitope, or other immunospecific immunoeffector
Bacterium or component thereof or substance produced by said...
544247, 544250, 548306, C07D48704, C07D49114, A61K 31505
Patent
active
041675690
ABSTRACT:
The invention concerns 3,4-dihydropyrimido [1,2-a]benzimidazole derivatives bearing one or more substituents at positions 6, 7, 8 or 9; processes for their preparation and manufacture; and pharmaceutical compositions thereof. The compounds inhibit the aggregation of blood-platelets and may be used in vivo, in the treatment or prophylaxis of thrombosis or occlusive vascular disease, or in vitro, in helping to stabilize preparations of blood platelets. Representative compounds of the invention are 7- and 8- acetyl-3,4-dihydropyrimido[1,2-a]benzimidazol-2(1H)-one.
REFERENCES:
patent: 3468888 (1969-09-01), Chow
patent: 3988340 (1976-10-01), Partyka et al.
patent: 4109087 (1978-08-01), Denzel et al.
patent: 4109091 (1978-08-01), Denzel et al.
Chow et al., Chem. Abs. 78, 111242k (1973).
Berch Mark L.
Imperial Chemical Industries Limited
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