Substituted 1,3,4-thiadiazolo[3,2-A]pyrimidines and compositions

Details Substituted 1,3,4-thiadiazolo[3,2-A]pyrimidines and compositions Substituted 1,3,4-thiadiazolo[3,2-A]pyrimidines and compositions

1983-01-19

1985-08-27

Daus, Donald G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

548136, C07D23900, A61K 31495

Patent

active

045379629

ABSTRACT:
Compounds of the formula (I) ##STR1## wherein R.sub.1 is

REFERENCES:
patent: 4341780 (1982-07-01), Doria et al.
patent: 4428952 (1984-01-01), Doria et al.
patent: 4444773 (1984-04-01), Doria et al.
Chem. Abst., vol. 79, 1973, p. 458, 32002z, Okabe.
Tsuji et al., Chem. Pharm. Bull., 19, 2530-2533, 1971.
Burger, Medicinal Chem., 2nd edition, pp. 42, 43.
Chemical Abstracts, vol. 76, 59562g, Tsuji et al., (1972).
Farm Doc DT 2712932 Grunenthal (1978).
Farm Doc Belgian 855334 Grunenthal (1977).
Patents Abstracts of Japan, vol. 4, No. 174, Dec. 2, 1980, (Japanese Pat. No. 55,115889).

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