2H-Pyrimido[4,5-d][1,3]oxazine-2,4(1H)-dione derivatives

Details 2H-Pyrimido[4,5-d][1,3]oxazine-2,4(1H)-dione derivatives 2H-Pyrimido[4,5-d][1,3]oxazine-2,4(1H)-dione derivatives

1979-10-29

1981-03-10

Randolph, John D.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

C07D49804

Patent

active

042555680

ABSTRACT:
The disclosed 2H-pyrimido[4,5-d][1,3]oxazine-2,4(1H)-dione derivatives are intermediates useful in the production of 7,8-dihydro-2,5,8-trisubstituted-7-oxo-pyrido[2,3-d]pyrimidine-6-carboxyli c acid derivatives which are gastric anti-secretory agents and anti-allergic agents.

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patent: 3887550 (1975-06-01), Beckwith
Britikova et al., Chem. Abst., vol. 78, abst. 136214r (1973), (abst. of Britikova et al., Khim. Geterotsikl. Soedin 1973, pp. 270-272 (Russ).
Britikova et al., Chem. Abst., vol. 86, abst. 16699W (1977) (abst. of U.S.S.R. 525,687).
Konshin et al., Chem. Abst., vol. 86, abst. 16700q (1977) (abst. of U.S.S.R. 525,686).
Britikova et al., Chem. Abst., vol. 87, abst. 84935r (1977) (abst. of Khim. Geterotsikl. Soedin, 1977, pp. 517-520 (Russ.).

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