Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system
Patent
1984-06-13
1986-05-06
Daus, Donald G.
Organic compounds -- part of the class 532-570 series
Organic compounds
Four or more ring nitrogens in the bicyclo ring system
544 33G, C07D47504, A61K 31505
Patent
active
045873402
ABSTRACT:
This invention provides the intermediates of formula II-A below, useful to make the pterin compounds of formula I below. The pterin compounds are used in human and veterinary medicine. ##STR1## wherein R represents a lower alkyl of 1 to 8 carbons.
REFERENCES:
patent: 4094874 (1978-06-01), Catalucci
patent: 4156725 (1979-05-01), Wood
Bigham Eric C.
Nichol Charles A.
Reinhard, Jr. John F.
Smith Gary K.
Benson Robert
Brown Donald
Burroughs Wellcome Co.
Daus Donald G.
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