Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1987-06-15
1990-01-02
Lee, Mary C.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
544242, 548341, 548342, C07D21338
Patent
active
048914290
ABSTRACT:
Compounds of the formula ##STR1## wherein R.sub.2, R.sub.3 and R.sub.4 are independently, hydrogen or methyl; A is 3-pyridinyl which is unsubstituted, or substituted by lower alkyl, phenyl, or naphthyl, are described.
The compounds of the invention are intermediates in the preparation of antiarrhythmic agents.
REFERENCES:
patent: 3646045 (1972-02-01), Berger et al.
patent: 4328029 (1982-05-01), Thomas et al.
patent: 4336059 (1982-06-01), Ziman
patent: 4338119 (1982-07-01), Stetter et al.
patent: 4415587 (1983-11-01), Diamond et al.
Mullin, Jr. John G.
Nakamura Keiji
Tilley Jefferson W.
Watanabe Hiroshi
Boxer Matthew
Gould George M.
Hoffmann-La Roche Inc.
Lee Mary C.
Leon Bernard S.
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