Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Bacterium or component thereof or substance produced by said...
Patent
1981-10-02
1983-07-05
Milestone, Norma S.
Drug, bio-affecting and body treating compositions
Antigen, epitope, or other immunospecific immunoeffector
Bacterium or component thereof or substance produced by said...
546118, C07D48704, A61K 3144
Patent
active
043918115
ABSTRACT:
2-(NB)-3-R-6-PY-5-Q-3H-imidazo[4,5-b]pyridines (I) and salts, useful as cardiotonics, where NB is amino or dimethylamino, R is lower-alkyl, Q is hydrogen or lower-alkyl, and PY is 4- or 3-pyridinyl or 4- or 3-pyridinyl having one or two lower-alkyl substituents, are prepared by reacting a 2-RNH-3-amino-5-PY-6-Q-pyridine with a di-(lower-alkyl) 2-methylthiopseudourea-1,3-dicarboxylate to produce 2-carbo(lower-alkoxy)amino-3-R-6-PY-5-Q-3H-imidazo[4,5-b] pyridine and hydrolyzing the latter to produce I where NB is amino and by reacting a 2-RNH-3-amino-5-PY-6-Q-pyridine with dichloromethylene-N,N-dimethylammonium chloride to produce I where NB is dimethylamino. Cardiotonic use of I is disclosed and claimed.
REFERENCES:
patent: 3920669 (1975-11-01), Kristinsson et al.
patent: 3954438 (1976-05-01), Hunter et al.
Chemical Abstracts, 89:43341s (1978).
Baldwin et al., [J. Med. Chem. 20, 1189-1193 (1977)].
Lesher George Y.
Opalka, Jr. Chester J.
Page Donald F.
Bair Robert K.
Dupont Paul
Milestone Norma S.
Sterling Drug Inc.
Wyatt B. Woodrow
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