88877-00-3Relevant academic research and scientific papers
5-Alkyl-1,6-naphthyridin-2(1H)-ones and cardiotonic use thereof
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, (2008/06/13)
1-R"-3-Q-4-R'-5-R-1,6-naphthyridin-2(1H)-ones (I) or salts thereof, where R is lower-alkyl, R' is hydrogen or methyl, R" is hydrogen or lower-alkyl, and Q is hydrogen, hydroxy, amino, cyano, carbamyl, carboxy or aminocarbamyl, are useful as cardiotonic ag
5-(Hydroxyalkyl or alkanoyloxymethyl)-1,6-naphthyridin-2(1H)-one and cardiotonic use thereof
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, (2008/06/13)
4-R'-5-Q-1,6-naphthyridin-2(1H)-ones (I), where R' is hydrogen or methyl and Q is hydroxymethyl, 1-hydroxyethyl alkanoyloxymethyl or 1-alkanoyloxyethyl, are produced by first reacting 4-R'-5-acetyl(or n-propanoyl)-6-[2-(di-lower-alkylamino]-2(1H)-pyridinone [III] with hydroxylamine or salt thereof to produce 4-R'-5-Q'-1,6-naphthyridin-2(1H)-one-6-oxide (II), where R' is defined as above and Q' is methyl or ethyl; next reacting II with an alkanoic anhydride to produce I where Q is alkanoyloxymethyl or 1-alkanoyloxyethyl; and, then hydrolyzing said alkanoyloxymethyl or -ethyl compound to produce I where Q is hydroxymethyl or 1-hydroxyethyl. Also shown is the cardiotonic use of II and I where Q is hydroxymethyl, 1-hydroxyethyl or alkanoyloxymethyl.
Certain 2-(1H)-pyridinones cardiotonic compositions containing same and method of using same
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, (2008/06/13)
1-R"-3-Q-4-R'-5-R-1,6-naphthyridin-2(1H)-ones (I) or salts thereof, where R is lower-alkyl, R' is hydrogen or methyl, R" is hydrogen or lower-alkyl, and Q is hydrogen, hydroxy, amino, cyano, carbamyl, carboxy or aminocarbamyl, are useful as cardiotonic ag
