Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-12-23
1976-12-21
Jiles, Henry R.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
2602475DP, 260250AC, 424250, 4242484, 42424857, C07D47104
Patent
active
039988228
ABSTRACT:
Pyrido (3,4-d) pyridazine derivatives are provided herein of the formula: ##STR1## wherein R.sub.1 is hydrogen or an alkyl group of 1 to 4 carbon atoms; R.sub.2 is a substituted or unsubstituted phenyl, naphthyl, furyl or pyridyl, the number of the substituents being one of two, the substituents being those selected from the group consisting of lower alkoxy groups of 1 to 3 carbon atoms, lower alkyl groups of 1 to 3 carbon atoms, halogens and nitros; R.sub.3 is hydrogen or a lower alkoxy group of 1 to 4 carbon atoms; and R.sub.4 is a substituted or unsubstituted morpholino, piperidino or pyrrolidino, the substituents being one or two, the substituents being those selected from the group consisting of methyl and ethyl groups, and at least one of the residue R.sub.2 and the residue R.sub.4 is substituted by one or two substituents, and a pharmaceutically acceptable salt thereof. The compounds of the present disclosure have effective and strong diuretic action and exhibit low toxicity characteristics.
REFERENCES:
patent: 3948908 (1976-04-01), Yurugi et al.
Yurugi et al., "Chem. Abstracts", vol. 79 (1973), No. 78830w.
Yurugi et al., "Chem. Abstracts", vol. 82 (1975), No. 4281h.
Oka et al., "Chem. Abstracts", vol. 81 (1974), No. 63651f.
Kikuchi Shintaro
Yurugi Shojiro
Jiles Henry R.
Ramsuer R. W.
Takeda Chemical Industries Ltd.
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