## Abstract The analgetic activity of 1,3,4‐trimethyl‐5‐cyano‐pyridazone‐(6) (I), a compound chemically similar to the pyridine‐alkaloid ricinine is discussed. Many similar derivatives have been prepared, but only pyridazones having in position 5 a cyano, in 3 and 4 alkyl, and in 1 a methyl group h
Heilmittelchemische Studien in der heterocyclischen Reihe. 17. Mitteilung. 4,7-Phenanthrolinchinon-Derivate mit amoebicider Wirkung
✍ Scribed by P. Schmidt; J. Druey
- Publisher
- John Wiley and Sons
- Year
- 1957
- Tongue
- German
- Weight
- 359 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
The amebicidal activity of the phenanthroline quinones published earlier^2^) and of their derivates described in this paper is discussed. The highest activity was found with 4,7‐phenanthrolino‐5, 6‐ quinone 1 and its monosemicarbazone 3, which are also active in man. Further derivatives of 1 are described.
📜 SIMILAR VOLUMES
## Abstract The synthesis of 4‐hydrazino‐benzo‐1,2,3‐thiadiazine 1,1‐dioxides is described. Chemical reactions and properties of these compounds are discussed. Some of the derivatives show hypotensive as well as diuretic activity.
## Abstract It has been shown that the reaction between kojic acid and hydrazine hydrate gives rise to two main products: 3,6‐dihydroxymethyl‐4‐oxo‐1,4‐dihydro‐pyridazine, and the hydrazone of 3‐hydroxymethyl‐pyrazol‐5‐yl‐hydroxyacetaldehyde, the structures of which were proved unambiguously.
Bei der Verwendung von 2,2,5,5-Tetramethylimidazolidinthion-(4) als Zwischenprodukt fur die Synthese von pharmakologisch wirksamen Verbindungen sind wir auf eine unerwartete Reaktion gestossen, uber die wir im folgenden berichten mochten. ## Zum ersten Male haben GATEWOOD & JOHN SON^) I erhalten,
## Abstract Condensation of 3‐amino‐4‐carbethoxy‐pyrazoles with nitriles led to a new synthesis of 6‐C‐substituted pyrazolo[3,4‐d]pyrimidines and 6‐amino‐pyrazolo‐[3,4‐b]pyridines. The structure of the new derivatives was established by independent syntheses. The pyrazolo‐pyrimidines can be cleaved
## Abstract 1‐Methyl‐3‐cyano‐l, 6‐dihydro‐pyridine (III) was allowed to react under mild conditions with maleic anhydride. After acid hydrolysis of the resulting adduct IV, followed by esterification of the dicarboxylic acid V, 2‐methyl‐5,6‐dicarbomethoxy‐7‐cyano‐2‐aza‐bicyclo[2.2.2]octene‐(7) (VI)