摘要:
The invention relates to new cyclic imines of the general formula (I), ##STR1## wherein A represents carbonyl or hydroxymethylene,B is oxygen or imino,R stands for hydrogen or lower alkyl,X.sub.1 and X.sub.2 may be the same or different and represent hydrogen, halogen, lower alkyl or alkoxy, amino or nitro,n is 6 or 7, andm is 0 or 1,and pharmaceutically acceptable acid addition salts and quaternary salts thereof. The invention relates further to a process for the preparation of said compounds, to pharmaceutical compositions containing said compounds as the active ingredient and to a process for the preparation of said pharmaceutical compositions.The cyclic imine derivatives of the invention possess valuable antiarrhythmic properties and can be used to advantage in the treatment of cardiovascular diseases.
摘要:
The invention relates to the separation of the geometrical isomers of cyclopropane carboxylic acids of formula (I) ##STR1## wherein R represents alkyl having 1 to 4 carbon atoms or halogen.
摘要:
The invention relates to a new process for separating the four stereoisomers of the cyclopropanecarboxylic acids of the formula ##STR1## wherein R stands for a methyl group or a halogen atom.The process comprisesreacting a salt formed with an alkali hydroxide or an alkali carbonate of dl-cis-trans-2,2-dimethyl-3-(2,2-disubstituted vinyl)-cyclopropanecarboxylic acids containing the isomers in any ratio or the pure dl-cis and dl-trans-2,2-dimethyl-3-(2,2-disubstituted vinyl)-cyclopropanecarboxylic acids prepared therefrom by the means of a selective dissolution with aromatic and aliphatic hydrocarbon solvents (suitably with benzene, extraction petroleum ether, n-hexane) with N-benzyl-2-aminobutanol enantiomers or with the hydrochlorides thereof in an aqueous medium or aqueous acetone medium, obtaining the crystalline diastereomeric salt from the solution by filtration, decomposing said salt by using a mineral acid, then separating the thus obtained optically active cyclopropanecarboxylic acidand obtaining the other isomer or other mixture of isomers from the filtrate of the said diastereomeric salt similarly after acidifying by a mineral acid, if desired, purifying the said optically active 2,2-di-methyl-3-(2,2-disubstituted vinyl)-cyclopropane-carboxylic acid isomers obtained by the above-mentioned procedure by a selective precipitation and recovering the resolving agent.
摘要:
The invention relates to a novel process for preparing 2-guanidinomethyl-perhydroazocine-sulfate of formula I ##STR1## comprising the steps of catalytically reducing the 2-nitromethylene-perhydroazocine of formula IV ##STR2## in solution in acetone at a temperature of 20.degree. to 50.degree. C, treating the separated reaction product with an aqueous mineral acid and then reacting it with S-methyl-isothiocarbamid-sulfate.The process gives the desired end-product of formula I also on industrial scales.
摘要:
According to the invention there are provided a quail egg based stabilized foam composition for cosmetic purposes comprising 5-75% by weight of quail egg, 20-80% by weight of one or more carrier/s/, 0-40% by weight of one or more additive/s/, 0.1-1% by weight of one or more antiseptic agent/s/ and 1-3% by weight of one or more sulfonamide/s/ potentiated with 2,4-diamino-5-/3',4',5'-trimethoxybenzyl/pyrimidine in a weight ratio of /1:5/-/5:1/, furthermore 5-20% by weight of a propellant.The compositions of the present invention can be stored for a very long period of time without decomposition due to their excellent stability.