Abstract: The 3-amino-4-ethylthio-quinoline of the Formula I ##STR1## and pharmaceutically acceptable acid addition salts thereof possess useful therapeutical properties. They exhibit a potent and highly selective anxiolytic and narcosis potentiating effect and are devoid of sedative and anti-convulsive effect. Consequently, the invention relates to pharmaceutical compositions comprising the compound of Formula I or a salt thereof as active agent.The invention also relates to a new and improved process for the preparation of the compound of Formula I.

Abstract: The new compounds of the general Formula I ##STR1## (wherein R.sub.1 stands for C.sub.1-5 alkyl, C.sub.2-5 alkenyl, C.sub.2-5 alkinyl, C.sub.3-7 cycloalkyl or optionally substituted phenyl-(C.sub.1-4 alkyl);R.sub.2 represents hydrogen or C.sub.1-5 alkanoyl;X.sub.1 and X.sub.2 can be identical or different and each stands for hydrogen, halogen, trifluoromethyl or C.sub.1-4 alkoxy;(with the proviso that if R.sub.1 stands for ethyl, at least one of R.sub.2, X.sub.1 and X.sub.2 is different from hydrogen) and pharmaceutically acceptable acid additions salts possess valuable anxiolytic properties devoid of sedative effect and can be used in therapy.The compounds of the general Formula I can be prepared by methods known per se.

Abstract: The invention relates to new thiazolo[4,5-c]quinoline derivatives of the general Formula I ##STR1## and acid addition salts thereof, a process for the preparation of the same and pharmaceutical compositions comprising the said compounds.The substituent definition of the general Formula I is as follows:R stands for hydrogen; a straight or branched chained alkyl group having 2-5 carbon atoms optionally substituted by one or more halogen atom(s); phenyl or phenyl-(lower alkyl) optionally bearing one or more substituent(s) on the phenyl ring;R.sup.1 and R.sup.2 are identical or different and stand for hydrogen, halogen or lower alkyl).The compounds of the general Formula I possess valuable central nervous depressive properties.

Abstract: The selective appetite-regulating substances satietin and satietin-D had up to the present been prepared from human or animal blood serum or plasma by ultrafiltration, gel chromatography, treatment with trichloroacetic acid, affinity chromatography and optionally treatment with a proteolytic enzyme.According to the invention, satietin and satietin-D are obtained in a purified form by using immunoabsorption. Being glycoproteins, both satietin and satietin-D form antibodies (antisatietin and antisatietin-D, respectively) in the living organism and can be isolated from the blood and bound to a gel column. For the preparation of satietin and satietin-D, respectively, the human or animal blood plasma or serum is subjected to ultrafiltration and the ultrafiltrate, containing in addition to satietin and satietin-D other constituents with a molecular weight below 50000 daltons, is contacted with the gel column.

Abstract: It has been found that 2-methyl-thiazolo[4,5-c]quinoline and pharmaceutically acceptable acid addition salts and hydrates thereof possess valuable central nervous depressive properties being different from those of benzodiazepines. The invention relates to pharmaceutical compositions comprising as active ingredient 2-methyl-thiazolo[4,5-c]quinoline of the Formula I ##STR1## or a pharmaceutically acceptable acid addition salt or hydrate thereof.

Abstract: The invention involves isolating a food intake suppressant by subjecting blood serum to ultrafiltration transmitting up to a molecular weight of 30,000 daltons, partially evaporating the filtrate, removing the insoluble part from the concentrate obtained, adding trichloroacetic acid up to a concentration of 5 to 25 weight/volume percent to the liquid phase at a temperature of 0.degree. to 10.degree. C., removing the proteins precipitated, subjecting the obtained solution to chromatography on a gel with a void volume below a molecular weight of 4000 daltons, eluting with a solution of pH 6.0 to 7.0, concentrating the biologically active fractions, chromatographing again on a gel with a void volume below a molecular weight of 4000 daltons, fractionating by elution with water, lyophilizing the active fractions, dissolving the lyophilized fractions in a buffer of pH 8.1 to 8.2, adding trypsin and chymotrypsin to the solution in a substantially identical amount of 0.01 to 0.

Abstract: Described is the method of preparing satietin, a peptide separated from plasma or serum and possessing the effect of inhibiting food intake. Also described is the product satietin.