Bayer Aktiengesellschaft

Bayer Aktiengsellschaft

Anno De Jong

Martin Scheer

Friedrich Berschauer

Hans Lindel

Erwin Bischoff

Hartwig Muller

Klaus Frobel

Olga Salcher

Werner Hallenbach

Axel Ingendoh

Jurgen Stoltefuss

Horst Boshagen

Gerd Hanssler

Wilhelm Stendel

Bernhard Homeyer

Paul Reinecke

Benedikt Becker

Peter Stadler

Oswald Lockhoff

The present invention relates to the use of microbiologically prepared compounds and their mixtures, which are called efomycins, as performance promoters in farm animals and processes for their preparation, and furthermore new efomycins and their mixtures as new chemical compounds. The invention also relates to microorganisms which can be used for the preparation of the efomycins and their mixtures.

Efomycins as performance promoters in animals

An animal growth promoter, efomycin G, is obtained by culturing Streptomycetes strain BS 1261. Efomycin G has the following properties:

Efomycin G and it's use as yield promoter in animals

##STR1## wherein R.sup.1 -R.sup.8 and n are as defined herein.

Arylethanolhydroxylamines and their use for promoting yield

The growth of livestock is promoted by the new compounds of the formula ##STR1## in which R.sup.1 represents hydrogen, alkyl, halogen, halogenoalkyl, hydroxyl, cyano, alkoxycarbonyl, aminocarbonyl, mono- and dialkylaminocarbonyl, alkoxy, halogenoalkoxy, halogenoalkylthio or NHSO.sub.2 -alkyl,

Heteroarylethylamine as production promoters in livestock

Aryl ethanol-hydroxylamines of the formula ##STR1## in which Ar represents aryl or heteroaryl, each of which can optionally be substituted, and

Arylethanol-hydroxylamines for promotion of livestock production

The growth of livestock is promoted by the novel arylethanolamines of the formula ##STR1## in which R.sup.1 represents cyano,

Novel arylethanolamines for promoting livestock production

A method for promoting production of useful livestock comprising administering to such livestock an amount effective therefor of a monosilylated aminopheylethylamine derivative of the formula ##STR1## in which X and Y are identical or different and represent hydrogen or CN,

Promoting production of useful livestock with silylated

Promoting the growth of animals with a novel compound, named annomycin, by cultivation of Streptomyces strain BS 572, DSM 3817.

Microbiological production of livestock growth-promoting agent

Novel thienooxazines of the formula ##STR1## in which R.sup.1 and R.sup.2, together with the adjacent C atoms, represent an optionally substituted thiophene ring,

Thienooxazinones, processes for their preparation, and their use as

Growth of animals is promoted by inclusion in their feed of compounds of the formula ##STR1## in which Z is a glycosyl radical bonded via the anomeric carbon atom,

N-glycosylated carboxamide derivatives as growth-promoters in livestock

Substituted isoxazolidines of the formula ##STR1## in which R.sup.1 represents optionally substituted alkyl, cycloalkyl, aralkyl, aryl or heteroaryl or radicals of the formula --COR.sup.4,

Biologically active agents containing substituted isoxazolidines

A novel antibiotic for combating bacteria and promoting animal growth is obtained by cultivating Streptomyces strain BA 9.

Antibiotic for animal feeds

Monosilylated aminophenylethylamine derivative of the formula ##STR1## in which X and Y each independently is hydrogen or halogen,

Growing community of inventors

Wuppertal, Germany

Anno De Jong