Abstract: Salmycins, a process for their preparation and their use as a pharmaceutical Compounds of formula I, ##STR1## wherein R denotes .dbd.NOH (a), .dbd.O (b); --OH and --H (c), --NH.sub.2 and --H (d) or .dbd.N--O--R'(e);R' denotes phenyl or a branched or unbranched alkyl with 1 to 10 carbon atoms,R" denotes H, alkyl, hydroxy-alkyl and amino-alkyl, as well as the chemical equivalents and physiologically acceptable salts thereof. The salmycins and their derivatives are used as a pharmaceutical.

Abstract: Compounds 31668P and 31668U, a process for their production and their use.Compound 31668P and compound 31668U with the formulae ##STR1## have an antibiotic and an antitumor action.

Abstract: Balhimycin, a compound of the molecular formula C.sub.66 H.sub.73 Cl.sub.2 N.sub.9 O.sub.24, is a novel Glycopeptide antibiotic and has the following structure (SEQ. ID. No.

Abstract: Deoxymulundocandin, a compound of the formula I (SEQ. ID NO: 1) ##STR1## has an antiyeast, an antifungal and an immunomodulatory action.

Abstract: The invention relates to new biologically active glycopeptides of the general formulaSacch--A--B--Rin which Sacch represents a monosaccharide residue with, where appropriate, the OH groups being partially or completely substituted,A represents the residue of a neutral L- or D-amino acid or --if B is absent--represents the residue of a neutral D-amino acid,B is absent or represents the residue of a neutral L- or D-amino acid or of an optionally .omega.-substituted bi-functional acidic or basic L- or D-amino acid, and R represents hydroxyl, (C.sub.1 -C.sub.8)-alkoxy, an amino radical which is optionally substituted by one or two identical or different radicals from the series comprising (C.sub.1 -C.sub.8)-alkyl, (C.sub.5 -C.sub.8)-cycloalkyl, (C.sub.5 -C.sub.8)-heteroalkyl or (C.sub.5 -C.sub.8)-heteroaryl, or another acid derivative. These compounds have enkephalinase-inhibiting properties and can thus be used, for example, as analgesics in human and veterinary medicine.

Abstract: The novel compounds of formulas I and II ##STR1## have an antibiotic activity.

Abstract: A process for the preparation of tripeptides of the general formula IU-A-B-C-OH Iin which U denotes hydrogen or a urethane protective group and A, B and C denote amino acids, by reaction of a compound of the general formula IIU'-B-OH IIin which U' is a urethane protective group which can be eliminated by hydrogenolysis, with a compound of the general formula IIIH-C-OR IIIin which R denotes alkyl, by the PPA method, elimination of U', and reacting the resulting compound of the formula IVH-B-C-OR IVwith a compound of the formula VU-A-OH Vin the presence of propylphosphonic anhydride, and finally eliminating R enzymatically.

Abstract: Process for the preparation of thiophene derivatives and also new dihydrothiophene 1-oxides.Thiophene derivatives having an--optionally substituted--amino group on the thiophene ring are prepared by dehydrogenating dihydrothiophenes, substituted in a manner identical to that of the desired thiophene derivatives, by means of H.sub.2 O.sub.2, the dihydrothiophenes being reacted with H.sub.2 O.sub.2 in a first reaction stage in a neutral medium to give the corresponding sulfoxides, which are then rearranged into the thiophene derivatives by means of acid in the second reaction stage.The dihydrothiophene 1-oxides formed as intermediates in this reaction are new compounds. Like the thiophene derivatives formed from them by rearrangement with acid, they are intermediates, mainly in the sector of plant protection agents and pharmaceuticals.

Abstract: Alisamycin, a compound of the formula I ##STR1## has an antibiotic, antitumor and antiparasitic action.

Abstract: A new antibiotic, aranorosin, a microbiological process for the preparation thereof, and the use thereof as a pharmaceutical.Aranorosin, a compound of the formula ##STR1## can be prepared with the aid of the fungus culture Y-30499 (DSM 4151). Aranorosin has an antibiotic action as well as an action against malignant tumors.

Abstract: Mersacidin, a cyclic peptide of the formula I ##STR1## has antibiotic activity.

Abstract: Salbostatin, a compound of the formula I ##STR1## acts as a glycosidase inhibitor and is suitable for use in pharmacy and in plant protection.

Abstract: The present invention relates to anthracycline derivatives of the formula I ##STR1## in which at least one of the two substitutents R.sub.1 and R.sub.2 represents an N-oxidized sugar or an N-oxidized sugar combination, and a chemical process for the preparation of these compounds and their use as medicaments for the treatment of malignant tumors.

Abstract: Fumifungin, a compound of the formula ##STR1## can be isolated from the culture broth of fungus culture No. Y-83,0405 (DSM 4152), and has bactericidal and fungicidal properties.

Abstract: Oxirane-pseudooligosaccharides of the formula I ##STR1## in which z is zero or 1, their physiologically acceptable salts with acids, a process for their preparation, pharmaceutical preparations, and their use are described. The compounds have an .alpha.-glucosidase-inhibiting action.

Abstract: The present invention relates to the macrolide antibiotic swalpamycin, to a microbiological process for its preparation, to a new microorganism strain Streptomyces species, and to the use of swalpamycin as a medicinal agent for the treatment of infections caused by bacteria, mycoplasmas and Actinomycetes.

Abstract: The present invention relates to the compound naphthomycin H of the formula I ##STR1## and to a microbiological process for its preparation. The compound is active against Gram-positive bacteria and fungi and can be used as an antibiotic.

Abstract: The present invention relates to anthracyclin derivatives of the formula I ##STR1## in which R.sub.1 and R.sub.2 are identical or different and represent the sugar residue Roa (L--rhodosamine) of the formula ##STR2## or the sugar combination Roa--dF.dbd.CinB (dF=2-deoxy-L-fucose; CinB.dbd.L-cinerulose B) of the formula ##STR3## The invention furthermore relates to a process for the preparation of the above compounds of the formula I, and to their use as cytostatic agents.

Abstract: The present invention relates to the micro-organism Streptomyces purpurascens (DSM 2658), its mutants and variants, a process for the preparation of anthracycline derivatives by fermentation of these cultures and to the anthracycline derivatives themselves. The new compounds are distinguished by antibacterial activity and, in addition, they act against various types of tumors.

Abstract: In the ring chlorination of toluene, a particularly high proportion of p-chlorotoluene is obtained by using in addition to the customary Lewis acid catalysts as cocatalyst a chlorination product of 2,8-dimethylphenoxathiin which comprises in the main 1,3,7,9-tetrachloro-2,8-dimethylphenoxathiin of the formula ##STR1##