Gdansk University of Technology

Bs-154 S.p. Zo.o.

Barbara J Stefanska

Edward Borowski

Leonard S Falkowski

Elzbieta Troka

Jerzy J Golik

Andrzej B Jarzebski

Wieslaw Szelejewski

Marcin Cybulski

Malgorzata Wysocka

Joanna Wietrzyk

Jan Zielinski

Pawel Kolodziejczyk

Pawel Punda

Janusz Obukowicz

Maria Bontemps-Gracz

Maria Dzieduszycka

Jan Mazerski

Emilia Cybulska

The invention relates to the new, asymmetrically substituted derivatives of 2,7-dihydro-3H-dibenzo[de,h]cinnoline-3,7-dione and their use as cytostatics exhibiting activity against tumor cells, especially against cells with multidrug resistance (MDR). In particular, the invention concerns derivatives of 2,7-dihydro-3H-dibenzo[de,h]cinnoline-3,7-dione represented by the general formula (I). 

Asymmetrically substituted anthrapyridazone derivatives as cytostatics

The present invention relates to new enamine derivatives of daunorubicin and adriamycin of the formula l: ##STR1## and formula 2: ##STR2## wherein R denotes a hydrogen atom or hydroxyl group. The inventive compounds are useful antineoplastic antibiotics utilized in the treatment of cancer, primarily leukemia. The present derivatives demonstrate a reduction in toxicity, in particular cardiotoxicity, over their parent compounds, while retaining chemotherapeutic properties.

Antineoplastic enamine derivatives of daunorubicin and adriamycin

The invention relates to amides of polyene macrolide antibiotics and their derivatives characterized by the general formula I, ##STR1## where R is the polyene macrolide, R.sub.1 is an alkyl or isoalkyl chain of from one to eighteen carbons, unsubstituted or substituted with a primary or secondary amine; where R.sub.2 is an hydrogen or R.sub.1 or R.sub.1 and R.sub.2 are joined through the nitrogen to form a heterocyclic ring. The method of preparation of these substances according to our invention depends upon the reaction of the polyene macrolide or its derivative in which the carboxylic group is activated; in the environment of an organic solvent or mixture of solvents and in the presence of a substance neutralizing the acid; with a compound containing an amino group; leaving upon completion of the reaction; and precipitation of the product from the reaction mixture, by addition of ethyl ether or a mixture of ethyl ether with hydrocarbons; isolation and purification of the product by means of known methods.

Amides of amphoteric polyene macrolide antibiotics

A process for production of esters of antibiotics from the group of polyene macrolides and of N-substituted derivatives thereof, having the general Formula 1, wherein R denotes the radical of antibiotic or of its R-COOR, I N-substituted derivative, and R.sub.1 denotes an alkyl with the chain length of C.sub.1 through C.sub.5, or an aryl, consisting therein that an antibiotic from the group of polyene macrolides or its N-substituted derivative is dissolved or suspended in alcohol and/or neutral organic solvent, or in a mixture of organic solvents, in presence of dicyclohexylcarbodiimide and/or hydrocybenzotriazole, the whole is allowed to stand at room temperature, or at temperature elevated to 40.degree. C., and then the obtained product is isolated from the reaction medium after known methods.

Method of preparation of esters of antibiotics selected from the group

The invention relates to the method of preparation of N-glycosyl compounds of anthracyclin antibiotics of formula I ##STR1## where R.sub.1 is the hydrogen atom or hydroxylic group, whereas R.sub.2 is the residue of a mono- or oligosaccharide of a series of aldeses and ketoses or the derivatives reacted with the amine group of the antibiotic. The invention depends upon the reaction of the antibiotic, which is converted into the form of base, in an organic solvent by treatment with molar excess of the saccharide or its derivative at temperature from 20.degree. up to 60.degree. C., for several hours, in the presence of a catalyst, under continuous stirring. The product is precipitated from the reaction mixture upon the addition of a nonpolar solvent and subsequently is purified by known methods.

N-Glycosyl derivatives of anthracycline antibiotics and the method of

Inorganic salts of trimethylammonium derivatives of polyene macrolides, particularly the inorganic salts of methyl esters of these derivatives having the general formula: ##STR1## wherein R is the residue of a polyene macrolide and X is an anion of a salt selected from the group consisting of methylsulphate, sulphate, chloride, phosphate and acetate. The preparation of salts of formula (I) or formula (II) is also disclosed.

Water-soluble salts of trimethylammonium derivatives of polyene

Growing community of inventors

Gdansk-Oliwa, Poland

Barbara J Stefanska