68594-06-9Relevant academic research and scientific papers
METHOD OF PRODUCING 4-DEMETHOXYDAUNORUBICIN
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, (2012/11/08)
The present invention relates to a method for the synthesis of 4-demethoxydaunorubicin (idarubicin) having the chemical structure of formula (I), which involves the demethylation of 3′-Prot-daunorubicin in the presence of a soft Lewis acid. The method of the present invention does not comprise cleavage of the glycosidic linkage at carbon C7, thus resulting in a faster synthesis cycle and an improved yield of the final product.
METHOD FOR PREPARING 4-DEMETHYLDAUNORUBICIN
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Page/Page column 2, (2008/06/13)
A method of preparing the anthracyclin carminomycin using a starting material comprising daunorubicin. The method comprises reacting daunorubicin or N-protected daunorubicin with soft Lewis acids for the demethylation of the 4-methoxy group, resulting in a reaction mass. The reaction mass is treated with an aqueous solution of a strong organic acid or a mineral acid. After decomposition of the resulting carminomycin and Lewis acids reactive complex, the reaction mass is extracted using a water insoluble organic solvent. As a result, carminomycin is extracted as a base.
14-Esters and 13-Hydrazones of Anthracycline Antibiotics of the Daunorubicin Series: Synthesis and Cytostatic Activity toward Tumor Cells Sensitive or Resistant to Doxorubicin
Povarov, L. S.,Leont'eva, O. V.,Bernacki, R. J.,Olsuf'eva, E. N.,Salimova, E. I.,et al.
, p. 797 - 803 (2007/10/03)
Doxorubicin and 14-hydroxycarminomycin 14-O-hemiadipates and 14-O-hemipimelates (synthesized from 14-bromo derivatives of daunorubicin, carminomycin monosodium adipate, and pimelate) were converted to the corresponding N-trifluoroacetylated compounds. 13-(4-methylpiperazine-1-yl)imino derivatives of the anthracycline antibiotics were also obtained.The cytostatic activity of the compounds synthesized was studied using a panel of human and animal tumor cell lines sensitive or resistant to doxorubicin.N-Trifluoroacetylation of the antibiotics resulted in a decrease in the cytostatic activity.The activity of the water-soluble 13-(4-methylpiperazine-1-yl)imino derivatives is close to that of the corresponding parent antibiotics. - Keywords: anthracycline antibiotics; multidrug resistance
The synthesis of epsilon-rhodomycinone- and carminomycin-11-methyl ethers.
Essery,Doyle
, p. 247 - 249,248,249 (2007/10/11)
The conversion of epsilon-rhodomycinone to its 11-methyl ether via selective hydrolysis of the 4,6,7,11-tetraacetate is described. This series of reactions was used as a model for the conversion of carminomycin to its 11-methyl ether. The anti-tumor activity of the latter compound was less than that of both carminomycin and its 4-methyl ether (daunomycin).
