Abstract:
Novel 6-phenylpurine 9- beta -D-ribonucleosides with antineoplastic activity of general formula (I), wherein R is H, methyl, fluoro, chloro or alkoxy (C1-C2) group, R is H, methyl or fluoro group, and R is H, fluoro or methoxy group. Pharmaceutical compositions containing the compounds of the invention as active components are also described. Further the use of compounds of general formula (I) according to Claim 1, or their combinations, for preparing pharmaceutical compositions for the treatment of cancer and leukemia is described.
Abstract:
Described are new helquats of general.formula I, their precursors of general formula II and III and methods of their preparation from compound of. general formula IV, where symbols S12, S1`2`, T23, T2`3` , R1 , R 2, X- have the meaning defined in description and claims. According to this invention it is possible e.g. from one non-symmetric compound of general formula IV (tether S1,2 is different from tether S1`2`) and 10 different alkylation agents to prepare 100 various helquats of general1, formula I and 90 various helquats without repetition of the alkylation agent. From symmetric compound of general formula IV (tether S1,2 is the same as tether S1`2` ) and 10 different alkylation agents it is possible to prepare 55 various helquats of general formula I and 45 various helquats without repetition of the alkylation agent.
Abstract:
This invention deals with a method of increasing the yield of photosynthetic assimilation of carbon dioxide in plants by means of application of agents that increase the carboxylase activity of the enzyme ribulose 1,5-bisphosphate carboxylase/oxygenase (RuBisCO, EC 4.1.1.39). It leads as to increase of green mass of agricultural products as decrease of carbon dioxide in atmosphere.
Abstract:
This invention relates to a method of manufacturing 1-(2-deoxy-alpha-D-erythro-pentofuranosyl)-5-azacytosine by the treatment of protected alkyl or aralkyl 2-deoxy-D-erythro-pentofuranoside with silylated 5-azacytosine in the presence of Lewis acid and subsequent removal the protecting groups.
Abstract:
This invention relates to a method of manufacturing 1-(2-deoxy-alpha-D-erythro-pentofuranosyl)-5-azacytosine by the treatment of protected alkyl or aralkyl 2-deoxy-D-erythro-pentofuranoside with silylated 5-azacytosine in the presence of Lewis acid and subsequent removal the protecting groups.
Abstract:
This invention involves four novel peptides of the formulas I, II, III a IV isolated from natural sources and their synthetic analogs of general formula V and VI, where R 1 represents acyl, alkyl or unprotected amino group, R 2 represents amid, substituted amid, unprotected carboxylic group or ester, Xaa represents, independently from each other, proteinogenic amino acid, D-amino acid, non-standard amino acid or amino acid with the side chain modification, n means position of the amino acid replacement and m means the number of the replacements in the peptide chain, and their applications as antimicrobial, antiviral, antifungal, antiparasitic and anticancer compounds. Therefore, they are practical for the production of medication for the treatment of microbial, parasitic and fungal diseases and for the cancer treatment. Formulas for summary: H-Gly-Phe-Leu-Ser-Ile-Leu-Lys-Lys-Val-Leu-Pro-Lys-Val-Met-Ala-His-Met-Lys-NH2 (I) H-VaI-Asn-Trp-Lys-Lys-VaI-Leu-GIy-Lys-IIe-IIe-Lys-VaI-AIa-Lys-NH2 (II) H-VaI-Asn-Trp-Lys-Lys-IIe-Leu-GIy-Lys-IIe-IIe-Lys-VaI-AIa-Lys-NH2 (III) H-Val-Asn-Trp-Lys-Lys-Ile-Leu-Gly-Lys-Ile-Ile-Lys-Val-Val-Lys-NH2 (IV) R1-[Xaan]m -Gly-Phe-Leu-Ser-Ile-Leu-Lys-Lys-Val-Leu-Pro-Lys-Val-Met-Ala-His-Met-Lys-R2 (V) R1-[Xaan]m-Val-Asn-Trp-Lys-Lys-Ile-Leu-Gly-Lys-Ile-Ile-Lys-Val-Val-Lys-R2 (VI)
Abstract:
The present invention provides novel HIV protease inhibitors containing substituted borane, carborane or metallacarborane clusters with 6 to 12 boron atoms in each cluster, wherein the charge of each borane, carborane or metallacarborane cluster is 0, -1 or -2; the number of borane, carborane or metallacarborane clusters in the inhibitor molecule is 1 to 9, and the carborane clusters in metallacarborane inhibitors are coordinated to transition metal atom, selected from the group containing cobalt, iron, nickel and ruthenium. In the cluster can be present heteroatoms as nitrogen, phosphorus, silicon, germanium, tin and sulphur. Pharmaceutical compositions containing these inhibitors and their use, both in vitro and in vivo. They are characterized by high effectivity and stability.
Abstract:
The present invention relates to natural brassinosteroids of general formula (I), wherein R is CH2 or O-CH2 group, R2 is hydrogen or hydroxyl, R3 is hydroxyl, R24 is alkyl or alkenyl, which are selected from the group consisting of methyl, ethyl, propyl, isopropyl, methylen, ethylen and propylen, and R25 is alkyl selected from the group consisting of methyl and ethyl, and a pharmaceutically acceptable salt thereof, for use for treating hyperproliferation, treating proliferative diseases and reducing adverse effects of steroid dysfunction in mammals. The present invention also provides methods capable to arrest of the cell cycle by natural brassinosteroids resulting in apoptotic changes in cancer cells. More specifically, the present invention relates to use for treatment of the adverse effects of hyperproliferation on mammalian cells in vitro and in vivo, especially treatment of hyperproliferative diseases in mammals by administering compositions containing natural brassinosteroids. This invention also describes new use for treating consisting in a new therapeutic way for modifying cell viability of human breast and prostate cancer cells.
Abstract:
A fusion protein is provided in cells in culture that comprises (i) an autoproteolytic precursor of a cytotoxic protease and (ii) a reporter protein, which reporter protein provides a quantitative signal indicative of amount of reporter protein present within the cells, allowing for assays to identify inhibitors of the protease and potential therapeutics useful in targeting pathogens, especially viruses such as HIV.