Patents Assigned to Ardenia Investments Ltd.
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Patent number: 10322996Abstract: A method for producing derivatives of N-retinoylaminoalkane sulfonic acid, the method comprising providing retinoic acid, chloroformate, aminoalkanesulfonic acid selected from the group consisting of cysteic acid and alkyl ester thereof, cysteinesulfinic acid and alkyl ester thereof, homocysteic acid and alkyl ester thereof, homocysteinesulfinic acid and alkyl esters thereof, taurine and derivatives thereof, and an organic solvent, and a base, mixing said components under substantial absence of oxidizing compounds thereby forming a reaction mixture comprising a liquid phase, wherein the liquid phase is one phase and the derivatives of N-retinoylaminoalkane sulfonic acid are formed in said liquid phase.Type: GrantFiled: October 31, 2018Date of Patent: June 18, 2019Assignee: ARDENIA INVESTMENTS, LTDInventors: Dzianis Babrou, Maryna Budnikava, Mikael Björklund, Julian Aleksov
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Patent number: 10138204Abstract: A method for producing derivatives of N-retinoylaminoalkane sulfonic acid, the method comprising providing retinoic acid, chloroformate, aminoalkanesulfonic acid selected from the group consisting of cysteic acid and alkyl ester thereof, cysteinesulfinic acid and alkyl ester thereof, homocysteic acid and alkyl ester thereof, homocysteinesulfinic acid and alkyl esters thereof, taurine and derivatives thereof, and an organic solvent, and a base, mixing said components under substantial absence of oxidizing compounds thereby forming a reaction mixture comprising a liquid phase, wherein the liquid phase is one phase and the derivatives of N-retinoylaminoalkane sulfonic acid are formed in said liquid phase.Type: GrantFiled: June 8, 2018Date of Patent: November 27, 2018Assignee: ARDENIA INVESTMENTS, LTDInventors: Dzianis Babrou, Maryna Budnikava, Mikael Björklund, Julian Aleksov
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Patent number: 9993438Abstract: This invention relates to a drug delivery system for administration of poorly water soluble pharmaceutically active substance, a pharmaceutical composition comprising such a drug delivery system, and a method for the preparation of such a drug delivery system. The invention also relates to a method for controlling the particle size and/or particle shape and/or particle size distribution in such a drug delivery system, and to a method for increasing the drug loading capacity of the particles. Furthermore the invention also relates to the use of such a drug delivery system for the preparation of a medicament for the treatment of cancer.Type: GrantFiled: February 27, 2015Date of Patent: June 12, 2018Assignee: Ardenia Investments, Ltd.Inventors: Julian Aleksov, Igor Lokot
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Patent number: 8999382Abstract: This invention relates to a drug delivery system for administration of poorly water soluble pharmaceutically active substance, a pharmaceutical composition comprising such a drug delivery system, and a method for the preparation of such a drug delivery system. The invention also relates to a method for controlling the particle size and/or particle shape and/or particle size distribution in such a drug delivery system, and to a method for increasing the drug loading capacity of the particles. Furthermore the invention also relates to the use of such a drug delivery system for the preparation of a medicament for the treatment of cancer.Type: GrantFiled: December 18, 2008Date of Patent: April 7, 2015Assignee: Ardenia Investments, Ltd.Inventors: Julian Aleksov, Igor Lokot
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Patent number: 8765173Abstract: A drug delivery system (DDS) for administration of a water soluble, cationic, and amphiphilic pharmaceutically active substance (API) which DDS comprises poorly water soluble nanoparticles formed by the API together with a Na-salt of N-all-trans-retinoyl cysteic acid methyl ester and/or a Na-salt of N-13-cis-retinoyl cysteic acid methyl ester. A pharmaceutical composition comprising such a DDS. Methods for preparation of such a DDS and such a pharmaceutical composition. Use of such a DDS and pharmaceutical composition for treatment of cancer.Type: GrantFiled: December 18, 2008Date of Patent: July 1, 2014Assignee: Ardenia Investments, Ltd.Inventors: Julian Aleksov, Igor Lokot
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Patent number: 7030158Abstract: A group of new compounds, N-(all-trans-Retinoyl)-L-cysteic acid, N-(13-cis-Retinoyl)-L-cysteic acid, N-(all-trans-Retinoyl)-L-cysteinesulfinic acid, N-(13-cis-Retinoyl)-L-cysteinesulfinic acid, N-(all-trans-Retinoyl)-L-homocysteic acid, N-(13-cis-Retinoyl)-L-homocysteic acid, and sodium salts of these compounds, including sodium salts of their esters and amides, is shown to exhibit therapeutic effects per se, and which compounds in combination with cytotoxic compounds, such as docetaxel, paclitaxel, doxorubicin and mitoxantrone, exhibit a synergistic effect. These compounds make it possible to manufacture new formulations of poorly soluble pharmaceutical compounds, and the present invention discloses a process of manufacturing water-soluble formulations of such compounds, exemplified by docetaxel, and paclitaxel, exhibiting enhanced pharmacological activity, and formulations of water-soluble pharmaceuticals exemplified by doxorubicin and mitoxantrone, exhibiting improved therapeutic efficacy.Type: GrantFiled: November 15, 2002Date of Patent: April 18, 2006Assignee: Ardenia Investments Ltd.Inventors: Oleg Strelchenok, Julian Aleksov
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Patent number: 6699851Abstract: Novel amides of polyunsaturated fatty acids with cysteamine-S-phosphate have been synthesized. Combinations of the all-trans-retinoic acid and/or amides of the 13-cis-retinoic acid with O-phospho-L-tyrosine, and N-docosahexaenoyl-cysteamine-S-phosphate, N-eicosapentaenoyl-cysteamine-S-phosphatee, N-arachidonoyl-cysteamine-S-phosphate, N-&agr;-linolenoyl-cysteamine-S-phosphate, and N-&ggr;-linolenoyl-cysteamine-S-phosphate and their analogues N-docosahexaenoyl-O-phospho-2-aminoethanol, N-eicosapentaenoyl-O-phospho-2-aminoethanol, N-arachidonoyl-O-phospho-2-aminoethanol, N-&agr;-linolenoyl-O-phospho-2-aminoethanol, N-&ggr;-linolenoyl-O-phospho-2-aminoethanol in different compositions exhibit a marked cell-growth inhibiting effect and display anti-tumor activity.Type: GrantFiled: May 6, 2003Date of Patent: March 2, 2004Assignee: Ardenia Investments, Ltd.Inventor: Oleg Strelchenok
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Patent number: 6642271Abstract: This invention relates to novel compounds, capable of potentiating the efficacy of therapeutically active compounds, for example cytotoxic compounds used in the treatment of cancer. The novel compounds have been shown to increase the pharmacological activity of a conventional paclitaxel formulation and to make it possible to manufacture a new formulation of paclitaxel, exhibiting improved solubility, improved storage properties, and increased therapeutic efficacy as shown in the enclosed examples.Type: GrantFiled: March 15, 2002Date of Patent: November 4, 2003Assignee: Ardenia Investments, Ltd.Inventors: Oleg Strelchenok, Julian Aleksov
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Patent number: 6599507Abstract: A complex of alpha-fetoprotein (AFP) and N-arachidonoyl aminoethyl phosphate (N-AAP) is shown to have significant immunostimulating properties and can therefore be used as a therapeutic agent in various indications, such as immune deficiencies and in particular immune deficiencies related to cancer therapy.Type: GrantFiled: December 15, 2000Date of Patent: July 29, 2003Assignee: Ardenia Investments, Ltd.Inventor: Oleg Strelchenok
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Patent number: 6403554Abstract: Novel amides are disclosed, in particular amides of the all-trans-retinoic acid or 13-cis-retinoic acid and arachidonic acid and docosahexaenoic acid and eicosapentaenoic acid or linoleic acid with 2-aminoethanol, alpha-L-serine, alpha-L-threonine, alpha-L-tyrosine containing phosphate groups. Further, the present invention discloses the synthesis and use of these compounds, in particular their pharmaceutical application.Type: GrantFiled: May 11, 2001Date of Patent: June 11, 2002Assignee: Ardenia Investments Ltd.Inventor: Oleg Strelchenok
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Patent number: 6358936Abstract: It is shown that the potency of anti-cancer drugs, here exemplified by doxorubicin, can be increased by the use of polyunsaturated fatty acid amides and in particular specific combinations of such compounds, forming complexes with doxorubicin. Further, a modified form of doxorubicin is presented.Type: GrantFiled: January 30, 2001Date of Patent: March 19, 2002Assignee: Ardenia Investments, Ltd.Inventor: Oleg Strelchenok
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Publication number: 20010018425Abstract: It is shown that the potency of anti-cancer drugs, here exemplified by doxorubicin, can be increased by the use of polyunsaturated fatty acid amides and in particular specific combinations of such compounds, forming complexes with doxorubicin. Further, a modified form of doxorubicin is presented.Type: ApplicationFiled: January 30, 2001Publication date: August 30, 2001Applicant: ARDENIA INVESTMENTS, LTD.Inventor: Oleg Strelchenok
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Patent number: 6274747Abstract: Novel amides are disclosed, in particular amides of the all-trans-retinoic acid or 13-cis-retinoic acid and arachidonic acid and docosahexaenoic acid and eicosapentaenoic acid or linoleic acid with 2-aminoethanol, alpha-L-serine, alpha-L-threonine, alpha-L-tyrosine containing phosphate groups. Further, the present invention discloses the synthesis and use of these compounds, in particular their pharmaceutical application.Type: GrantFiled: December 21, 1999Date of Patent: August 14, 2001Assignee: Ardenia Investments Ltd.Inventor: Oleg Strelchenok
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Patent number: 6197809Abstract: It is shown that the potency of anti-cancer drugs, here exemplified by doxorubicin, can be increased by the use of polyunsaturated fatty acid amides and in particular specific combinations of such compounds, forming complexes with doxorubicin. Further, a modified form of doxorubicin is presented.Type: GrantFiled: December 23, 1999Date of Patent: March 6, 2001Assignee: Ardenia Investments Ltd.Inventor: Oleg Strelchenok