Patents by Inventor Randall W. Yatscoff
Randall W. Yatscoff has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10472394Abstract: The invention is directed to isomeric mixtures of cyclosporine analogues that are structurally similar to cyclosporine A. The mixtures possess enhanced efficacy and reduced toxicity over the individual isomers and over naturally occurring and other presently known cyclosporines and cyclosporine derivatives. Embodiments of the present invention are directed toward cis and trans-isomers of cyclosporin A analogs referred to as ISATX247, and derivatives thereof. Mixtures of ISATX247 isomers exhibit a combination of enhanced potency and reduced toxicity over the naturally occurring and presently known cyclosporins. ISATX247 isomers and alkylated, arylated, and deuterated derivatives are synthesized by stereoselective pathways where the particular conditions of a reaction determine the degree of stereoselectivity.Type: GrantFiled: August 14, 2017Date of Patent: November 12, 2019Assignee: AURINIA PHARMACEUTICALS INC.Inventors: Selvaraj A. Naicker, Randall W Yatscoff, Robert T Foster
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Publication number: 20170362277Abstract: The invention is directed to isomeric mixtures of cyclosporine analogues that are structurally similar to cyclosporine A. The mixtures possess enhanced efficacy and reduced toxicity over the individual isomers and over naturally occurring and other presently known cyclosporines and cyclosporine derivatives. Embodiments of the present invention are directed toward cis and trans-isomers of cyclosporin A analogs referred to as ISATX247, and derivatives thereof. Mixtures of ISATX247 isomers exhibit a combination of enhanced potency and reduced toxicity over the naturally occurring and presently known cyclosporins. ISATX247 isomers and alkylated, arylated, and deuterated derivatives are synthesized by stereoselective pathways where the particular conditions of a reaction determine the degree of stereoselectivity.Type: ApplicationFiled: August 14, 2017Publication date: December 21, 2017Inventors: Selvaraj A. Naicker, Randall W. Yatscoff, Robert T. Foster
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Patent number: 9765119Abstract: The invention is directed to isomeric mixtures of cyclosporine analogs that are structurally similar to cyclosporine A. The mixtures possess enhanced efficacy and reduced toxicity over the individual isomers and over naturally occurring and other presently known cyclosporines and cyclosporine derivatives. Embodiments of the present invention are directed toward cis and trans-isomers of cyclosporin A analogs referred to as ISATX247, and derivatives thereof. Mixtures of ISATX247 isomers exhibit a combination of enhanced potency and reduced toxicity over the naturally occurring and presently known cyclosporins. ISATX247 isomers and alkylated, arylated, and deuterated derivatives are synthesized by stereoselective pathways where the particular conditions of a reaction determine the degree of stereoselectivity. The ratio of isomers in a mixture comprises greater than about 80 percent by weight of the E-isomer and less than about 20 percent by weight of the Z-isomer, based on the total weight of the mixture.Type: GrantFiled: November 23, 2015Date of Patent: September 19, 2017Assignee: Aurinia Pharmaceuticals Inc.Inventors: Selvaraj A. Naicker, Randall W Yatscoff, Robert T Foster
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Publication number: 20160075741Abstract: The invention is directed to isomeric mixtures of cyclosporine analogues that are structurally similar to cyclosporine A. The mixtures possess enhanced efficacy and reduced toxicity over the individual isomers and over naturally occurring and other presently known cyclosporines and cyclosporine derivatives. Embodiments of the present invention are directed toward cis and trans-isomers of cyclosporin A analogs referred to as ISATX247, and derivatives thereof. Mixtures of ISATX247 isomers exhibit a combination of enhanced potency and reduced toxicity over the naturally occurring and presently known cyclosporins. ISATX247 isomers and alkylated, arylated, and deuterated derivatives are synthesized by stereoselective pathways where the particular conditions of a reaction determine the degree of stereoselectivity. The ratio of isomers in a mixture comprises greater than about 80 percent by weight of the E-isomer and less than about 20 percent by weight of the Z-isomer, based on the total weight of the mixture.Type: ApplicationFiled: November 23, 2015Publication date: March 17, 2016Inventors: Selvaraj A. Naicker, Randall W. Yatscoff, Robert T. Foster
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Publication number: 20140370082Abstract: The invention is directed to isomeric mixtures of cyclosporine analogues that are structurally similar to cyclosporine A. The mixtures possess enhanced efficacy and reduced toxicity over the individual isomers and over naturally occurring and other presently known cyclosporines and cyclosporine derivatives. Embodiments of the present invention are directed toward cis and trans-isomers of cyclosporin A analogs referred to as ISATX247, and derivatives thereof. Mixtures of ISATX247 isomers exhibit a combination of enhanced potency and reduced toxicity over the naturally occurring and presently known cyclosporins. ISATX247 isomers and alkylated, arylated, and deuterated derivatives are synthesized by stereoselective pathways where the particular conditions of a reaction determine the degree of stereo selectivity. The ratio of isomers in a mixture comprises greater than about 80 percent by weight of the E-isomer and less than about 20 percent by weight of the Z-isomer, based on the total weight of the mixture.Type: ApplicationFiled: July 4, 2014Publication date: December 18, 2014Inventors: Selvaraj A. Naicker, Randall W. Yatscoff, Robert T. Foster
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Publication number: 20140288266Abstract: The invention is directed to isomeric mixtures of cyclosporine analogues that are structurally similar to cyclosporine A. The mixtures possess enhanced efficacy and reduced toxicity over the individual isomers and over naturally occurring and other presently known cyclosporines and cyclosporine derivatives. Embodiments of the present invention are directed toward cis and trans-isomers of cyclosporin A analogs referred to as ISATX247, and derivatives thereof. ISATX247 isomers and alkylated, arylated, and deuterated derivatives are synthesized by stereoselective pathways where the particular conditions of a reaction determine the degree of stereoselectivity. Stereoselective pathways may utilize a Wittig reaction, or an organometallic reagent comprising inorganic elements such as boron, silicon, titanium, and lithium. The ratio of isomers in a mixture may range from about 10 to 90 percent by weight of the (E)-isomer to about 90 to 10 percent by weight of the (Z)-isomer, based on the total weight of the mixture.Type: ApplicationFiled: March 18, 2014Publication date: September 25, 2014Applicant: Aurinia Pharmaceuticals, Inc.Inventors: Selvaraj A. Naicker, Randall W. Yatscoff, Robert T. Foster, Mark Abel, Seetharaman Jayaraman, Hans-Jürgen Mair, Jean-Michel Adam, Bruno Lohri
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Publication number: 20140249092Abstract: The present disclosure relates to formulations containing cyclosporin analogs that are structurally similar to cyclosporin A, in particular isomeric mixtures of cyclosporin analogs that are structurally similar to cyclosporin A. The formulations form stable microemulsion preconcentrates and may provide superior drug bioavailability and/or may reduce one or more adverse effects associated with the administration of cyclosporin. Also disclosed are methods for using and preparing the formulations.Type: ApplicationFiled: March 9, 2014Publication date: September 4, 2014Applicant: Aurinia Pharmaceuticals, Inc.Inventors: Selvaraj A. Naicker, Randall W. Yatscoff, Robert T. Foster
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Publication number: 20140235819Abstract: Cyclosporine derivatives are disclosed which possess enhanced efficacy and reduced toxicity over naturally occurring and other presently known cyclosporins and cyclosporine derivatives. The cyclosporine derivatives of the present invention are produced by chemical and isotopic substitution of the cyclosporine A (CsA) molecule by: (1) Chemical substitution and optionally deuterium substitution of amino acid 1; and (2) deuterium substitution at key sites of metabo-lism of the cyclosporine A molecule such as amino acids 1, 4, 9. Also disclosed are methods of producing the cyclosporine derivatives and methods of producing immunosuppression with reduced toxicity using the disclosed cyclosporine derivatives.Type: ApplicationFiled: February 17, 2014Publication date: August 21, 2014Applicant: Aurinia Pharmaceuticals, Inc.Inventors: Selvaraj A. Naicker, Randall W. Yatscoff, Robert T. Foster
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Publication number: 20140142277Abstract: The invention is directed to isomeric mixtures of cyclosporine analogues that are structurally similar to cyclosporine A. The mixtures possess enhanced efficacy and reduced toxicity over the individual isomers and over naturally occurring and other presently known cyclosporines and cyclosporine derivatives. Embodiments of the present invention are directed toward cis and trans-isomers of cyclosporin A analogs referred to as ISATX247, and derivatives thereof. Mixtures of ISATX247 isomers exhibit a combination of enhanced potency and reduced toxicity over the naturally occurring and presently known cyclosporins. ISATX247 isomers and alkylated, arylated, and deuterated derivatives are synthesized by stereoselective pathways where the particular conditions of a reaction determine the degree of stereoselectivity. The ratio of isomers in a mixture may range from about 10 to 90 percent by weight of the (E)-isomer to about 90 to 10 percent by weight of the (Z)-isomer, based on the total weight of the mixture.Type: ApplicationFiled: September 30, 2013Publication date: May 22, 2014Applicant: Aurinia Pharmaceuticals Inc.Inventors: Selvaraj A. Naicker, Randall W. Yatscoff, Robert T. Foster
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Publication number: 20130078280Abstract: The invention is directed to isomeric mixtures of cyclosporine analogues that are structurally similar to cyclosporine A. The mixtures possess enhanced efficacy and reduced toxicity over the individual isomers and over naturally occurring and other presently known cyclosporines and cyclosporine derivatives. Embodiments of the present invention are directed toward cis and trans-isomers of cyclosporin A analogs referred to as ISATX247, and derivatives thereof. Mixtures of ISATX247 isomers exhibit a combination of enhanced potency and reduced toxicity over the naturally occurring and presently known cyclosporins. ISATX247 isomers and alkylated, arylated, and deuterated derivatives are synthesized by stereoselective pathways where the particular conditions of a reaction determine the degree of stereoselectivity. The ratio of isomers in a mixture may range from about 10 to 90 percent by weight of the (E)-isomer to about 90 to 10 percent by weight of the (Z)-isomer, based on the total weight of the mixture.Type: ApplicationFiled: November 26, 2012Publication date: March 28, 2013Inventors: Selvaraj A. Naicker, Randall W. Yatscoff, Robert T Foster
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Publication number: 20120214745Abstract: Cyclosporine derivatives are disclosed which possess enhanced efficacy and reduced toxicity over naturally occurring and other presently known cyclosporin and cyclosporine derivatives. The cyclosporine derivatives of the present invention are produced by chemical and isotopic substitution of the cyclosporine A (CsA) molecule by: (1) Chemical substitution and optionally deuterium substitution of amino acid 1; and (2) deuterium substitution at key sites of metabolism of the cyclosporine A molecule such as amino acids 1, 4, 9. Also disclosed are methods of producing the cyclosporine derivatives and method of producing immunosuppression with reduced toxicity with the disclosed cyclosporine derivatives.Type: ApplicationFiled: February 22, 2012Publication date: August 23, 2012Applicant: Isotechnika Pharma Inc.Inventors: Salvaraj Naicker, Randall W. Yatscoff, Robert T. Foster
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Publication number: 20110166080Abstract: Cyclosporine derivatives are disclosed which possess enhanced efficacy and reduced toxicity over naturally occurring and other presently known cyclosporin and cyclosporine derivatives. The cyclosporine derivatives of the present invention are produced by chemical and isotopic substitution of the cyclosporine A (CsA) molecule by: (1) Chemical substitution and optionally deuterium substitution of amino acid 1; and (2) deuterium substitution at key sites of metabolism of the cyclosporine A molecule such as amino acids 1, 4, 9. Also disclosed are methods of producing the cyclosporine derivatives and method of producing immunosuppression with reduced toxicity with the disclosed cyclosporine derivatives.Type: ApplicationFiled: March 15, 2011Publication date: July 7, 2011Applicant: Isotechnika, Inc.Inventors: Salvaraj Naicker, Randall W. Yatscoff, Robert T. Foster
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Publication number: 20110136744Abstract: The present disclosure relates to formulations containing cyclosporin analogs that are structurally similar to cyclosporin A, in particular isomeric mixtures of cyclosporin analogs that are structurally similar to cyclosporin A. The formulations form stable microemulsion preconcentrates and may provide superior drug bioavailability and/or may reduce one or more adverse effects associated with the administration of cyclosporin. Also disclosed are methods for using and preparing the formulations.Type: ApplicationFiled: November 8, 2010Publication date: June 9, 2011Applicant: Isotechnika Inc.Inventors: Selvaraj A. Naicker, Randall W. Yatscoff, Robert T. Foster
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Publication number: 20110092669Abstract: The invention is directed to isomeric mixtures of cyclosporine analogues that are structurally similar to cyclosporine A. The mixtures possess enhanced efficacy and reduced toxicity over the individual isomers and over naturally occurring and other presently known cyclosporines and cyclosporine derivatives. Embodiments of the present invention are directed toward cis and trans-isomers of cyclosporin A analogs referred to as ISATX247, and derivatives thereof. ISATX247 isomers and alkylated, arylated, and deuterated derivatives are synthesized by stereoselective pathways where the particular conditions of a reaction determine the degree of stereoselectivity. Stereoselective pathways may utilize a Wittig reaction, or an organometallic reagent comprising inorganic elements such as boron, silicon, titanium, and lithium. The ratio of isomers in a mixture may range from about 10 to 90 percent by weight of the (E)-isomer to about 90 to 10 percent by weight of the (Z)-isomer, based on the total weight of the mixture.Type: ApplicationFiled: December 23, 2010Publication date: April 21, 2011Applicant: ISOTECHNIKA INC.Inventors: Selvaraj A. Naicker, Randall W. Yatscoff, Robert T. Foster, Mark Abel, Seetharaman Jayaraman, Hans-Jurgen Mair, Jean-Michel Adam, Bruno Lohri
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Publication number: 20100311944Abstract: The invention is directed to isomeric mixtures of cyclosporine analogues that are structurally similar to cyclosporine A. The mixtures possess enhanced efficacy and reduced toxicity over the individual isomers and over naturally occurring and other presently known cyclosporines and cyclosporine derivatives. Embodiments of the present invention are directed toward cis and trans-isomers of cyclosporin A analogs referred to as ISATX247, and derivatives thereof. Mixtures of ISATX247 isomers exhibit a combination of enhanced potency and reduced toxicity over the naturally occurring and presently known cyclosporins. ISATX247 isomers and alkylated, arylated, and deuterated derivatives are synthesized by stereoselective pathways where the particular conditions of a reaction determine the degree of stereoselectivity. The ratio of isomers in a mixture may range from about 10 to 90 percent by weight of the (E)-isomer to about 90 to 10 percent by weight of the (Z)-isomer, based on the total weight of the mixture.Type: ApplicationFiled: June 8, 2010Publication date: December 9, 2010Inventors: Selvaraj Naicker, Randall W. Yatscoff, Robert T. Foster
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Patent number: 7829533Abstract: The present invention relates to formulations containing cyclosporin analogs that are structurally similar to cyclosporin A, in particular isomeric mixtures of cyclosporin analogs that are structurally similar to cyclosporin A. The formulations form stable microemulsion preconcentrates and may provide superior drug bioavailability and/or may reduce one or more adverse effects associated with the administration of cyclosporin. Also disclosed are methods for using and preparing the formulations.Type: GrantFiled: August 22, 2008Date of Patent: November 9, 2010Assignee: Isotechnika Inc.Inventors: Selvaraj A. Naicker, Randall W. Yatscoff, Robert T. Foster
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Publication number: 20100062976Abstract: The invention is directed to isomeric mixtures of cyclosporine analogues that are structurally similar to cyclosporine A. The mixtures possess enhanced efficacy and reduced toxicity over the individual isomers and over naturally occurring and other presently known cyclosporines and cyclosporine derivatives. Embodiments of the present invention are directed toward cis and trans-isomers of cyclosporin A analogs referred to as ISATX247, and derivatives thereof. ISATX247 isomers and alkylated, arylated, and deuterated derivatives are synthesized by stereoselective pathways where the particular conditions of a reaction determine the degree of stereoselectivity. Stereoselective pathways may utilize a Wittig reaction, or an organometallic reagent comprising inorganic elements such as boron, silicon, titanium, and lithium. The ratio of isomers in a mixture may range from about 10 to 90 percent by weight of the (E)-isomer to about 90 to 10 percent by weight of the (Z)-isomer, based on the total weight of the mixture.Type: ApplicationFiled: September 8, 2009Publication date: March 11, 2010Applicant: ISOTECHNIKA INC.Inventors: Selvaraj A. Naicker, Randall W. Yatscoff, Robert T. Foster, Mark Abel, Seetharaman Jayaraman, Hans-Jurgen Mair, Jean-Michel Adam, Bruno Lohri
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Publication number: 20090318336Abstract: Cyclosporine derivatives are disclosed which possess enhanced efficacy and reduced toxicity over naturally occurring and other presently known cyclosporins and cyclosporine derivatives. The cyclosporine derivatives of the present invention are produced by chemical and isotopic substitution of the cyclosporine A (CsA) molecule by: (1) Chemical substitution and optionally deuterium substitution of amino acid 1; and (2) deuterium substitution at key sites of metabolism of the cyclosporine A molecule such as amino acids 1, 4, 9. Also disclosed are methods of producing the cyclosporine derivatives and method of producing immunosuppression with reduced toxicity with the disclosed cyclosporine derivatives.Type: ApplicationFiled: April 21, 2009Publication date: December 24, 2009Applicant: ISOTECHNIKA INC.Inventors: Selvaraj Naicker, Randall W. Yatscoff, Robert T. Foster
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Patent number: 7538189Abstract: Cyclosporine derivatives are disclosed which possess enhanced efficacy and reduced toxicity over naturally occurring and other presently known cyclosporins and cyclosporine derivatives. The cyclosporine derivatives of the present invention are produced by chemical and isotopic substitution of the cyclosporine A (CsA) molecule by: (1) Chemical substitution and optionally deuterium substitution of amino acid 1; and (2) deuterium substitution at key sites of metabolism of the cyclosporine A molecule such as amino acids 1, 4, 9. Also disclosed are methods of producing the cyclosporine derivatives and method of producing immunosuppression with reduced toxicity with the disclosed cyclosporine derivatives.Type: GrantFiled: October 6, 2005Date of Patent: May 26, 2009Assignee: Isotechnika Inc.Inventors: Selvaraj Naicker, Randall W. Yatscoff, Robert T. Foster
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Patent number: RE48226Abstract: The invention is directed to isomeric mixtures of cyclosporine analogues that are structurally similar to cyclosporine A. The mixtures possess enhanced efficacy and reduced toxicity over the individual isomers and over naturally occurring and other presently known cyclosporines and cyclosporine derivatives. Embodiments of the present invention are directed toward cis and trans-isomers of cyclosporin A analogs referred to as ISATX247, and derivatives thereof. Mixtures of ISATX247 isomers exhibit a combination of enhanced potency and reduced toxicity over the naturally occurring and presently known cyclosporins. ISATX247 isomers and alkylated, arylated, and deuterated derivatives are synthesized by stereoselective pathways where the particular conditions of a reaction determine the degree of stereoselectivity. The ratio of isomers in a mixture may range from about 10 to 90 percent by weight of the (E)-isomer to about 90 to 10 percent by weight of the (Z)-isomer, based on the total weight of the mixture.Type: GrantFiled: June 30, 2014Date of Patent: September 29, 2020Assignee: Aurinia Pharmaceuticals Inc.Inventors: Selvaraj A. Naicker, Randall W Yatscoff, Robert T Foster