Abstract: The invention relates to (among other things) oligomer-foscarnet conjugates and related compounds. A conjugate of the invention, when administered by any of a number of administration routes, exhibits advantages over previously administered un-conjugated foscarnet compounds.
Abstract: The invention relates to (among other things) polymer-des-ethyl sunitinib conjugates and related compounds. A compound of the invention, when administered by any of a number of administration routes, exhibits advantages over des-ethyl sunitinib in unconjugated form.
Type:
Grant
Filed:
December 23, 2011
Date of Patent:
March 5, 2019
Assignee:
NEKTAR THERAPEUTICS
Inventors:
Antoni Kozlowski, Sean M. Culbertson, Xiaoming Shen, Samuel P. Mcmanus, Mark A. Wilson
Abstract: The present invention relates to active substances in particulate form, to methods for preparing them and to their uses. The present invention provides particulate powders, such as might be of use for delivery using a dry powder inhaler (DPI) or similar delivery device, having properties which may be beneficial to the DPI delivery process.
Type:
Grant
Filed:
June 9, 2017
Date of Patent:
January 29, 2019
Assignee:
Nektar Therapeutics
Inventors:
Peter York, Boris Yu Shekunov, Mahboob Ur Rehman, Jane Catherine Feeley
Abstract: The instant disclosure relates to (among other things) compounds that are derivatives of 6-(2,3-dichlorophenyl)-1,2,4-triazin-5-amine. The compounds provided possess unique effects and differences over other phenyltriazines known in the art.
Type:
Grant
Filed:
December 19, 2014
Date of Patent:
January 29, 2019
Assignee:
Nektar Therapeutics
Inventors:
Pankaj Sharma, Vijay Kumar Khatri, Xuyuan Gu, Yuan Song, Michael Lixin Shen, Jennifer Riggs-Sauthier, Neel K. Anand, Antoni Kozlowski, Aleksandrs Odinecs, Timothy A. Riley, Zhongxu Ren, YongQi Mu, Xiaoming Shen, Xuejun Yuan, Natalia Aurrecoechea, Donogh John Roger O'Mahony, Bo-Liang Deng
Abstract: The invention provides compounds that are chemically modified by covalent attachment of a water-soluble oligomer. A compound of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from those of the compound not attached to the water-soluble oligomer.
Type:
Grant
Filed:
October 24, 2017
Date of Patent:
December 4, 2018
Assignee:
Nektar Therapeutics
Inventors:
Jennifer Riggs-Sauthier, Bo-Liang Deng, Timothy A. Riley
Abstract: The present invention provides, among other things, compounds that include a water-soluble and non-peptidic polymer as well as a maleimidyl group. The compounds are useful as, among other things, polymeric reagents.
Type:
Grant
Filed:
November 22, 2016
Date of Patent:
December 4, 2018
Assignee:
Nektar Therapeutics
Inventors:
Samuel P. McManus, Antoni Kozlowski, J. Milton Harris
Abstract: Provided is a method of treating an individual suffering from a cancer such as breast cancer by administering to the individual a long-acting topoisomerase I inhibitor such as SN-38 or irinotecan, and correlating the level of at least one tumor marker such as CA27.29 in the individual with response of the cancer to treatment with the long-acting topoisomerase I inhibitor, to thereby provide a method for predicting and assessing the therapeutic efficacy of the treatment.
Type:
Grant
Filed:
November 27, 2013
Date of Patent:
November 20, 2018
Assignee:
Nektar Therapeutics
Inventors:
Yen Lin Chia, Ute Hoch, Alison Hannah, Michael A. Eldon
Abstract: The present invention provides conjugates having a degradable linkage and polymeric reagents useful in preparing such conjugates. The conjugates as well as the polymeric reagents used to form the conjugates include at least one of each the following: an aromatic moiety comprising an ionizable hydrogen atom, a spacer moiety, and a water-soluble polymer. Methods of making polymeric reagents and conjugates, as well as methods for administering conjugates and compositions, are also provided.
Type:
Grant
Filed:
August 18, 2017
Date of Patent:
November 20, 2018
Assignee:
Nektar Therapeutics
Inventors:
Michael D. Bentley, Sean M. Culbertson, Samuel P. McManus
Abstract: Among other aspects, provided herein are multi-arm polymeric prodrug conjugates of taxane-based compounds and/or fluorinated forms thereof. Methods of preparing such conjugates as well as methods of administering the conjugates are also provided. Upon administration to a patient, release of the taxane-based compound is achieved.
Type:
Grant
Filed:
February 16, 2016
Date of Patent:
October 16, 2018
Assignee:
Nektar Therapeutics
Inventors:
Antoni Kozlowski, Timothy A. Riley, Samuel P. McManus
Abstract: Provided herein (among other things) are protease inhibitor compounds having enhanced features, along with methods for administering such compounds. For example, the subject compounds can be administered without concomitant administration of a CYP3A4 inhibitor, have increased therapeutic index and/or increased potency, and are low-resistance inducing in nature.
Type:
Grant
Filed:
August 4, 2016
Date of Patent:
October 9, 2018
Assignee:
Nektar Therapeutics
Inventors:
C. Simone Jude-Fishburn, Laurie A. VanderVeen, Timothy A. Riley
Abstract: Provided are compounds, including those of Formula I; and pharmaceutically acceptable salts and solvates thereof. The compounds described herein relate to and/or have application(s) in (among others) the fields of drug discovery, pharmacotherapy, physiology, organic chemistry and polymer chemistry.
Type:
Grant
Filed:
May 24, 2017
Date of Patent:
September 25, 2018
Assignee:
Nektar Therapeutics
Inventors:
Franco J. Duarte, Neel K. Anand, Pankaj Sharma, Devendrapratap Singh
Abstract: Among other aspects, provided herein are multi-armed polymer conjugates comprising an alkanoate-linker, compositions comprising such conjugates, and related methods of making and administering the same. Methods of treatment employing such conjugates and related uses are also provided. The conjugates are prepared with high drug loading efficiencies.
Type:
Grant
Filed:
October 18, 2016
Date of Patent:
August 7, 2018
Assignee:
Nektar Therapeutics
Inventors:
Antoni Kozlowski, Samuel P. McManus, Jennifer Riggs-Sauthier, Xiaoming Shen, Wen Zhang
Abstract: Provided are methods of preparing heterobifunctional poly(ethylene glycol) derivatives (e.g., HO-PEG-OCH2CO2H) by alkylating poly(ethylene glycol). A method comprises: (a) synthesizing Ar—CR1R2O-Poly-OH (e.g., Bz-PEG-OH, where Bz is benzyl) by forming a polymer Poly (e.g., HO-PEG-OH) onto the aryl methyl oxide ion, Ar—CR1R2O?; (b) alkylating Ar—CR1R2O-Poly-OH to form Ar—CR1R2—O-poly-OR9 (e.g., Bz-O-PEG-OCH2CO2(CH3)3); (c) converting the Ar—CR1R2O— moiety to —OH by acid-catalyzed hydrolysis or hydrogenolysis to form a new mixture of R9O-PEG-OH and R9O-PEG-OR9 (e.g., HO-PEG-OCH2CO2H and HO2CCH2O-PEG-OCH2CO2H); and (d) optionally, isolating the R9O-PEG-OH product formed in (c). The method of the present invention obviates the extensive and laborious purification prior art steps normally required to remove HO-Poly-OH (e.g., HO-PEG-OH) from a preparation of the PEG derivatives.
Type:
Grant
Filed:
December 23, 2014
Date of Patent:
July 31, 2018
Assignee:
Nektar Therapeutics
Inventors:
Michael D. Bentley, J. Milton Harris, Antoni Kozlowski
Abstract: The invention relates to (among other things) method of administering to a patient suffering from a cancer, the method comprising the steps of: (a) an IL-2R?-activating amount of a long acting, IL-2R?-selective agonist; and (b) a CTLA-4 pathway-inhibiting amount of an anti-CTLA-4 antibody or a PD-1 pathway-inhibiting amount of an anti-PD-1 antibody.
Type:
Grant
Filed:
February 20, 2015
Date of Patent:
July 3, 2018
Assignee:
Nektar Therapeutics
Inventors:
Murali Krishna Addepalli, Deborah H. Charych, Seema Kantak, Steven Robert Lee
Abstract: Methods for preparing water soluble, non-peptidic polymers carrying carboxyl functional groups, particularly carboxylic acid functionalized poly(ethylene glycol) (PEG) polymers are disclosed, as are the products of these methods. In general, an ester reagent R(C?O)OR?, wherein R? is a tertiary group and R comprises a functional group X, is reacted with a water soluble, non-peptidic polymer POLY-Y, where Y is a functional group which reacts with X to form a covalent bond, to form a tertiary ester of the polymer, which is then treated with a strong base in aqueous solution, to form a carboxylate salt of the polymer. Typically, this carboxylate salt is then treated with an inorganic acid in aqueous solution, to convert the carboxylate salt to a carboxylic acid, thereby forming a carboxylic acid functionalized polymer.
Type:
Grant
Filed:
June 19, 2013
Date of Patent:
July 3, 2018
Assignee:
NEKTAR THERAPEUTICS
Inventors:
J. Milton Harris, Antoni Kozlowski, Lihong Guo
Abstract: Conjugates of a Factor VIII moiety and one or more water-soluble polymers are provided. Typically, the water-soluble polymer is poly(ethylene glycol) or a derivative thereof. Also provided are compositions comprising the conjugates, methods of making the conjugates, and methods of administering compositions comprising the conjugates to a patient.
Type:
Grant
Filed:
December 9, 2015
Date of Patent:
June 19, 2018
Assignee:
Nektar Therapeutics
Inventors:
Mary J. Bossard, Michael D. Bentley, Ping Zhang
Abstract: The invention relates to (among other things) polymer-semaxanib moiety conjugates and related compounds. A compound of the invention, when administered by any of a number of administration routes, exhibits advantages over the semaxanib moiety in unconjugated form.
Type:
Grant
Filed:
December 23, 2011
Date of Patent:
April 17, 2018
Assignee:
Nektar Therapeutics
Inventors:
Jennifer Riggs-Sauthier, Stephanie Allums-Donald, Sean M. Culbertson
Abstract: The invention relates to (among other things) oligomer-containing benzamide-based compound compounds. A compound of the invention exhibits one or more advantages over corresponding compounds lacking the oligomer.
Type:
Grant
Filed:
May 25, 2016
Date of Patent:
April 10, 2018
Assignee:
Nektar Therapeutics
Inventors:
Lin Cheng, Jennifer Riggs-Sauthier, Neel K. Anand
Abstract: The present invention relates generally to the co-administration of an opioid agonist compound and an analgesic compound. In addition, the invention relates to, among other things, dosage forms for co-administration of an opioid agonist compound and an analgesic compound, methods for administering an opioid agonist compound and an analgesic compound, compositions comprising an opioid agonist compound and an analgesic compound, dosage forms comprising an opioid agonist compound and an analgesic compound, and so on.
Type:
Grant
Filed:
September 1, 2016
Date of Patent:
March 27, 2018
Assignee:
Nektar Therapeutics
Inventors:
Timothy A. Riley, Juergen W. Pfeiffer, Hema Gursahani
Abstract: A method for preparing a polymeric reagent is provided, which method includes the optional step of forming an N-hydroxysuccinimdyl ester derivative. Related methods, preparations, and so forth are also provided.
Type:
Grant
Filed:
June 16, 2016
Date of Patent:
March 13, 2018
Assignee:
Nektar Therapeutics
Inventors:
J. Milton Harris, Antoni Kozlowski, Samuel P. McManus, Michael D. Bentley, Stephen A. Charles