Patents by Inventor Xiao-Xiong Zhou

Xiao-Xiong Zhou 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).

  • Publication number: 20130005730
    Abstract: The present invention relates to certain novel 1,3-oxazolidine compounds of formula (I), to processes for making such compounds and to their utility as renin inhibitors or prodrugs of renin inhibitors.
    Type: Application
    Filed: October 29, 2010
    Publication date: January 3, 2013
    Inventors: Piaoyang Sun, Mikhajlovich Antonov Dmitry, Xiao Xiong Zhou
  • Publication number: 20120309705
    Abstract: The present invention includes novel 3?-deoxy-3?-methylidene-?-L-nucleosides, pharmaceutical composition comprising such compounds, as well as the methods to treat or to prevent viral infections and in particular HBV and/or HIV infections.
    Type: Application
    Filed: December 14, 2010
    Publication date: December 6, 2012
    Applicant: NOVADEX PHARMACEUTICALS AB
    Inventors: Xiao Xiong Zhou, Staffan Torssell, Olov Wallner, Piaoyang Sun
  • Publication number: 20120123119
    Abstract: Methods and novel intermediates for the preparation of and the treatment with acyclic nucleoside derivatives of the formula: where one of R1 and R2 is an amino acid acyl group and the other of R1 and R2 is a —C(O)C3—C21 saturated or monounsaturated, optionally substituted alkyl and R3 is OH or H.
    Type: Application
    Filed: January 20, 2012
    Publication date: May 17, 2012
    Applicant: Medivir AB
    Inventors: Per ENGELHARDT, Marita Hogberg, Xiao-Xiong Zhou, Nils-Gunnar Johansson, Bjorn Lindborg
  • Patent number: 8143396
    Abstract: Novel bicyclic tetrahydrofuran compounds and derivatives, and pharmaceutically acceptable salts thereof, according to the formula: These compounds have utility in the treatment of retroviruses such as HIV, especially reverse transcriptase mutant which allow an obligate chain terminating nucleoside- or nucleotide-phosphate to be excised from the nascent DNA strand by ATP or pyrophosphate-mediated excision.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: March 27, 2012
    Assignee: Medivir AB
    Inventors: Xiao-Xiong Zhou, Christer Sahlberg
  • Patent number: 8124609
    Abstract: Methods and novel intermediates for the preparation of and the treatment with acyclic nucleoside derivatives of the formula: where one of R1 and R2 is an amino acid acyl group and the other of R1 and R2 is a —C(O)C3-C21 saturated or monounsaturated, optionally substituted alkyl and R3 is OH or H.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: February 28, 2012
    Assignee: Medivir AB
    Inventors: Per Engelhardt, Marita Hogberg, Xiao-Xiong Zhou, Nils-Gunnar Johansson, Björn Lindborg
  • Publication number: 20110112089
    Abstract: A compound of the formula II wherein one of R1 and R2 is halo and the other is H or halo; R3 is C1-C4 straight or branched chain, optionally fluorinated, alkyl; R4 is H; or R3 together with R4 and the adjoining backbone carbon defines: a spiro-C5-C7 cycloalkyl, optionally substituted with 1 to 3 substituents selected from halo, hydroxyl, C1-C4 alkyl or C1-C4 haloalkyl; or optionally bridged with a methylene group; or a C4-C6 saturated heterocycle having a hetero atom selected from O, NRa, S, S(?O)2; where Ra is H, C1-C4 alkyl or CH3C(?O); R5 is independently selected from H or methyl; E is —C(?O)—, —S(?O)m—, —NR5S(?O)m—, —NR5C(?O)—, —OC(?O)—, R6 is a stable, optionally substituted, monocyclic or bicyclic, carbocycle or hetorocycle; m is independently 0, 1 or 2; are inhibitors of cathepsin K and useful in the treatment or prophylaxis of osteoporosis.
    Type: Application
    Filed: January 19, 2011
    Publication date: May 12, 2011
    Applicant: Medivir AB
    Inventors: Magnus NILSSON, Xiao-Xiong ZHOU, Lourdes ODEN, Bjorn CLASSON, Rolf NOREN, Urszula GRABOWSKA, Philip JACKSON, Philip FALLON, Andrew CARR, Mark LILEY, Matt TOZER, Tony JOHNSON, Victor DIAZ, Laia CRESPO, Jussi KANGASMETSA, Thierry BONNAUD
  • Publication number: 20110112294
    Abstract: Compounds of the formula I wherein: R1 is independently H, —OR3, —NHR4; C1-C4 alkyl; or, when n is 2, adjacent R1 together define an olefinic bond; R2 is H; or when the gem R1 is C1-C4 alkyl, that R2 may also be C1-C4 alkyl; or when the gem R1 is —OR3, that R2 may also be —C(?O)OH or a pharmaceutically acceptable ester thereof; R3 is independently H, or a pharmaceutically acceptable ester thereof; R4 is independently H or a pharmaceutically acceptable amide thereof; R5 and R6 are H or an amine prodrug moiety n is 1, 2 or 3; and pharmaceutically acceptable salts thereof; have utility in the treatment or prophylaxis of HIV, especially reverse transcriptase mutants which allow an obligate chain terminating nucleoside- or nucleotide phosphate to be excised from the nascent DNA strand by ATP- or pyrophosphate-mediated excision.
    Type: Application
    Filed: December 30, 2010
    Publication date: May 12, 2011
    Applicant: Medivir AB
    Inventors: Xiao-Xiong ZHOU, Christer Sahlberg
  • Patent number: 7915300
    Abstract: A compound of the formula II wherein one of R1 and R2 is halo and the other is H or halo; R3 is C1-C4 straight or branched chain, optionally fluorinated, alkyl; R4 is H; or R3 together with R4 and the adjoining backbone carbon defines: a spiro-C5-C7 cycloalkyl, optionally substituted with 1 to 3 substituents selected from halo, hydroxyl, C1-C4 alkyl or C1-C4 haloalkyl; or optionally bridged with a methylene group; or a C4-C6 saturated heterocycle having a hetero atom selected from O, NRa, S, S(?O)2; where Ra is H, C1-C4 alkyl or CH3C(?O); R5 is independently selected from H or methyl; E is —C(?O)—, —S(?O)m—, —NR5S(?O)m—, —NR5C(?O)—, —OC(?O)—, R6 is a stable, optionally substituted, monocyclic or bicyclic, carbocycle or heterocycle; m is independently 0,1 or 2; are inhibitors of cathepsin K and useful in the treatment or prophylaxis of osteoporosis.
    Type: Grant
    Filed: January 6, 2005
    Date of Patent: March 29, 2011
    Assignee: Medivir AB
    Inventors: Magnus Nilsson, Xiao-Xiong Zhou, Lourdes Oden, Bjorn Classon, Rolf Noren, Urszula Grabowska, Philip Jackson, Philip Fallon, Andrew Carr, Mark Liley, Matt Tozer, Tony Johnson, Victor Diaz, Laia Crespo, Jussi Kangasmetsa, Thierry Bonnaud
  • Patent number: 7888367
    Abstract: Compounds of the formula (I) wherein: R1 is independently H1—OR3, —NHR4; C1-C4 alkyl; or, when n is 2, adjacent R1 together define an olefinic bond; R2 is H; or when the gem R1 is C1-C4 alkyl, that R2 may also be C1-C4 alkyl; or when the gem R1 is —OR3, that R2 may also be —C(?O)OH or a pharmaceutically acceptable ester thereof; R3 is independently H, or a pharmaceutically acceptable ester thereof; R4 is independently H or a pharmaceutically acceptable amide thereof; R5 and R6 are H or an amine prodrug moiety n is 1, 2 or 3; and pharmaceutically acceptable salts thereof; have utility in the treatment or prophylaxis of HIV, especially reverse transcriptase mutants which allow an obligate chain terminating nucleoside- or nucleotide phosphate to be excised from the nascent DNA strand by ATP- or pyrophosphate-mediated excision.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: February 15, 2011
    Assignee: Medivir AB
    Inventors: Xiao-Xiong Zhou, Christer Sahlberg
  • Patent number: 7829548
    Abstract: There is provided inter alia use of 2?,3?-dideoxy-3?-hydroxymethylcytidine or a prodrug or salt thereof in the manufacture of a medicament for the treatment of HIV infection wherein the reverse transcriptase of the HIV bears at least one mutation that allows an obligate chain terminating nucleoside- or nucleotide phosphate to be excised from the nascent DNA strand by ATP- or pyrophosphate-mediated excision.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: November 9, 2010
    Assignee: Medivir AB
    Inventors: Xiao-Xiong Zhou, Hong Zhang
  • Patent number: 7825238
    Abstract: A method for treatment of HBV and HIV infections comprising administering the compound or salt of formula Ig
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: November 2, 2010
    Assignee: Medivir AB
    Inventors: Xiao-Xiong Zhou, Horst Wahling
  • Publication number: 20090076041
    Abstract: Methods and novel intermediates for the preparation of and the treatment with acyclic nucleoside derivatives of the formula: where one of R1 and R2 is an amino acid acyl group and the other of R1 and R2 is a —C(O)C3-C21 saturated or monounsaturated, optionally substituted alkyl and R3 is OH or H.
    Type: Application
    Filed: October 3, 2008
    Publication date: March 19, 2009
    Applicant: Medivir AB
    Inventors: Per ENGELHARDT, Marita HOGBERG, Xiao-Xiong ZHOU, Nils-Gunnar JOHANSSON, Bjorn LINDBORG
  • Patent number: 7432274
    Abstract: Methods and novel intermediates for the preparation of and the treatment with acyclic nucleoside derivatives of the formula: where one of R1 and R2 is an amino acid acyl group and the other of R1 and R2 is a —C(O)C3-C21 saturated or monounsaturated, optionally substituted alkyl and R3 is OH or H.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: October 7, 2008
    Assignee: Medivir AB
    Inventors: Per Engelhardt, Marita Hogberg, Nils-Gunnar Johansson, Xiao-Xiong Zhou, Bjorn Lindborg
  • Publication number: 20080234260
    Abstract: A compound of the formula II wherein one of R1 and R2 is halo and the other is H or halo; R3 is C1-C4 straight or branched chain, optionally fluorinated, alkyl; R4 is H; or R3 together with R4 and the adjoining backbone carbon defines: a spiro-C5-C7 cycloalkyl, optionally substituted with 1 to 3 substituents selected from halo, hydroxyl, C1-C4 alkyl or C1-C4 haloalkyl; or optionally bridged with a methylene group; or a C4-C6 saturated heterocycle having a hetero atom selected from O, NRa, S, S(?O)2; where Ra is H, C1-C4 alkyl or CH3C(?O); R5 is independently selected from H or methyl; E is —C(?O)—, —S(?O)m—, —NR5S(?O)m—, —NR5C(?O)—, —OC(?O)—, R6 is a stable, optionally substituted, monocyclic or bicyclic, carbocycle or heterocycle; m is independently 0,1 or 2; are inhibitors of cathepsin K and useful in the treatment or prophylaxis of osteoporosis.
    Type: Application
    Filed: January 6, 2005
    Publication date: September 25, 2008
    Inventors: Magnus Nilsson, Xiao-Xiong Zhou, Lourdes Oden, Bjorn Classon, Rolf Noren, Urszula Grabowska, Philip Jackson, Philip Fallon, Andrew Carr, Mark Liley, Matt Tozer, Tony Johnson, Victor Diaz, Laia Crespo, Jussi Kangasmetsa, Thierry Bonnaud
  • Publication number: 20080221140
    Abstract: Compounds of the formula (I) wherein: R1 is independently H1—OR3, —NHR4; C1-C4 alkyl; or, when n is 2, adjacent R1 together define an olefinic bond; R2 is H; or when the gem R1 is C1-C4 alkyl, that R2 may also be C1-C4 alkyl; or when the gem R1 is —OR3, that R2 may also be —C(?O)OH or a pharmaceutically acceptable ester thereof; R3 is independently H, or a pharmaceutically acceptable ester thereof; R4 is independently H or a pharmaceutically acceptable amide thereof; R5 and R6 are H or an amine prodrug moiety n is 1, 2 or 3; and pharmaceutically acceptable salts thereof; have utility in the treatment or prophylaxis of HIV, especially reverse transcriptase mutants which allow an obligate chain terminating nucleoside- or nucleotide phosphate to be excised from the nascent DNA strand by ATP- or pyrophosphate-mediated excision.
    Type: Application
    Filed: July 5, 2006
    Publication date: September 11, 2008
    Inventors: Xiao-Xiong Zhou, Christer Sahlberg
  • Publication number: 20080176817
    Abstract: There is provided inter alia use of 2?,3?-dideoxy-3?-hydroxymethylcytosine or a prodrug or salt thereof in the manufacture of a medicament for the treatment of HIV infection wherein the reverse transcriptase of the HIV bears at least one mutation that allows an obligate chain terminating nucleoside- or nucleotide phosphate to be excised from the nascent DNA strand by ATP- or pyrophosphate-mediated excision.
    Type: Application
    Filed: December 28, 2005
    Publication date: July 24, 2008
    Applicant: Medivir AB
    Inventors: Xiao-Xiong Zhou, Hong Zhang
  • Patent number: 7071173
    Abstract: A method for treatment of HBV and HIV infections comprising administering the compound or salt of formula Ig
    Type: Grant
    Filed: August 12, 2005
    Date of Patent: July 4, 2006
    Assignee: Medivir AB
    Inventors: Xiao-Xiong Zhou, Horst Wahling
  • Publication number: 20060122383
    Abstract: A method for treatment of HBV and HIV infections comprising administering the compound or salt of formula Ig
    Type: Application
    Filed: January 18, 2006
    Publication date: June 8, 2006
    Applicant: Medivir AB
    Inventors: Xiao-Xiong Zhou, Horst Wahling
  • Publication number: 20060058259
    Abstract: A method for treatment of HBV and HIV infections comprising administering the compound or salt of formula Ig
    Type: Application
    Filed: August 12, 2005
    Publication date: March 16, 2006
    Applicant: Medivir AB
    Inventors: Xiao-Xiong Zhou, Horst Wahling
  • Patent number: 6974802
    Abstract: A method of treating HBV or HIV infections comprising administering to an individual an effective amount of the compound of formula IId?: wherein R2 is the residue of an aliphatic L-amino acid, p is 0, 1, or 2-20, and q is 0, or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: December 13, 2005
    Assignee: Medivir AB
    Inventors: Xiao-Xiong Zhou, Nils Gunnar Johansson, Horst Wahling