Patents by Inventor Johannes H. Voigt
Johannes H. Voigt 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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Publication number: 20100292203Abstract: Disclosed are compounds of the formula I or a stereoisomer, tautomer, or pharmaceutically acceptable salt or solvate thereof, wherein W is a bond, —C(?S)—, —S(O)—, —S(O)2—, —C(?O)—, —O—, —C(R6)(R7)—, —N(R5)— or —C(?N(R5))—; X is —O—, —N(R5)— or —C(R6)(R7)—; provided that when X is —O—, U is not —O—, —S(O)—, —S(O)2—, —C(?O)— or —C(?NR5)—; U is a bond, —S(O)—, —S(O)2—, —C(O)—, —O—, —P(O)(OR15)—, —C(?NR5)—, —(C(R6)(R7))b— or —N(R5)—; wherein b is 1 or 2; provided that when W is —S(O)—, —S(O)2—, —O—, or —N(R5)—, U is not —S(O)—, —S(O)2—, —O—, or —N(R5)—; provided that when X is —N(R5)— and W is —S(O)—, —S(O)2—, —O—, or —N(R5)—, then U is not a bond; and R1, R2, R3, R4, R5, R6, and R7 are as defined in the specification; and pharmaceutical compositions comprising the compounds of formula I.Type: ApplicationFiled: January 26, 2010Publication date: November 18, 2010Inventors: Zhaoning Zhu, Brian McKittrick, Zhong-Yue Sun, Yuanzan C. Ye, Johannes H. Voigt, Corey O. Strickland, Elizabeth M. Smith, Andrew Stamford, William J. Greenlee, Robert D. Mazzola, John P. Caldwell, Jared N. Cumming, Lingyan Wang, Yusheng Wu, Ulrich Iserloh, Xiaoxiang Liu, Dawit Tadesse, Ying Huang, Guoqing Li, Jianping Pan
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Patent number: 7812013Abstract: Disclosed are compounds of the formula I or a stereoisomer, tautomer, or pharmaceutically acceptable salt, solvate or ester thereof, wherein U, W, X, L, Y, M, Z, c, d, e, f, g, h, s, t, R1, R2, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17 and R18 are as defined in the specification; and pharmaceutical compositions comprising the compounds of formula I. Also disclosed is the method of inhibiting aspartyl protease, and in particular, the methods of treating cardiovascular diseases, cognitive and neurodegenerative diseases. Also disclosed are methods of treating cognitive or neurodegenerative diseases using the compounds of formula I in combination with a cholinesterase inhibitor or a muscarinic m1 agonist or m2 antagonist.Type: GrantFiled: June 12, 2006Date of Patent: October 12, 2010Assignee: Schering CorporationInventors: Ulrich Iserloh, Zhaoning Zhu, Andrew Stamford, Johannes H. Voigt
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Publication number: 20100247514Abstract: In its many embodiments, the present invention provides a novel class of heterocyclic compounds as modulators of gamma secretase, methods of preparing such compounds, pharmaceutical compositions containing one or more such compounds, methods of preparing pharmaceutical formulations comprising one or more such compounds, and methods of treatment, prevention, inhibition, or amelioration of one or more diseases associated with the central nervous system using such compounds or pharmaceutical compositions.Type: ApplicationFiled: May 5, 2008Publication date: September 30, 2010Inventors: Zhaoning Zhu, William J. Greenlee, Zhong-Yue Sun, Gioconda Gallo, Theodros Asberom, Xianhai Huang, Xiaohong Zhu, Mark D. McBriar, Dmitri A. Pissarnitski, Zhiqiang Zhao, Ruo Xu, Hongmei Li, Anandan Palani, Johannes H. Voigt, Robert D. Mazzola, JR., John Clader, Hubert Josien, Jun Qin
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Patent number: 7763609Abstract: Disclosed are compounds of the formula I or a stereoisomer, tautomer, or pharmaceutically acceptable salt or solvate thereof, wherein W is a bond, —C(?S)—, —S(O)—, —S(O)2—, —C(?O)—, —O—, —C(R6)(R7)—, —N(R5)— or —C(?N(R5))—; X is —O—, —N(R5)— or —C(R6)(R7)—; provided that when X is —O—, U is not —O—, —S(O)—, —S(O)2—, —C(?O)— or —C(?NR5)—; U is a bond, —S(O)—, —S(O)2—, —C(O)—, —O—, —P(O)(OR15)—, —C(?NR5)—, —(C(R6)(R7))b— or —N(R5)—; wherein b is 1 or 2; provided that when W is —S(O)—, —S(O)2—, —O—, or —N(R5)—, U is not —S(O)—, —S(O)2—, —O—, or —N(R5)—; provided that when X is —N(R5)— and W is —S(O)—, —S(O)2—, —O—, or —N(R5)—, then U is not a bond; and R1, R2, R3, R4, R5, R6, and R7 are as defined in the specification; and pharmaceutical compositions comprising the compounds of formula I.Type: GrantFiled: February 23, 2007Date of Patent: July 27, 2010Assignees: Schering Corporation, Pharmacopeia, LLCInventors: Zhaoning Zhu, Brian McKittrick, Zhong-Yue Sun, Yuanzan C. Ye, Johannes H. Voigt, Corey O. Strickland, Elizabeth M. Smith, Andrew Stamford, William J. Greenlee, Robert D. Mazzola, John P. Caldwell, Jared N. Cumming, Lingyan Wang, Yusheng Wu, Ulrich Iserloh, Xiaoxiang Liu, Tao Guo, Thuy X. E. Le, Kurt W. Saionz, Suresh D. Babu, Rachael C. Hunter, Michelle L. Morris, Huizhong Gu, Gang Qian, Dawit Tadesse, Ying Huang, Guoqing Li, Jianping Pan, Jeffrey A. Misiaszek, Gaifa Lai, Jingqi Duo, Chuanxing Qu, Yuefei Shao
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Publication number: 20100178294Abstract: Disclosed are novel compounds of the formula or a pharmaceutically acceptable salt or solvate thereof, wherein R1, R2, R3, n and X are as defined in the specification. Also disclosed are pharmaceutical compositions comprising the compounds of formula I. Also disclosed are methods of treating cognitive or neurodegenerative diseases such as Alzheimer's disease. Also disclosed are methods of treating a cognitive or neurodegenerative disease comprising administering to a patient I need of such treatment a combination of at least one compound of formula I and at least one compound selected from the group consisting of ?-secretase inhibitors other than those of formula I, HMG-CoA reductase inhibitors, gamma-secretase inhibitors, non-steroidal anti-inflammatory agents, N-methyl-D-aspartate receptor antagonists, cholinesterase inhibitors and anti-amyloid antibodies.Type: ApplicationFiled: October 1, 2009Publication date: July 15, 2010Inventors: Andrew W. Stamford, Ying Huang, Guoqing Li, Corey O. Strickland, Johannes H. Voigt
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Publication number: 20100152138Abstract: Disclosed are compounds of the formula or a pharmaceutically acceptable salt or solvate thereof, wherein R1 is R is —C(O)—N(R27)(R28) or and the remaining variables are as defined in the specification. Also disclosed are pharmaceutical compositions comprising the compounds of formula I. Also disclosed are methods of treating cognitive or neurodegenerative diseases such as Alzheimer's disease. Also disclosed are pharmaceutical compositions and methods of treating cognitive or neurodegenerative diseases comprising the compounds of formula I in combination with a ?-secretase inhibitor other than those of formula I, an HMG-CoA reductase inhibitor, a gamma-secretase inhibitor, a non-steroidal anti-inflammatory agent, an N-methyl-D-aspartate receptor antagonist, a cholinesterase inhibitor or an anti-amyloid antibody.Type: ApplicationFiled: December 18, 2009Publication date: June 17, 2010Inventors: Jared N. Cumming, Ulrich Iserloh, Andrew Stamford, Corey Strickland, Johannes H. Voigt, Yusheng Wu, Ying Huang, Yan Xia, Samuel Chackalamannil, Tao Guo, Douglas W. Hobbs, Thuy X.H. Le, Jeffrey F. Lowrie, Kurt W. Saionz, Suresh D. Babu
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Patent number: 7700603Abstract: Disclosed are compounds of the formula I or a stereoisomer, tautomer, or pharmaceutically acceptable salt or solvate thereof, wherein W is a bond, —C(?S)—, —S(O)—, —S(O)2—, —C(?O)—, —O—, —C(R6)(R7)—, —N(R5)— or —C(?N(R5))—; X is —O—, —N(R5)— or —C(R6)(R7)—; provided that when X is —O—, U is not —O—, —S(O)—, —S(O)2—, —C(?O)— or —C(?NR5)—; U is a bond, —S(O)—, —S(O)2—, —C(O)—, —O—, —P(O)(OR15)—, —C(?NR5)—, —(C(R6)(R7))b— or —N(R5)—; wherein b is 1 or 2; provided that when W is —S(O)—, —S(O)2—, —O—, or —N(R5)—, U is not —S(O)—, —S(O)2—, —O—, or —N(R5)—; provided that when X is —N(R5)— and W is —S(O)—, —S(O)2—, —O—, or —N(R5)—, then U is not a bond; and R1, R2, R3, R4, R5, R6, and R7 are as defined in the specification; and pharmaceutical compositions comprising the compounds of formula I.Type: GrantFiled: June 9, 2005Date of Patent: April 20, 2010Assignee: Schering CorporationInventors: Zhaoning Zhu, Brian A McKittrick, Zhong-Yue Sun, Yuanzan C Ye, Johannes H Voigt, Corey Strickland, Elizabeth M. Smith, Andrew Stamford, William J. Greenlee, Robert Mazzola, John Caldwell, Jared N. Cumming, Lingyan Wang, Yusheng Wu, Ulrich Iserloh, Tao Guo, Thuy X. H. Le, Kurt W. Saionz, Suresh D. Babu, Rachael C. Hunter, Michelle L. Morris, Gang Qian, Dawit Tadesse
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Publication number: 20100063121Abstract: Disclosed are compounds of the formula I or a stereoisomer, tautomer, or pharmaceutically acceptable salt, solvate or ester thereof, wherein U, W, X, L, Y, M, Z, c, d, e, f, g, h, s, t, R1, R2, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17 and R18 are as defined in the specification; and pharmaceutical compositions comprising the compounds of formula I. Also disclosed is the method of inhibiting aspartyl protease, and in particular, the methods of treating cardiovascular diseases, cognitive and neurodegenerative diseases. Also disclosed are methods of treating cognitive or neurodegenerative diseases using the compounds of formula I in combination with a cholinesterase inhibitor or a muscarinic m1 agonist or m2 antagonist.Type: ApplicationFiled: November 17, 2009Publication date: March 11, 2010Inventors: Ulrich Iserloh, Zhaoning Zhu, Andrew Stamford, Johannes H. Voigt
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Patent number: 7662816Abstract: Disclosed are compounds of the formula or a pharmaceutically acceptable salt or solvate thereof, wherein R1 is R is —C(O)—N(R27)(R28) or and the remaining variables are as defined in the specification. Also disclosed are pharmaceutical compositions comprising the compounds of formula I. Also disclosed are methods of treating cognitive or neurodegenerative diseases such as Alzheimer's disease. Also disclosed are pharmaceutical compositions and methods of treating cognitive or neurodegenerative diseases comprising the compounds of formula I in combination with a ?-secretase inhibitor other than those of formula I, an HMG-CoA reductase inhibitor, a gamma-secretase inhibitor, a non-steroidal anti-inflammatory agent, an N-methyl-D-aspartate receptor antagonist, a cholinesterase inhibitor or an anti-amyloid antibody.Type: GrantFiled: August 4, 2004Date of Patent: February 16, 2010Assignee: Schering CorporationInventors: Jared N. Cumming, Ulrich Iserloh, Andrew Stamford, Corey Strickland, Johannes H. Voigt, Yusheng Wu, Ying Huang, Yan Xia, Samuel Chackalamannil, Tao Guo, Douglas W. Hobbs, Thuy X. H. Le, Jeffrey F. Lowrie, Kurt W. Saionz, Suresh D. Babu
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Patent number: 7652003Abstract: Disclosed are novel compounds of the formula or a pharmaceutically acceptable salt or solvate thereof, wherein R1, R2, R3, n and X are as defined in the specification. Also disclosed are pharmaceutical compositions comprising the compounds of formula I. Also disclosed are methods of treating cognitive or neurodegenerative diseases such as Alzheimer's disease. Also disclosed are methods of treating a cognitive or neurodegenerative disease comprising administering to a patient I need of such treatment a combination of at least one compound of formula I and at least one compound selected from the group consisting of ?-secretase inhibitors other than those of formula I, HMG-CoA reductase inhibitors, gamma-secretase inhibitors, non-steroidal anti-inflammatory agents, N-methyl-D-aspartate receptor antagonists, cholinesterase inhibitors and anti-amyloid antibodies.Type: GrantFiled: July 26, 2005Date of Patent: January 26, 2010Assignee: Schering-Plough CorporationInventors: Andrew W Stamford, Ying Huang, Guoqing Li, Corey O Strickand, Johannes H. Voigt
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Publication number: 20090312341Abstract: Disclosed are novel compounds of the formula or a pharmaceutically acceptable salt or solvate thereof, wherein R1 is X is —O—, —C(R14)2— or —N(R)—; Z is —C(R14)2— or —N(R)—; t is 0, 1, 2 or 3; each R and R2 is independently H, alkyl, cycloalkyl, cycloalkylalkyl, aryl, heteroaryl, heterocycloalkyl, arylalkyl, heteroarylalkyl, heterocycloalkylalkyl, alkenyl or alkynyl; each R14 is H, alkyl, alkenyl, alkynyl, halo, —CN, haloalkyl, cycloalkyl, cycloalkylalkyl, aryl, heteroaryl, heterocycloalkyl, arylalkyl, heteroarylalkyl, heterocycloalkylalkyl, —OR35, —N(R24) (R25) or —SR35; R41 is alkyl, cycloalkyl, —SO2(alkyl), —C(O)-alkyl, —C(O)-cycloalkyl or -alkyl-NH—C(O)CH3; and the remaining variables are as defined in the specification. Also disclosed are pharmaceutical compositions comprising the compounds of formula I and methods of treating cognitive or neurodegenerative diseases with compounds of formula I.Type: ApplicationFiled: June 24, 2009Publication date: December 17, 2009Inventors: Jared N. Cumming, Ying Huang, Guoqing Li, Ulrich Iserloh, Andrew Stamford, Corey Strickland, Johannes H. Voigt, Yusheng Wu, Jianping Pan, Tao Guo, Douglas W. Hobbs, Thuy X. H. Le, Jeffrey F. Lowrie
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Publication number: 20090306047Abstract: Disclosed are compounds of the formula I or a stereoisomer, tautomer, or pharmaceutically acceptable salt or solvate thereof, wherein W is a bond, —C(?S)—, —S(O)—, —S(O)2—, —C(?O)—, —O—, —C(R6)(R7)—, —N(R5)— or —C(?N(R5))—; X is —O—, —N(R5)— or —C(R6)(R7)—; provided that when X is —O—, U is not —O—, —S(O)—, —S(O)2—, —C(?O)— or —C(?NR5)—; U is a bond, —S(O)—, —S(O)2—, —C(O)—, —O—, —P(O)(OR15)—, —C(?NR5)—, —(C(R6)(R7))b— or —N(R5)—; wherein b is 1 or 2; provided that when W is —S(O)—, —S(O)2—, —O—, or —N(R5)—, U is not —S(O)—, —S(O)2—, —O—, or —N(R5)—; provided that when X is —N(R5)— and W is —S(O)—, —S(O)2—, —O—, or —N(R5)—, then U is not a bond; and R1, R2, R3, R4, R5, R6, and R7 are as defined in the specification; and pharmaceutical compositions comprising the compounds of formula I.Type: ApplicationFiled: June 8, 2009Publication date: December 10, 2009Inventors: Zhaoning Zhu, Brian McKittrick, Zhong-Yue Sun, Yuanzan C. Ye, Johannes H. Voigt, Corey Strickland, Elizabeth M. Smith, Andrew Stamford, William J. Greenlee, Robert Mazzola, John Caldwell, Jared N. Cumming, Lingyan Wang, Yusheng Wu, Ulrich Iserloh, Tao Guo, Thuy X.H. Le, Kurt W. Saionz, Suresh D. Babu, Rachael C. Hunter
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Publication number: 20090258868Abstract: Disclosed are compounds of the formula I or a stereoisomer, tautomer, or pharmaceutically acceptable salt or solvate thereof, wherein W is a bond, —C(?S)—, —S(O)—, —S(O)2—, —C(?O)—, —O—, —C(R6)(R7)—, —N(R5)— or —C(?N(R5))—; X is —O—, —N(R5)— or —C(R6)(R7)—; provided that when X is —O—, U is not —O—, —S(O)—, —S(O)2—, —C(?O)— or —C(?NR5)—; U is a bond, —S(O)—, —S(O)2—, —C(O)—, —O—, —P(O)(OR15)—, —C(?NR5)—, —(C(R6)(R7))b— or —N(R5)—; wherein b is 1 or 2; provided that when W is —S(O)—, —S(O)2—, —O—, or —N(R5)—, U is not —S(O)—, —S(O)2—, —O—, or —N(R5)—; provided that when X is —N(R5)— and W is —S(O)—, —S(O)2—, —O—, or —N(R5)—, then U is not a bond; and R1, R2, R3, R4, R5, R6, and R7 are as defined in the specification; and pharmaceutical compositions comprising the compounds of formula I.Type: ApplicationFiled: December 10, 2008Publication date: October 15, 2009Inventors: Zhaoning Zhu, Brian A. McKittrick, Zhong-Yue Sun, Yuanzan C. Ye, Johannes H. Voigt, Corey Strickland, Elizabeth M. Smith, Andrew Stamford, William J. Greenlee, Robert Mazzola, John Caldwell, Jared N. Cumming, Lingyan Wang, Yusheng Wu, Ulrich Iserloh, Tao Guo, Thuy X.H. Le, Kurt W. Saionz, Suresh D. Babu, Rachael C. Hunter, Michelle L. Morris, Huizhong Gu, Gang Qian, Dawit Tadesse
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Patent number: 7598250Abstract: Disclosed are novel compounds of the formula or a pharmaceutically acceptable salt or solvate thereof, wherein R1 is X is —O—, —C(R14)2— or —N(R)—; Z is —C(R14)2— or —N(R)—; t is 0, 1, 2 or 3; each R and R2 is independently H, alkyl, cycloalkyl, cycloalkylalkyl, aryl, heteroaryl, heterocycloalkyl, arylalkyl, heteroarylalkyl, heterocycloalkylalkyl, alkenyl or alkynyl; each R14 is H, alkyl, alkenyl, alkynyl, halo, —CN, haloalkyl, cycloalkyl, cycloalkylalkyl, aryl, heteroaryl, heterocycloalkyl, arylalkyl, heteroarylalkyl, heterocycloalkylalkyl, —OR35, —N(R24)(R25) or —SR35; R41 is alkyl, cycloalkyl, —SO2(alkyl), —C(O)-alkyl, —C(O)-cycloalkyl or -alkyl-NH—C(O)CH3; and the remaining variables are as defined in the specification. Also disclosed are pharmaceutical compositions comprising the compounds of formula I and methods of treating cognitive or neurodegenerative diseases with compounds of formula I.Type: GrantFiled: August 4, 2004Date of Patent: October 6, 2009Assignee: Schering CorporationInventors: Jared N. Cumming, Ying Huang, Guoqing Li, Ulrich Iserloh, Andrew Stamford, Corey Strickland, Johannes H. Voigt, Yusheng Wu, Jianping Pan, Tao Guo, Douglas W. Hobbs, Thuy X. H. Le, Jeffrey F. Lowrie
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Patent number: 7592348Abstract: Disclosed are compounds of the formula I or a stereoisomer, tautomer, or pharmaceutically acceptable salt or solvate thereof, wherein W is a bond, —C(?S)—, —S(O)—, —S(O)2—, —C(?O)—, —O—, —C(R6)(R7)—, —N(R5)— or —C(?N(R5))—; X is —O—, —N(R5)— or —C(R6)(R7)—; provided that when X is —O—, U is not —O—, —S(O)—, —S(O)2—, —C(?O)— or —C(?NR5)—; U is a bond, —S(O)—, —S(O)2—, —C(O)—, —O—, —P(O)(OR15)—, —C(?NR5)—, —(C(R6)(R7))b— or —N(R5)—; wherein b is 1 or 2; provided that when W is —S(O)—, —S(O)2—, —O—, or —N(R5)—, U is not —S(O)—, —S(O)2—, —O—, or —N(R5)—; provided that when X is —N(R5)— and W is —S(O)—, —S(O)2—, —O—, or —N(R5)—, then U is not a bond; and R1, R2, R3, R4, R5, R6, and R7 are as defined in the specification; and pharmaceutical compositions comprising the compounds of formula I.Type: GrantFiled: December 13, 2004Date of Patent: September 22, 2009Assignee: Schering CorporationInventors: Zhaoning Zhu, Brian McKittrick, Zhong-Yue Sun, Yuanzan C. Ye, Johannes H. Voigt, Corey Strickland, Elizabeth M. Smith, Andrew Stamford, William J. Greenlee, Robert Mazzola, John Caldwell, Jared N. Cumming, Lingyan Wang, Yusheng Wu, Ulrich Iserloh, Tao Guo, Thuy X. H. Le, Kurt W. Saionz, Suresh D. Babu, Rachael C. Hunter
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Patent number: 7259142Abstract: A compound of formula: in which (i) aa1 is Adi and aa4 is Glu or (ii) each of aa1 and aa4 is Adi, L is sulfur, sulfoxide, oxygen or methylene, which compound (and its conjugates) bind to an SH2 domain in a protein comprising an SH2 domain, is non-phosphorylated, is redox-stable in vivo, is characterized by an IC50 in vivo of less than about 4.0 ?M with respect to the SH2 domain in Grb2, and, upon binding to the SH2 domain of Grb2, has a turn conformation. A conjugate comprising a compound as described above and a carrier agent, a composition comprising (i) a compound or a conjugate as described above and (ii) a carrier, a method of inhibiting binding of an SH2 domain in a protein comprising an SH2 domain to a target protein in an animal, wherein the SH2 domain is contacted with a target protein-binding inhibiting effective amount of a compound or a conjugate as described above, and a method of synthesizing such conjugates.Type: GrantFiled: September 13, 2005Date of Patent: August 21, 2007Assignee: The United States of America, represented by the Secretary, Department of Health and Human ServicesInventors: Peter P Roller, Ya-Qui Long, Feng-Di T. Lung, C. Richter King, Dajun Yang, Johannes H. Voigt
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Patent number: 6977241Abstract: Disclosed are compounds for SH2 domain binding inhibition. For example, disclosed is a compound of formula (I) wherein R1 is a lipophile; R2, in combination with the phenyl ring, forms a phenylphosphate mimic group or a protected phenylphosphate mimic group; R3 is hydrogen, azido, amino, carboxyalkyl, alkoxycarbonylalkyl, aminocarbonylalkyl, or alkylcarbonylamino, wherein the alkyl portion of R3 may be optionally substituted with a substituent selected from the group consisting of halo, hydroxy, carboxyl, amino, aminoalkyl, alkyl, alkoxy, and keto; R6 is a linker; AA is an amino acid; and n is 1 to 6; or a salt thereof. Also disclosed are a pharmaceutical composition, a method for inhibiting an SH2 domain from binding with a phosphoprotein and a method of treating breast cancer.Type: GrantFiled: August 22, 2001Date of Patent: December 20, 2005Assignee: The United States of America as represented by the Department of Health & Human ServicesInventors: Terrence R. Burke, Jr., Chang-Qing Wei, Johannes H. Voigt, Yang Gao
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Publication number: 20040048788Abstract: Disclosed are compounds for SH2 domain binding inhibition. For example, disclosed is a compound of formula (I) wherein R1 is a lipophile; R2, in combination with the phenyl ring, is a phenylphosphate mimic group or a protected phenylphosphate mimic group; R3 is hydrogen, azido, amino, carboxyalkyl, alkoxycarbonylalkyl, aminocarbonylalkyl, or alkylcarbonylamino, wherein the alkyl portion of R3 may be optionally substituted with a substituent selected from the group consisting of halo, hydroxy, carboxyl, amino, aminoalkyl, alkyl, alkoxy, and keto; R6 is a linker; AA is an amino acid; and n is 1 to 6; or a salt thereof. The compounds of the present invention have the advantage that their conformation is constrained to provide enhanced binding affinity with SH2 domain protein.Type: ApplicationFiled: February 21, 2003Publication date: March 11, 2004Inventors: Terrence R Burke, Chang-Qing Wei, Johannes H Voigt, Yang Gao