Patents by Inventor Dmitri A. Pissarnitski

Dmitri A. Pissarnitski 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: 20110236400
    Abstract: Disclosed are novel gamma secretase inhibitors of the formula. Also disclosed are methods of inhibiting gamma-secretase, methods of treating neurodegenerative diseases, and methods of treating Alzheimer's Disease. Also disclosed are processes for preparing alkenes in one reaction step using a mixture of an aldehyde (or ketone) and an alkyl substituted with two electron withdrawing groups, and reacting the mixture with: (a) a sulfonyl halide (e.g., a sulfonyl chloride) and a basic tertiary amine, or, (b) a sulfonyl anhydride and a basic amine, or (c) an aryl-C(O)-halide and a basic tertiary amine, or (d) an aryl-C(O)—O—C(O)-aryl and a basic tertiary amine, or (e) an heteroaryl-C(O)-halide and a basic tertiary amine, or (f) a heteroaryl-C(O)—O—C(O)-heteroaryl and a basic tertiary amine.
    Type: Application
    Filed: July 1, 2008
    Publication date: September 29, 2011
    Inventors: Wen-Lian Wu, Thomas A. Bara, Duane A. Burnett, John W. Clader, Martin S. Domalski, Yan Jin, Hubert B. Josien, Hongmei Li, Xian Liang, Dmitri A. Pissarnitski, Thavalakulamgara K. Sasikumar, Jesse K. Wong, Ruo Xu, Zhiqiang Zhao, Paul E. McNamara
  • Patent number: 7998958
    Abstract: Disclosed are novel gamma secretase inhibitors of the formula: Also disclosed are methods for inhibiting gamma secretase, for treating one or more neurodegenerative diseases, for inhibiting the deposition of beta amyloid protein, and for treating Alzheimer's disease using the compounds of formula (I).
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: August 16, 2011
    Assignee: Schering Corporation
    Inventors: Hubert B. Josien, John W. Clader, Thomas A. Bara, Ruo Xu, Hongmei Li, Dmitri A. Pissarnitski, Zhiqiang Zhao
  • Publication number: 20110027264
    Abstract: This invention provides novel compounds that are modulators of gamma secretase. The compounds have the formula: Also disclosed are methods of modulating gamma secretase activity and methods of treating Alzheimer's disease using the compounds of formula (I).
    Type: Application
    Filed: February 26, 2009
    Publication date: February 3, 2011
    Inventors: Xianhai Huang, Xianghai Huang, Anandan Palani, Robert G. Aslanian, Zhaoning Zhu, Dmitri A. Pissarnitski, Hongmei Li, William J. Greenlee, Zhiqiang Zhao, Robert D. Mazzola, JR., Jun Qin, Pawan Dhondi
  • Publication number: 20110015190
    Abstract: This invention provides novel compounds that are modulators of gamma secretase. The compounds have the formula (I) wherein R2 is a fused bicyclic ring of the formula (II). Also disclosed are methods of modulating gamma secretase activity and methods of treating Alzheimer's disease using the compounds of formula (I).
    Type: Application
    Filed: December 4, 2008
    Publication date: January 20, 2011
    Inventors: Xianhai Huang, Anandan Palani, Jun Qin, Robert Aslanian, Zhaoning Zhu, William Greenlee, Hubert Josien, Wei Zhou, Xiaohong Zhou, Chad E. Bennett, Dmitri Pissarnitski, Mihirbaran Mandal, Pawan Dhondi, Troy McCracken, Thomas Bara, Zhiqiang Zhao, Duane Burnett, John Clader
  • Publication number: 20100247514
    Abstract: 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: Application
    Filed: May 5, 2008
    Publication date: September 30, 2010
    Inventors: 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
  • Publication number: 20100093695
    Abstract: This invention discloses novel gamma secretase inhibitors of the formula: wherein: L is —O—, —N(R6)—, —S—, —S(O)—, or —S(O2)—; R1 is selected from the group consisting of aryl and heteroaryl; R2 is selected from the group consisting of alkyl, —C(O)—Y, —X—C(O)—Y, -alkylene-X—C(O)—Y, -alkylene-C(O)—Y, -alkylene-cycloalkylene-X—C(O)—Y, -alkylene-cycloalkylene-C(O)—Y, -cycloalkylene-alkylene-X—C(O)—Y, -cycloalkylene-alkylene-C(O)—Y, -cycloalkylene-X—C(O)—Y, -cycloalkylene-C(O)—Y, -alkylene-cycloalkylene-alkylene-X—C(O)—Y, -alkylene-cycloalkylene-alkylene-C(O)—Y, aryl, and heteroaryl; R3 is selected from the group consisting of aryl, heteroaryl, alkyl, cycloalkyl, arylalkyl, arylcycloalkyl, heteroarylalkyl, heteroarylcycloalkyl, arylheterocycloalkyl, and alkoxyalkyl; each R4 and R5 is independently selected from the group consisting of H and alkyl; and Y is selected from the group consisting of —NR8R9, —N(R6)—(CH2)b—NR8R9, aryl, heteroaryl, alkyl, cycloalkyl, arylalkyl, arylcycloalkyl, heteroarylalkyl, heter
    Type: Application
    Filed: December 8, 2009
    Publication date: April 15, 2010
    Inventors: Hubert B. Josien, John W. Clader, Thomas A. Bara, Ruo Xu, Hongmei Li, Dmitri A. Pissarnitski, Zhiqiang Zhao
  • Publication number: 20070197581
    Abstract: This invention discloses novel gamma secretase inhibitors of the formula: R2 and R3, or R2 and R4, or R3 and R4, together with the atoms to which they are bound, can form a fused cycloalkyl or fused heterocycloalkyl ring. The cycloalkyl ring or the heterocycloalkyl ring can be optionally substituted with one or more substitutents. One or more compounds of formula (I), or formulations comprising such compounds, may be useful, e.g. in treating Alzheimer's Disease.
    Type: Application
    Filed: January 18, 2007
    Publication date: August 23, 2007
    Inventors: Theodros Asberom, Thomas Bara, Chad Bennett, Duane Burnett, Mary Ann Caplen, John Clader, David Cole, Martin Domalski, Hubert Josien, Chad Knutson, Hongmei Li, Mark McBriar, Dmitri Pissarnitski, Li Qiang, Murali Rajagopalan, Thavalakulamgara Sasikumar, Jing Su, Haiqun Tang, Wen-Lian Wu, Ruo Xu, Zhiqiang Zhao
  • Patent number: 7208602
    Abstract: This invention discloses novel gamma secretase inhibitors of the formula: wherein: R1 is a substituted aryl or substituted heteroaryl group; R2 is an R1 group, alkyl, —X(CO)Y, or alkylene-X(CO)Y wherein X and Y are as defined herein; each R3 and each R3A are independently H, or alkyl; R11 is aryl, heteroaryl, alkyl, cycloalkyl, arylalkyl, arylcycloalkyl, heteroarylalkyl, heteroarylcycloalkyl, arylheterocycloalkyl, or alkoxyalkyl. Also disclosed is a method of treating Alzheimer's Disease using one or more compounds of the invention.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: April 24, 2007
    Assignees: Schering Corporation, Pharacopeia Drug Discovery, Inc.
    Inventors: Dmitri A. Pissarnitski, Hubert B. Josien, Elizabeth M. Smith, John W. Clader, Theodros Asberom, Tao Guo, Douglas W. Hobbs
  • Patent number: 7122675
    Abstract: Novel aryl and heteroaryl sulfonamides are disclosed. The sulfonamides, which are gamma secretase inhibitors, are represented by the formula: wherein Ar1 and Ar2 independently represent aryl or heteroaryl and Y represents a bond or a —(C(R3)2)1-3 group. Also disclosed is a method of inhibiting gamma secretase, and a method of treating Alzheimer's disease using the compounds of formula I.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: October 17, 2006
    Assignee: Schering Corporation
    Inventors: Hubert B. Josien, John W. Clader, Theodros Asberom, Dmitri A. Pissarnitski
  • Publication number: 20060100427
    Abstract: This invention discloses novel gamma secretase inhibitors of the formula: wherein: R1 is a substituted aryl or substituted heteroaryl group; R2 is an R1 group, alkyl, —X(CO)Y, or alkylene-X(CO)Y wherein X and Y are as defined herein; each R3 and each R3A are independently H, or alkyl; R11 is aryl, heteroaryl, alkyl, cycloalkyl, arylalkyl, arylcycloalkyl, heteroarylalkyl, heteroarylcycloalkyl, arylheterocycloalkyl, or alkoxyalkyl. Also disclosed is a method of treating Alzheimer's Disease using one or more compounds of the invention.
    Type: Application
    Filed: October 3, 2005
    Publication date: May 11, 2006
    Inventors: Dmitri Pissarnitski, Hubert Josien, Elizabeth Smith, John Clader, Theodros Asberom, Tao Guo, Douglas Hobbs
  • Publication number: 20060040936
    Abstract: This invention discloses novel gamma secretase inhibitors of the formula: wherein: L is —O—, —N(R6)—, —S—, —S(O)—, or —S(O2)—; R1 is selected from the group consisting of aryl and heteroaryl; R2 is selected from the group consisting of alkyl, —C(O)—Y, —X—C(O)—Y, -alkylene-X—C(O)—Y, -alkylene-C(O)—Y, -alkylene-cycloalkylene-X—C(O)—Y, -alkylene-cycloalkylene-C(O)—Y, -cycloalkylene-alkylene-X—C(O)—Y, -cycloalkylene-alkylene-C(O)—Y, -cycloalkylene-X—C(O)—Y, -cycloalkylene-C(O)—Y, -alkylene-cycloalkylene-alkylene-X—C(O)—Y, -alkylene-cycloalkylene-alkylene-C(O)—Y, aryl, and heteroaryl; R3 is selected from the group consisting of aryl, heteroaryl, alkyl, cycloalkyl, arylalkyl, arylcycloalkyl, heteroarylalkyl, heteroarylcycloalkyl, arylheterocycloalkyl, and alkoxyalkyl; each R4 and R5 is independently selected from the group consisting of H and alkyl; and Y is selected from the group consisting of —NR8R9, —N(R6)—(CH2)b—NR8R9, aryl, heteroaryl, alkyl, cycloalkyl, arylalkyl, arylcycloalkyl, heteroarylalkyl,
    Type: Application
    Filed: June 28, 2005
    Publication date: February 23, 2006
    Inventors: Hubert Josien, John Clader, Thomas Bara, Ruo Xu, Hongmei Li, Dmitri Pissarnitski, Zhiqiang Zhao
  • Publication number: 20060009467
    Abstract: Novel aryl and heteroaryl sulfonamides are disclosed. The sulfonamides, which are gamma secretase inhibitors, are represented by the formula: wherein Ar1 and Ar2 independently represent aryl or heteroaryl and Y represents a bond or a —(C(R3)2)1-3 group. Also disclosed is a method of inhibiting gamma secretase, and a method of treating Alzheimer's disease using the compounds of formula I.
    Type: Application
    Filed: September 9, 2005
    Publication date: January 12, 2006
    Inventors: Hubert Josien, John Clader, Theodros Asberom, Dmitri Pissarnitski
  • Publication number: 20060004004
    Abstract: Gamma-secretase inhibitors of the formula: are useful in treating various neurodegenerative diseases, wherein, for example: R1 includes unsubstituted or substituted aryl or heteroaryl groups; R2 includes —C(O)—Y, -alkylene-C(O)—Y, -alkylene-cycloalkylene-C(O)—Y, -cycloalkylene-alkylene-C(O)—Y, -alkylene-cycloalkylene-alkylene-C(O)—Y, -cycloalkylene-C(O)—Y, —S(O)—Y, -alkylene-S(O)—Y, -alkylene-cycloalkylene-S(O)—Y, -cycloalkylene-alkylene-S(O)—Y, -alkylene-cycloalkylene-alkylene-S(O)—Y, -cycloalkylene-S(O)—Y, —S(O2)—Y, -alkylene-S(O2)—Y, -alkylene-cycloalkylene-S(O2)—Y, -cycloalkylene-alkylene-S(O2)—Y, -alkylene-cycloalkylene-alkylene-S(O2)—Y, and -cycloalkylene-S(O2)—Y, wherein Y is as defined herein, and each of said alkylene or cycloalkylene may be unsubstituted or substituted as provided herein; each R3 is independently includes H, alkyl, —O-alkyl, —OH, —N(R9)2, acyl, and aroyl; or the moiety (R3)2, together with the ring carbon atom to which it is shown attached in formula I, defines a carbonyl
    Type: Application
    Filed: April 4, 2005
    Publication date: January 5, 2006
    Inventors: Theodros Asberom, John Clader, Hubert Josien, Mark McBriar, Dmitri Pissarnitski, Zhiqiang Zhao
  • Patent number: 6969719
    Abstract: A polycyclic guanine phosphodiesterase V inhibitor having the formula (I.1) or (II.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: November 29, 2005
    Assignee: Schering Corporation
    Inventors: Theodros Asberom, Yueqing Hu, Dmitri Pissarnitski, Ruo Xu, Yuguang Wang, Samuel Chackalamannil, John W. Clader, Andrew William Stamford
  • Patent number: 6943171
    Abstract: A compound having the formula (Ia) or (b), salt or solvate thereof, with the variables as defined herein, which can inhibit selectively phosphodiesterase V and can be useful for treating sexual dysfunction and other physiological disorders, symptoms and diseases:
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: September 13, 2005
    Assignee: Schering Corporation
    Inventors: Theodros Asberom, John W. Clader, Yueqing Hu, Dmitri A. Pissarnitski, Andrew W. Stamford, Ruo Xu
  • Publication number: 20050171129
    Abstract: A compound having the formula (Ia) or (b), salt or solvate thereof, with the variables as defined herein, which can inhibit selectively phosphodiesterase V and can be useful for treating sexual dysfunction and other physiological disorders, symptoms and diseases:
    Type: Application
    Filed: December 23, 2004
    Publication date: August 4, 2005
    Inventors: Theodros Asberom, John Clader, Yueqing Hu, Dmitri Pissarnitski, Andrew Stamford, Ruo Xu
  • Publication number: 20050085506
    Abstract: This invention discloses novel gamma secretase inhibitors of the formula: wherein: R1 is a substituted aryl or substituted heteroaryl group; R2 is an R1 group, alkyl, —XC(O)Y, alkylene-XC(O)Y, cycloalkylene-X—C(O)—Y, —CH—X—C(O)—NR3—Y or —CH—X—C(O)—Y, wherein X and Y are as defined herein; each R3 and each R3A are independently H, or alkyl; R11 is aryl, heteroaryl, alkyl, cycloalkyl, arylalkyl, arylcycloalkyl, heteroarylalkyl, heteroarylcycloalkyl, arylheterocycloalkyl, or alkoxyalkyl. Also disclosed is a method of treating Alzheimer's Disease using one or more compounds of the invention.
    Type: Application
    Filed: September 15, 2004
    Publication date: April 21, 2005
    Inventors: Dmitri Pissarnitski, Hubert Josien, Elizabeth Smith, John Clader, Theodros Asberom, Tao Guo, Douglas Hobbs
  • Publication number: 20040171614
    Abstract: This invention discloses novel gamma secretase inhibitors of the formula: 1
    Type: Application
    Filed: September 16, 2003
    Publication date: September 2, 2004
    Applicants: Schering-Plough Corporation, Pharmacopeia, Inc.
    Inventors: Dmitri A. Pissarnitski, Hubert B. Josien, Elizabeth M. Smith, John W. Clader, Theodros Asberom, Tao Guo, Douglas W. Hobbs
  • Publication number: 20040048848
    Abstract: This invention discloses novel gamma secretase inhibitors of the formula: 1
    Type: Application
    Filed: February 5, 2003
    Publication date: March 11, 2004
    Applicant: Schering-Plough Corporation and Pharmacopeia, Inc.
    Inventors: Dmitri A. Pissarnitski, Hubert B. Josien, Elizabeth M. Smith, John W. Clader, Theodros Asberom, Tao Guo, Douglas W. Hobbs
  • Patent number: 6683091
    Abstract: This invention discloses novel gamma secretase inhibitors of the formula: wherein: R1 is a substituted aryl or substituted heteroaryl group; R2 is an R1 group, alkyl, —X(CO)Y, —(CR32)1-4X(CO)Y; each R3A is independently H or alkyl; X is —O—, —NH, or —N-alkyl; and Y is —NR6R7, or —N(R3)(CH2)2-6NR6R7. Also disclosed is a method of treating Alzheimer's Disease.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: January 27, 2004
    Assignee: Schering Corporation
    Inventors: Theodoros Asberom, Henry S. Guzik, Hubert B. Josien, Dmitri A Pissarnitski