Patents Represented by Attorney H. Eric Fischer
  • Patent number: 8324213
    Abstract: In its many embodiments, the present invention provides a novel class of biaryi spiroaminooxazoline analogues as modulators of ?2C adrenergic receptor agonists, 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 conditions associated with the ?2C adrenergic receptors using such compounds or pharmaceutical compositions.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: December 4, 2012
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Kevin D. McCormick, Li Dong, Christopher W. Boyce, Manuel de Lera Ruiz, Salem Fevrier, Jie Wu, Junying Zheng, Youngong Yu, Jianhua Chao, Walter S. Won, Ashwin U. Rao, Rongze Kuang, Pauline C. Ting, Xianhai Huang, Ning Shao, Anandan Palani, Michael Y. Berlin, Robert G. Aslanian
  • Patent number: 8227623
    Abstract: The invention relates to a novel process for the preparation of asenapine, i.e. trans-5-chloro-2-methyl-2,3,3a,12b-tetrahydro-1H-dibenz[2,3:6,7]oxepino[4,5-c]pyrrole, as well as to novel intermediate products for use in said process.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: July 24, 2012
    Assignee: MSD Oss B.V.
    Inventors: Gerardus Johannes Kemperman, Timothy Lee Stuk, Jacobus Johannes Maria Van Der Linden
  • Patent number: 8222259
    Abstract: Compounds of the Formula I wherein R1 and R2 together with the carbon atoms to which they are bonded optionally form a further heteroaromatic ring of the formula (II) as well as pharmaceutically acceptable salts, solvates, esters and prodrugs thereof are adenosine A2a receptor antagonists and, therefore, are useful in the treatment of central nervous system diseases, in particular Parkinson's disease.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: July 17, 2012
    Assignee: Schering Corporation
    Inventors: Joel M. Harris, Bernard R. Neustadt, Jinsong Hao, Andrew W. Stamford
  • Patent number: 7803828
    Abstract: In its many embodiments, the present invention provides a novel class of indolines as inhibitors of ?2C adrenergic receptor agonists, 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 conditions associated with the ?2C adrenergic receptors using such compounds or pharmaceutical compositions.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: September 28, 2010
    Assignee: Schering-Plough Corporation
    Inventors: Kevin D. McCormick, Christopher W. Boyce, Robert G. Aslanian, Neng-Yang Shih, Salem Fevrier, Pietro Mangiaracina, Chia-Yu Huang, Bo Liang, Rong-Qiang Liu, Huagang Lu
  • Patent number: 7772276
    Abstract: This application discloses a novel process for the synthesis of himbacine analogs, as well as the compounds produced thereby. The synthesis proceeds by alternative routes including the cyclic ketal amide route, the chiral carbamate amide route, and the chiral carbamate ester route. The compounds produced thereby are useful as thrombin receptor antagonists.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: August 10, 2010
    Assignee: Schering Corporation
    Inventors: Tiruvettipuram K. Thiruvengadam, Anantha R. Sudhakar, Ngiap-Kie Lim, Daw-long Kwok, George G. Wu, Tao Wang, Mingsheng Huang, Michael D. Green
  • Patent number: 7750167
    Abstract: The invention relates to a novel process for the preparation of asenapine, i.e. trans-5-chloro-2-methyl-2,3,3a,12b-tetrahydro-1H-dibenz[2,3:6,7]oxepino[4,5-c]pyrrole, as well as to novel intermediate products for use in said process.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: July 6, 2010
    Assignee: N.V. Organon
    Inventors: Gerardus Johannes Kemperman, Timothy Lee Stuk, Jacobus Johannes Maria Van Der Linden
  • Patent number: 7745626
    Abstract: In an illustrative embodiment, the present invention describes the synthesis of the following compound and similar compounds, in high stereochemical purity by a novel stereoselective alkylation process:
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: June 29, 2010
    Assignee: Schering Corporation
    Inventors: Wenxue Wu, Hongbiao Liao, David J. Tsai, David R. Andrews, Dinesh Gala, Gary M. Lee, Martin Lawrence Schwartz, Timothy L. McAllister, Xiaoyong Fu, Donal Maloney, Tiruvettipuram K. Thiruvengadam, Chou-Hang Tann
  • Patent number: 7741358
    Abstract: The invention relates to an orthorhombic crystal form of compound trans-5-chloro-2,3,3a,12b-tetrahydro-2-methyl-1H-dibenz [2,3:6,7]oxepino[4,5-c]pyrrole (Z)-2-butenedioate, to methods for the preparation of this crystal form and to pharmaceutical compositions comprising an orthorhombic crystal form.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: June 22, 2010
    Assignee: N.V. Organon
    Inventor: Gerhardus Johannes Heeres
  • Patent number: 7737284
    Abstract: This invention relates to a novel process for the synthesis of Temozolomide, an antitumor compound, and analogs, and to intermediates useful in this novel process.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: June 15, 2010
    Assignee: Schering Plough Corp.
    Inventors: Shen-Chun Kuo, Janet L. Mas, Donald Chen-tung Hou
  • Patent number: 7728165
    Abstract: In one embodiment, the present application relates to a process of making a compound of formula I. and to certain intermediate compounds that are made within the process of making the compound of formula I.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: June 1, 2010
    Assignee: Schering Plough Corporation
    Inventors: Jeonghan Park, Anantha R Sudhakar, George S. K. Wong, Minzhang Chen, Juergen Weber, Xiaojing Yang, Daw-long Kwok, Ingyu Jeon, Ramani R Raghavan, Maria Tamarez, Weidong Tong, Eugene J. Vater
  • Patent number: 7723531
    Abstract: The present invention provides for a process for preparing racemic methyl 6,6-dimethyl-3-azabicyclo[3,1,0]hexane-2-carboxylate, its corresponding salt: (2S, 3R, 4S)-methyl 6,6-dimethyl-3-azabicyclo[3,1,0]hexane-2-carboxylate di-p-toluoyl-D-tartaric acid (“D-DTTA”) salt or a (2R, 3S, 4R)-methyl 6,6-dimethyl-3-azabicyclo[3,1,0]hexane-2-carboxylate di-p-toluoyl-L-tartaric acid salt (“L-DTTA”) in a high enantiomeric excess. This invention also provides for a process for preparing a (2S, 3R, 4S)-methyl 6,6-dimethyl-3-azabicyclo[3,1,0]hexane-2-carboxylate dibenzoyl-D-tartaric acid (“D-DBTA”) salt or a (2R, 3S, 4R)-methyl 6,6-dimethyl-3-azabicyclo[3,1,0]hexane-2-carboxylate L-tartaric acid (“L-DBTA”) salt in a high enantiomeric excess. Further, this invention provides a process for preparing intermediates II, IIB, III, IV, IV salt, V, VI, and VII.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: May 25, 2010
    Assignee: Schering Corporation
    Inventors: George Wu, Frank X. Chen, Paitoon Rashatasakhon, Jeffrey M. Eckert, George S. K. Wong, Hong-Chang Lee, Nolan C. Erickson, Jennifer Ann Vance, Peter C. Nirchio, Juergen Weber, David Jieh-Shyh Tsai, Nanfei Zou
  • Patent number: 7192962
    Abstract: Crystalline polymorphs of 1-ethyl-3,7-dihydro-8-[(1R,2R) -(hydroxycyclopentyl)amino]-3-(2-hydroxyethyl)-7-[(3-bromo-4-methoxyphenyl)methyl]-1H-Purine-2,6-dione in Form 1 and Form 2, which exhibit x-ray powder diffraction profiles substantially the same as those shown in FIGS. 5 and 6, respectively, and which exhibit differential scanning calorimtery profiles substantially the same as those shown in FIGS. 2 and 4, respectively, and are represented by the formula: Pharmaceutical compositions comprising the polymorph Form 1 or 2 of Compound 13 and at least one excipient or carrier, and methods of using the polymorph Form 1 or 2 of Compound 13 to treat a variety of physiological disorders, such as erectile dysfunction.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: March 20, 2007
    Assignee: Schering Corporation
    Inventors: Vilas H. Dahanukar, Hoa N. Nguyen, Cecilia A. Orr, Funcheng Zhang, Ilia A. Zavialov, Kevin Klopfer, Jeffrey M. Skell, Albert W. Buchholz, Jr., Craig D. Boyle
  • Patent number: 7161024
    Abstract: In its several embodiments, this invention discloses a novel process to prepare the compounds of Formula 3: wherein R1 is lower alkyl, and R2 and R3 can be the same or different, each being independently selected from the group consisting of alkyl, aryl and aralkyl; said process being carried out in a suitable solvent with at least one tert-amine carboxylate salt catalyst. The compounds of formula 3 are chemical intermediates useful for the synthesis of various heterocyclic compounds. These heterocyclic compounds are in turn useful precursors for diverse pharmaceutical, herbicidal and insecticidal agents. In particular, these intermediates are useful precursors to a variety of CCR5 inhibitors.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: January 9, 2007
    Assignee: Schering Corporation
    Inventor: Richard W. Draper
  • Patent number: 7129357
    Abstract: In one embodiment, the present application discloses a process for making the compound of the formula:
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: October 31, 2006
    Assignee: Schering Corporation
    Inventors: David R. Andrews, Suhan Tang, Wenxue Wu, Sami Y. Kalliney, Anantha Sudhakar, Christopher Nielsen
  • Patent number: 7074923
    Abstract: A process for preparing xanthine phosphodiesterase V inhibitors, and compounds utilized in said process.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: July 11, 2006
    Assignee: Schering Corporation
    Inventors: Vilas A. Dahanukar, Hoa N. Nguyen, Cecilia A. Orr, Fucheng Zhang, Ilia A. Zavialov