Patents by Inventor George S. K. Wong

George S. K. Wong 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: 20120289709
    Abstract: The present disclosure provides substantially enantiomerically pure heterobicyclic compounds of the following structural formulas, wherein A, M, M?, and R5 are as described herein, and to biocatalytic processes for their preparation, and to the enzymes used in those processes.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 15, 2012
    Applicant: CODEXIS, INC.
    Inventors: James Lalonde, Tao Li, Jack Liang, Benjamin Mijts, Roger Sheldon, George S.K. Wong, Aleksey Zaks
  • Patent number: 8222427
    Abstract: This disclosure relates to novel processes useful in the purification of keto-amide, ketone and aldehyde compounds, which are useful as inhibitors of the hepatitis C virus (HCV) NS3 protease and have application in the treatment of conditions caused by HCV. The processes of this disclosure relate to purification via a bisulfite adduct. In particular, this disclosure relates to processes useful in the purification of the keto-amide compound of Formula I, (1R,5S)-N-[3-amino-1-(cyclobutylmethyl)-2,3-dioxopropyl]-3-[2(S)-[[[(1,1-dimethylethyl)amino]carbonyl]-amino]-3,3-dimethyl-1-oxobutyl]-6,6-dimethyl-3-azabicyclo[3.1.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: July 17, 2012
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: George S. K. Wong, Jeonghan Park, Tetsuo Iwama, Anantha R. Sudhakar
  • Patent number: 8198463
    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: (1R,2S,5S)-methyl 6,6-dimethyl-3-azabicyclo[3,1,0]hexane-2-carboxylate di-p-toluoyl-D-tartaric acid (“D-DTTA”) salt or a (1S,2R,5R)-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 (1R,2S,5S)-methyl 6,6-dimethyl-3-azabicyclo[3,1,0]hexane-2-carboxylate dibenzoyl-D-tartaric acid (“D-DBTA”) salt or a (1S,2R,5R)-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: April 9, 2010
    Date of Patent: June 12, 2012
    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: 8163937
    Abstract: The present invention relates also to a process for the preparation of intermediate compounds useful in preparing the compounds of Formula (I) using the process of Scheme (II).
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: April 24, 2012
    Assignee: Schering Corporation
    Inventors: George S. K. Wong, Hong-Chang Lee, Jennifer A. Vance, Weidong Tong, Tetsuo Iwama
  • Publication number: 20100256393
    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: (1R, 2S, 5S)-methyl 6,6-dimethyl-3-azabicyclo[3,1,0]hexane-2-carboxylate di-p-toluoyl-D-tartaric acid (“D-DTTA”) salt or a (1S, 2R, 5R)-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 (1R, 2S, 5S)-methyl 6,6-dimethyl-3-azabicyclo[3,1,0]hexane-2-carboxylate dibenzoyl-D-tartaric acid (“D-DBTA”) salt or a (1S, 2R, 5R)-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: Application
    Filed: April 9, 2010
    Publication date: October 7, 2010
    Applicant: 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
  • Publication number: 20100145013
    Abstract: The present invention relates also to a process for the preparation of intermediate compounds useful in preparing the compounds of Formula (I) using the process of Scheme (II).
    Type: Application
    Filed: December 18, 2007
    Publication date: June 10, 2010
    Applicant: Schering Corporation
    Inventors: George S. K. Wong, Hong-Chang Lee, Jennifer A. Vance, Weidong Tong, Tetsuo Iwama
  • 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
  • Publication number: 20100113821
    Abstract: Disclosed is a process for preparing 3-(amino)-3-cyclobutylmethyl-2-hydroxy-propionamide hydrochloride, an intermediate useful in the preparation of the HCV protease inhibitor (1R,5S)—N-[3-amino-1-(cyclobutylmethyl)-2,3-dioxopropyl]-3-[2(S)-[[[(1,1-dimethylethyl)amino]carbonyl]amino]-3,3-dimethyl-1-oxobutyl]-6,6-dimethyl-3-azabicyclo[3.1.0]hexan-2(S)-carboxamide.
    Type: Application
    Filed: December 17, 2007
    Publication date: May 6, 2010
    Applicant: Schering-Plough Corporation
    Inventors: Jeonghan Park, Eugene J. Vater, Shuan Dong, Tetsuo Iwama, Ramani R. Raghavan, Hong-Chang Lee, George S.k. Wong
  • Publication number: 20090326244
    Abstract: A process for purifying the alpha-keto amide is (1R,5S)—N-[3-amino-1-(cyclobutylmethyl)-2,3-dioxopropyl]-3-[2(S)-[[[(1,1-dimethylethyl)amino]carbonyl]-amino]-3,3-dimethyl-1-oxobutyl]-6,6-dimethyl-3-azabicyclo[3.1.0]hexan-2(S)-carboxamide via a bisulfite adduct is disclosed.
    Type: Application
    Filed: December 13, 2007
    Publication date: December 31, 2009
    Inventors: George S. K. Wong, Jeonghan Park, Tetsuo Iwama, Anantha R. Sudhakar
  • Publication number: 20090240063
    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: Application
    Filed: December 20, 2006
    Publication date: September 24, 2009
    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: 7569705
    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: November 6, 2007
    Date of Patent: August 4, 2009
    Assignee: Schering 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: 7524963
    Abstract: In one embodiment, the present invention describes the synthesis of (4-bromophenyl) (4-piperidyl)methanone-(Z)-O-ethyloxime and its acid salts, and similar compounds, in high stereochemical purity.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: April 28, 2009
    Assignee: Schering Corporation
    Inventors: George S. K. Wong, Jeonghan Park, Weidong Tong, Ramani R. Raghavan
  • Patent number: 6914142
    Abstract: In one embodiment, the present invention describes the synthesis of (4-bromophenyl) (4-piperidyl)methanone-(Z)—O-ethyloxime and its acid salts, and similar compounds, in high stereochemical purity.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: July 5, 2005
    Assignee: Schering Corporation
    Inventors: George S. K. Wong, Jeonghan Park, Weidong Tong, Ramani Raghavan
  • Patent number: 6818773
    Abstract: In one embodiment, the present invention describes the synthesis of 4-[(Z)-(4-bromophenyl)(ethoxyimino)methyl]-1′-[(2,4-dimethyl-1-oxido-3-pyridinyl)carbonyl]-4′-methyl-1,4′-bipiperidine, and intermediates therefor from easily available starting materials by a simple route.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: November 16, 2004
    Assignee: Schering Corporation
    Inventors: Minzhang Chen, Bosco Anthony D'Sa, William W. Leong, Tong Gan, George S. K. Wong, Suhan Tang, Christopher Michael Nielsen
  • Publication number: 20030105131
    Abstract: In one embodiment, the present invention describes the synthesis of 4-[(Z)-(4-bromophenyl)(ethoxyimino)methyl]-1′-[(2,4-dimethyl-1-oxido-3-pyridinyl)carbonyl]-4′-methyl-1,4′-bipiperidine, and intermediates therefor from easily available starting materials by a simple route.
    Type: Application
    Filed: October 11, 2002
    Publication date: June 5, 2003
    Applicant: SCHERING CORPORATION
    Inventors: Minzhang Chen, Bosco Anthony D'Sa, William W. Leong, Tong Gan, George S.K. Wong, Suhan Tang, Christopher Michael Nielsen
  • Publication number: 20030092731
    Abstract: In one embodiment, the present invention describes the synthesis of (4-bromophenyl) (4-piperidyl)methanone-(Z)-O-ethyloxime and its acid salts, and similar compounds, in high stereochemical purity.
    Type: Application
    Filed: October 11, 2002
    Publication date: May 15, 2003
    Applicant: SCHERING CORPORATION
    Inventors: George S.K. Wong, Jeonghan Park, Weidong Tong, Ramani R. Raghavan
  • Patent number: 6344580
    Abstract: There is provided a process for the prepartion of 2,2-dimethyl-5-(4-chlorobenzyl)cyclopentanone. a key intermediate in the production of the antifungal agent metconazole.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: February 5, 2002
    Assignee: BASF Aktiengesellschaft
    Inventor: George S. K. Wong
  • Publication number: 20020013489
    Abstract: There is provided a process for the prepartion of 2,2-dimethyl-5-(4-chlorobenzyl)cyclopentanone 1
    Type: Application
    Filed: June 8, 2001
    Publication date: January 31, 2002
    Inventor: George S. K. Wong
  • Patent number: 6075199
    Abstract: A method and apparatus for generating electrical power using animal body heat as the sole energy source. The apparatus includes a plurality of thermocouples connected in series and thermal insulating material for retaining heat in the hot junction and thermal conducting material for conducting heat away from the cold junction whereby a temperature differential between the hot and cold junctions of the thermocouples is maintained body heat energy received by the hot junction is converted to electrical power. The apparatus can be used to replace or supplement the electrical power provided by a low-voltage battery to drive a microelectronic device.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: June 13, 2000
    Assignee: National Research Council of Canada
    Inventor: George S. K. Wong