Patents by Inventor Oswy Z. Pereira

Oswy Z. Pereira 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).

  • Compounds and methods for the treatment or prevention of Flavivirus infections
    Patent number: 6887877
    Abstract: The present invention provides novel compounds represented by formula I: or pharmaceutically acceptable salts thereof useful for treating Flaviviridae viral infection.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: May 3, 2005
    Assignee: ViroChem Pharma Inc.
    Inventors: Laval Chan Chun Kong, Jean Bedard, Sanjoy Kumar Das, Nghe Nguyen Ba, Oswy Z. Pereira, Stephen Joseph Shuttleworth, Mohammad Arshad Siddiqui, Wuyi Wang
  • Compounds and methods for the treatment or prevention of Flavivirus infections
    Patent number: 6881741
    Abstract: The present invention provides novel compounds represented by formula I: or pharmaceutically acceptable salts thereof useful for treating flaviviridae viral infection.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: April 19, 2005
    Assignee: ViroChem Pharma Inc.
    Inventors: Laval Chan Chun Kong, Jean Bedard, Sanjoy Kumar Das, Nghe Nguyen Ba, Oswy Z. Pereira, Thumkunta Jagadeeswar Reddy, Mohammad Arshad Siddiqui, Wuyi Wang, Constanin Yannopoulos
  • Compounds and methods for the treatment or prevention of Flavivirus infections
    Publication number: 20040192707
    Abstract: Compounds represented by formula I: 1
    Type: Application
    Filed: December 9, 2003
    Publication date: September 30, 2004
    Inventors: Laval Chan Chun Kong, Oswy Z. Pereira, Nghe Nguyen-Ba, Ming-Qiang Zhang, Sanjoy Kumar Das, Carl Poisson, Thumkunta Jagadeeswar Reddy, Liliane Halab
  • COMPOUNDS AND METHODS FOR THE TREATMENT OR PREVENTION OF FLAVIVIRUS INFECTIONS
    Publication number: 20040116509
    Abstract: The present invention provides novel compounds represented by formula I: 1
    Type: Application
    Filed: June 11, 2002
    Publication date: June 17, 2004
    Applicant: Shire BioChem Inc.
    Inventors: Laval Chan Chun Kong, Jean Bedard, Sanjoy Kumar, Nghe Nguyen Ba, Oswy Z. Pereira, Thumkunta Jagadeeswar Reddy, Mohammad Arshad Siddiqui, Wuyi Wang, Constantin Yannopoulos
  • Compounds and methods for the treatment or prevention of flavivirus infections
    Publication number: 20030229053
    Abstract: the present invention provides novel compounds represented by formula I: 1
    Type: Application
    Filed: June 11, 2002
    Publication date: December 11, 2003
    Applicant: Shire BioChem Inc.
    Inventors: Laval Chan Chun Kong, Jean Bedard, Sanjoy Kumar Das, Nghe Nguyen Ba, Oswy Z. Pereira, Stephen Joseph Shuttleworth, Mohammad Arshad Siddiqui, Wuyi Wang
  • Compounds and methods for the treatment of prevention of flavivirus infections
    Publication number: 20030199503
    Abstract: The present invention provides novel compounds represented by formula I: 1
    Type: Application
    Filed: December 20, 2002
    Publication date: October 23, 2003
    Applicant: Shire BioChem Inc.
    Inventors: Laval Chan Chun Kong, Oswy Z. Pereira, Nghe Nguyen-Ba, Thumkunta Jagadeeswar Reddy, Sanjoy Kumar Das, Mohammad Arshad Siddiqui
  • Macrolide compounds
    Patent number: 5057536
    Abstract: Compounds of formula (1) ##STR1## and salts thereof, wherein R.sup.1 represents a methyl, ethyl or isopropyl group;Y.sup.1 is --CH.sub.2 --, Y.sup.2 is --CH-- and X represents ##STR2## where R.sup.2 represents a hydrogen atom or a group OR.sup.8 (where OR.sup.8 is a hydroxyl group or a substituted hydroxyl group having up to 25 carbon atoms) and R.sup.3 represents a hydrogen atom, or R.sup.2 and R.sup.3 together with the carbon atom to which they are attached represent >C.dbd.O, >C.dbd.CH.sub.2 or >C.dbd.NOR.sup.9 (where R.sup.9 represents a hydrogen atom, a C.sub.1-8 alkyl group or a C.sub.3-8 alkenyl group) and the group >C.dbd.NOR.sup.9 is in the E configuration] or --Y.sup.1 --X--Y.sup.2 -- represents --CH.dbd.CH--CH-- or --CH.sub.2 --CH.dbd.C--;R.sup.4 represents a group OR.sup.8 as defined above and R.sup.5 represents a hydrogen atom, or R.sup.4 and R.sup.5 together with the carbon atom to which they are attached represent >C.dbd.O or >C.dbd.NOR.sup.9a (where R.sup.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: October 15, 1991
    Assignee: American Cyanamid Company
    Inventors: Michael J. Dawson, David Noble, Gordon C. Lawrence, Richard A. Fletton, Stephen J. Lane, Michael V. J. Ramsay, Oswy Z. Pereira, Derek R. Sutherland, Edward P. Tiley
  • Process for the preparation of macrolide compounds
    Patent number: 5023348
    Abstract: A process for preparing a compound of formula (I) ##STR1## (where (i) R.sup.1 is an ethoxy group and R.sup.2 is a hydrogen atom, (ii) R.sup.1 is a hydrogen atom and R.sup.2 is a bromine atom or (iii) (R.sup.1 and R.sup.2 together with the carbon atom to which they are attached represent>C.dbd.O) which comprises stereoselectively reducing the corresponding 5-keto compound.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: June 11, 1991
    Assignee: American Cyanamid Company
    Inventors: Oswy Z. Pereira, Michael V. J. Ramsay, Stephen Freeman
  • Macrolide compounds
    Patent number: 4918098
    Abstract: Compounds are described of formula (I) ##STR1## and salts thereof, wherein R.sup.1 a methyl, ethyl or isopropyl group;R.sup.2 is --H, --OH, substituted --OH or a phosphate ester group and R.sup.3 is --H, or R.sup.2 and R.sup.3 together with the carbon atom to which they are attached represent a >C=0 groupand OR.sup.4 is a group OR.sup.5 as defined above;with the proviso that either R.sup.2 represents a group OR.sup.5 (where OR.sup.5 is an alkoxy group OR.sup.7 in which R.sup.7 represents a C.sub.1-6 alkyl substituted by a halogen atom or C.sub.2-6 alkyl interrupted by --O-- or --S--) or at least one of R.sup.2 and OR.sup.4 is a phosphate ester group or a group OCONR.sup.10 R.sup.11 (where R.sup.10 and R.sup.11 are --H or C.sub.1-4 alkyl).These compounds may be used for controlling insect, acarine, nematode or other pests.
    Type: Grant
    Filed: March 11, 1987
    Date of Patent: April 17, 1990
    Assignee: American Cyanamid Company
    Inventors: Michael V. J. Ramsay, Edward P. Tiley, Oswy Z. Pereira, John B. Ward, Neil Porter, Hazel M. Noble, Richard A. Fletton, David Noble, Derek R. Sutherland
  • Macrolide compounds
    Patent number: 4900753
    Abstract: Compounds are described of formula (I) ##STR1## and salts thereof, wherein R.sup.1 represents a methyl, ethyl or isopropyl group;R.sup.2 represents a hydrogen atom, a C.sub.1-8 alkyl group or a C.sub.3-8 alkenyl group and the group .dbd.NOR.sup.2 is in the E-configuration;OR.sup.3 is a hydroxyl group or a substituted hydroxyl group having up to 25 carbon atoms.These compounds may be used for controlling insect, acarine, nematode or other pests.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: February 13, 1990
    Assignee: American Cyanamid Company
    Inventors: Derek R. Sutherland, Michael V. J. Ramsay, Edward P. Tiley, Oswy Z. Pereira, John B. Ward, Neil Porter, Hazel M. Noble, Richard A. Fletton, David Noble